Home » Archimedes archive » Acorn User » AU 1997-07 A.adf » Features » 3D/!AU_Attack/source/h/our_lib

3D/!AU_Attack/source/h/our_lib

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Tape/disk: Home » Archimedes archive » Acorn User » AU 1997-07 A.adf » Features
Filename: 3D/!AU_Attack/source/h/our_lib
Read OK:
File size: 434E bytes
Load address: 0000
Exec address: 0000
File contents
/*
   our_lib.h : Written by Greg Scott   1997
   for Acorn User, as part of the "Virtual
   Worlds" series.

   Usage of the source code is done at the
   owners risk, and Acorn User or the auth
   or hold no responsibility for damages.

   This has been written with EasyC/C++, hence
   the #pragma commands. A little cutting/pasting
   should be adequate for other compilers. Otherwise
   just run the executable!
*/

#include <stdio.h>

/* Assembler Functions (SWIs, etc) */
#pragma asm
EXPORT ourlib_gettime
.ourlib_gettime

STMFD R13!,{R1-R4,R14}
SWI OS_ReadMonotonicTime
LDMFD R13!,{R1-R4,R15}



EXPORT ourlib_keydown
.ourlib_keydown
STMFD R13!,{R1-R2,R14}

EOR R1,R0,#128
MOV R0,#121
SWI OS_Byte
MOV R0,R1
LDMFD R13!,{R1-R2,PC}



EXPORT ourlib_sliver_mask
.ourlib_sliver_mask
STMFD R13!,{R1-R9,R14}
LDMIA R0,{R0-R4}
/*
.noclippingz
ADD R1,R1,R6,LSL #12 ; calculate offset in walls[][] array
ADD R1,R1,R2         ; add the column to this
*/
CMP R3,R2
MOVGE R3,R2

MOV R8,#128
SUB R8,R8,R3,LSR #1 ; set start y pos
ADD R4,R4,R8,LSL #8 ; work out usual screen (320x256)
ADD R4,R4,R8,LSL #6 ; offset to begin loop
ADD R0,R0,R4

MOV R8,#64        ; start loop counter
MOV R7,R8

CMP R3,#64
BLLE loopy64looz
CMP R3,#127
BLLE loopy127looz
CMP R3,#191
BLLE loopy191looz
BL loopy192looz
.loopy64looz
.doddle64z
CMP R7,#64
BLLT done64looz
LDRB R9,[R1]       ; if so load in pixel value
SUB R7,R7,#64
CMP R9,#0
/*BEQ skip1*/
STRNEB R9,[R0]
.skip1
ADD R0,R0,#320

.done64looz
ADD R1,R1,#64
ADD R7,R7,R3         ; add scale onto vert. error term
SUBS R8,R8,#1
BLNE loopy64looz         ; loop if so

LDMFD R13!,{R1-R9,R15}^

.loopy127looz
.doddle127z
CMP R7,#64
LDRB R9,[R1]       ; if so load in pixel value
SUB R7,R7,#64
CMP R9,#0
/*BEQ skip2*/
STRNEB R9,[R0]
.skip2
ADD R0,R0,#320

CMP R7,#64
BLLT done127looz
LDRB R9,[R1]       ; if so load in pixel value
SUB R7,R7,#64
CMP R9,#0
/*BEQ skip3*/
STRNEB R9,[R0]
.skip3
ADD R0,R0,#320

.done127looz
ADD R1,R1,#64
ADD R7,R7,R3         ; add scale onto vert. error term
SUBS R8,R8,#1
BLNE loopy127looz         ; loop if so
LDMFD R13!,{R1-R9,R15}^


.loopy191looz
.doddle191z
CMP R7,#64
LDRB R9,[R1]       ; if so load in pixel value
SUB R7,R7,#64
CMP R9,#0
/*BEQ skip4*/
STRNEB R9,[R0]
.skip4
ADD R0,R0,#320

CMP R7,#64
LDRB R9,[R1]       ; if so load in pixel value
SUB R7,R7,#64
CMP R9,#0
/*BEQ skip5*/
STRNEB R9,[R0]
.skip5
ADD R0,R0,#320

CMP R7,#64
BLT done191looz
LDRB R9,[R1]       ; if so load in pixel value
SUB R7,R7,#64
CMP R9,#0
/*BEQ skip6*/
STRNEB R9,[R0]
.skip6
ADD R0,R0,#320

.done191looz
ADD R1,R1,#64
ADD R7,R7,R3         ; add scale onto vert. error term
SUBS R8,R8,#1
BLNE loopy191looz         ; loop if so
LDMFD R13!,{R1-R9,R15}^

.loopy192looz
.doddle192z
CMP R7,#64
LDRB R9,[R1]       ; if so load in pixel value
SUB R7,R7,#64
CMP R9,#0
/*BEQ skip7*/
STRNEB R9,[R0]
.skip7
ADD R0,R0,#320

CMP R7,#64
LDRB R9,[R1]       ; if so load in pixel value
SUB R7,R7,#64
CMP R9,#0
BEQ skip8
STRB R9,[R0]
.skip8
ADD R0,R0,#320

CMP R7,#64
LDRB R9,[R1]       ; if so load in pixel value
SUB R7,R7,#64
CMP R9,#0
/*BEQ skip9*/
STRNEB R9,[R0]
.skip9
ADD R0,R0,#320

CMP R7,#64
BLLT done192looz
LDRB R9,[R1]       ; if so load in pixel value
SUB R7,R7,#64
CMP R9,#0
/*BEQ skip10*/
STRNEB R9,[R0]
.skip10
ADD R0,R0,#320

.done192looz
ADD R1,R1,#64
ADD R7,R7,R3         ; add scale onto vert. error term
SUBS R8,R8,#1
BLNE loopy192looz         ; loop if so
.endoffunctionz
LDMFD R13!,{R1-R9,R15}^

EXPORT ourlib_bar_plot
.ourlib_bar_plot
STMFD R13!,{R1-R4,R14}
; R0 = screen R1 = bar R2 = startoffset
MOV R3,#250

ADD R0,R0,R2
.bar_loop

LDR R2,[R1],#4
STR R2,[R0],#4
LDR R2,[R1],#4
STR R2,[R0],#4
LDR R2,[R1],#4
STR R2,[R0],#4
LDR R2,[R1],#4
STR R2,[R0],#4
LDR R2,[R1],#4
STR R2,[R0],#4
LDR R2,[R1],#4
STR R2,[R0],#4
LDR R2,[R1],#4
STR R2,[R0],#4
LDR R2,[R1],#4
STR R2,[R0],#4
LDR R2,[R1],#4
STR R2,[R0],#4
LDR R2,[R1],#4
STR R2,[R0],#4
LDR R2,[R1],#4
STR R2,[R0],#4
LDR R2,[R1],#4
STR R2,[R0],#4
LDR R2,[R1],#4
STR R2,[R0],#4
LDR R2,[R1],#4
STR R2,[R0],#4
LDR R2,[R1],#4
STR R2,[R0],#4
LDR R2,[R1],#4
STR R2,[R0],#4SUBS R3,R3,#1
BNE bar_loop

LDMFD R13!,{R1-R4,R15}^

EXPORT ourlib_gun_plot
.ourlib_gun_plot

STMFD R13!,{R1-R12,R14}

/* R0 = video R1 =graphic R2 = width R3 =height */
MOV R5,R0

.yg_loop
MOV R4,R2
ADD R0,R0,#320
MOV R5,R0
.xg_loop
LDRB R6,[R1],#1
CMP R6,#151
BEQ cont
STRB R6,[R5]
.cont
ADD R5,R5,#1


SUBS R4,R4,#1
BNE xg_loop
SUBS R3,R3,#1
BNE yg_loop

LDMFD R13!,{R1-R12,R15}


EXPORT ourlib_changemode
.ourlib_changemode
STMFD R13!,{R1-R4,R14}
MOV R1,R0
MOV R0,#22
SWI OS_WriteC
MOV R0,R1
SWI OS_WriteC

LDMFD R13!,{R1-R4,R15}

EXPORT ourlib_wait
.ourlib_wait
STMFD R13!,{R1-R5,R14}
MOV R3,R0 /* Copy variable into safe place */
SWI OS_ReadMonotonicTime
ADD R2,R0,R3
.time_loop
SWI OS_ReadMonotonicTime
CMP R0,R2
BLE time_loop
LDMFD R13!,{R1-R5,R15}^

EXPORT ourlib_closedown_screens
.ourlib_closedown_screens
STMFD R13!,{R1-R4,R14}
MOV R0,#114
MOV R1,#1
SWI "OS_Byte"
LDMFD R13!,{R1-R4,R15}^






.simplenumber
EQUD 0

EXPORT ourlib_simpleswitch
.ourlib_simpleswitch
STMFD R13!,{R1-R5,R14}
LDR R1,simplenumber
MOV R0,#113
MOV R4,R1
SWI "OS_Byte"
MVN R1,R4
STR R1,simplenumber
MOV R0,#112
SWI "OS_Byte"
LDMFD R13!,{R1-R5,R15}^




EXPORT ourlib_setup_screens
.ourlib_setup_screens

STMFD R13!,{R1-R4,R14}
MOV R0,#114
MOV R1,#0
SWI "OS_Byte"

LDMFD R13!,{R1-R4,R15}^

EXPORT ourlib_killcursor
.ourlib_killcursor
STMFD R13!,{R1-R4,R14}
SWI "OS_RemoveCursors"
LDMFD R13!,{R1-R4,R15}^

EXPORT ourlib_revivecursor
.ourlib_revivecursor
STMFD R13!,{R1-R4,R14}
SWI "OS_RestoreCursors"
LDMFD R13!,{R1-R4,R15}^



EXPORT ourlib_sliver_two
.ourlib_sliver_two
STMFD R13!,{R1-R12,R14}
LDMIA R0,{R0-R6}

CMP R3,#255
MOVGE R3,#255
ADD R1,R1,R6,LSL #2
ADD R1,R1,R2
MOV R8,#128
SUB R8,R8,R3,LSR #1
ADD R4,R4,R8,LSL #8
ADD R4,R4,R8,LSL #6
ADD R0,R0,R4
MOV R10,#0
MOV R8,R3
MOV R3,R1
.looop
LDRB R9,[R1,R10,LSL #6]       ; if so load in pixel value
STRB R9,[R0],#320
ADD R10,R10,R5
MOV R10,R10,LSR #8
SUBS R8,R8,#1
BNE looop

 LDMFD R13!,{R0-R12,R15}^

EXPORT ourlib_sliver
.ourlib_sliver
STMFD R13!,{R1-R12,R14}
LDMIA R0,{R0-R4}

CMP R3,R2
MOVGE R3,R2

/*.noclipping
ADD R1,R1,R6,LSL #12 ; calculate offset in walls[][] array
ADD R1,R1,R2         ; add the column to this
*/

MOV R8,#128
SUB R8,R8,R3,LSR #1 ; set start y pos
ADD R4,R4,R8,LSL #8 ; work out usual screen (320x256)
ADD R4,R4,R8,LSL #6 ; offset to begin loop
ADD R0,R0,R4

MOV R8,#64        ; start loop counter
MOV R7,R8

CMP R3,#64
BLLE loopy64loo
CMP R3,#127
BLLE loopy127loo
CMP R3,#191
BLLE loopy191loo
BL loopy192loo
.loopy64loo
.doddle64
CMP R7,#64
BLLT done64loo
LDRB R9,[R1]       ; if so load in pixel value
STRB R9,[R0],#320
SUB R7,R7,#64
.done64loo
ADD R1,R1,#64
ADD R7,R7,R3         ; add scale onto vert. error term
SUBS R8,R8,#1
BLNE loopy64loo         ; loop if so

LDMFD R13!,{R1-R12,R15}^
/*MOVS PC,R14*/


.loopy127loo
.doddle127
CMP R7,#64
LDRB R9,[R1]       ; if so load in pixel value
STRB R9,[R0],#320
SUB R7,R7,#64
CMP R7,#64
BLLT done127loo
LDRB R9,[R1]       ; if so load in pixel value
STRB R9,[R0],#320
SUB R7,R7,#64
.done127loo
ADD R1,R1,#64
ADD R7,R7,R3         ; add scale onto vert. error term
SUBS R8,R8,#1
BLNE loopy127loo         ; loop if so
LDMFD R13!,{R1-R12,R15}^

/*MOVS PC,R14*/


.loopy191loo
.doddle191
CMP R7,#64
LDRB R9,[R1]       ; if so load in pixel value
STRB R9,[R0],#320
SUB R7,R7,#64
CMP R7,#64
LDRB R9,[R1]       ; if so load in pixel value
STRB R9,[R0],#320
SUB R7,R7,#64
CMP R7,#64
BLT done191loo
LDRB R9,[R1]       ; if so load in pixel value
STRB R9,[R0],#320
SUB R7,R7,#64
.done191loo
ADD R1,R1,#64
ADD R7,R7,R3         ; add scale onto vert. error term
SUBS R8,R8,#1
BLNE loopy191loo         ; loop if so
LDMFD R13!,{R1-R12,R15}^
/*MOVS PC,R14*/


.loopy192loo
.doddle192
CMP R7,#64
LDRB R9,[R1]       ; if so load in pixel value
STRB R9,[R0],#320
SUB R7,R7,#64
CMP R7,#64
LDRB R9,[R1]       ; if so load in pixel value
STRB R9,[R0],#320
SUB R7,R7,#64
CMP R7,#64
LDRB R9,[R1]       ; if so load in pixel value
STRB R9,[R0],#320
SUB R7,R7,#64
CMP R7,#64
BLLT done192loo
LDRB R9,[R1]       ; if so load in pixel value
STRB R9,[R0],#320
SUB R7,R7,#64
.done192loo
ADD R1,R1,#64
ADD R7,R7,R3         ; add scale onto vert. error term
SUBS R8,R8,#1
BLNE loopy192loo         ; loop if so
.endoffunction
LDMFD R13!,{R1-R12,R15}^
/*MOVS PC,R14^*/

EXPORT ourlib_sliverx
.ourlib_sliverx
STMFD R13!,{R0-R12,R14}
LDMIA R0,{R0-R7}
MOV R10,#256
CMP R3,R5
MOVGE R3,R5

.noclippingx
ADD R1,R1,R6,LSL #12 ; calculate offset in walls[][] array
ADD R1,R1,R2         ; add the column to this
MOV R8,#100
SUB R8,R8,R3,LSR #1 ; set start y pos
ADD R4,R4,R8,LSL #8 ; work out usual screen (320x256)
ADD R4,R4,R8,LSL #6 ; offset to begin loop
ADD R0,R0,R4

; setup inc and fixed
MOV R9,#0,LSL #16
MOV R11,#0
; R3 holds counter
.loopxxx
LDRB R10,[R1,R11,LSL #6]
STRB R10,[R0],#320
ADD R9,R9,R7
MOV R11,R9,LSR #16

;endxxx
SUBS R3,R3,#1
BNE loopxxx


LDMFD R13!,{R0-R12,R15}^
/*MOVS PC,R14^*/

EXPORT ourlib_slowclear
.ourlib_slowclear
STMFD R13!,{R0-R5,R14}

.clearing
STRB R2,[R0,R1]
SUBS R1,R1,#1
BNE clearing
LDMFD R13!,{R0-R5,R15}

EXPORT ourlib_fastclg_two
.ourlib_fastclg_two

STMFD R13!,{R0-R12,R14}

MOV R4,#128

SUB R4,R4,R2,ASR #1
ADD R11,R0,R4,LSL #8
ADD R11,R11,R4,LSL #6
MOV R10,R11 ; start offset calculated
MOV R9,R1

MOV R12,R2,LSR #1

LDR R0,topcolour
MOV R1,R0
MOV R2,R0
MOV R3,R0
MOV R4,R0
MOV R5,R0
MOV R6,R0
MOV R7,R0

MOV R14,R12
.y_loop
MOV R8,R9,LSR #5
.x_loop

STMIA R11!,{R0-R7}
SUBS R8,R8,#1
BNE x_loop

ADD R10,R10,#320
MOV R11,R10

SUBS R12,R12,#1
BNE y_loop

LDR R0,bottomcolour
MOV R1,R0
MOV R2,R0
MOV R3,R0
MOV R4,R0
MOV R5,R0
MOV R6,R0
MOV R7,R0
MOV R12,R14
.y_loopb
MOV R8,R9,LSR #5
.x_loopb

STMIA R11!,{R0-R7}
SUBS R8,R8,#1
BNE x_loopb

ADD R10,R10,#320
MOV R11,R10

SUBS R12,R12,#1
BNE y_loopb










LDMFD R13!,{R0-R12,R15}^


EXPORT ourlib_fastclg
.ourlib_fastclg
STMFD R13!,{R1-R12,R14}


MOV R11,R0


MOV R10,#32

LDR R0,topcolour
MOV R0,R0
MOV R1,R0
MOV R2,R0
MOV R3,R0
MOV R4,R0
MOV R5,R0
MOV R6,R0
MOV R7,R0
MOV R8,R0
MOV R9,R0
.fast
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
SUBS   R10,R10,#1
BNE    fast


MOV R10,#32
LDR R1,bottomcolour
MOV R0,R1
MOV R2,R1
MOV R3,R1
MOV R4,R1
MOV R5,R1
MOV R6,R1
MOV R7,R1
MOV R8,R1
MOV R9,R1
.fast2
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
STMIA  R11!,{R0-R9}
SUBS   R10,R10,#1
BNE    fast2
LDMFD R13!,{R1-R12,R15}^


.topcolour
EQUD 0
.bottomcolour
EQUD 0
.screenyoffset
EQUD 0
.screenystop
EQUD 0
.screenxoffset
EQUD 0
.screenxstop
EQUD 0




EXPORT ourlib_setupbackground
.ourlib_setup_background
STMFD R13!,{R1-R6,R14}
/*MOV R10,#320
SUB R9,R10,R2,LSR #1
STR R9,screenxoffset
SUB R9,R10,R9
STR R9,screenxstop
MOV R10,#128
SUB R9,R10,R3,LSR #1
STR R9,screenyoffset
MOV R10,#256
SUB R9,R10,R9
STR R9,screenystop*/

MOV R3,R0
MOV R4,R1

ORR R0,R0,R3
ORR R0,R0,R3,LSL #8
ORR R0,R0,R3,LSL #16
ORR R0,R0,R3,LSL #24
STR R0,topcolour

MOV R0,#0
ORR R0,R0,R4
ORR R0,R0,R4,LSL #8
ORR R0,R0,R4,LSL #16
ORR R0,R0,R4,LSL #24
STR R0,bottomcolour
LDMFD R13!,{R1-R6,R15}^

EXPORT colour_box
.colour_box

/* R0 = video_address R1= startx R2 = starty R3 = endx R4 = endy R5 = colour*/
STMFD R13!,{R1-R10,R14}
LDMIA R0,{R0-R5}

MOV R6,R2

.loop_y
MOV R7,R1
.loop_x
ADD R8,R7,R6,LSL #8
ADD R8,R8,R6,LSL #6
STRB R5,[R0,R8]
ADD R7,R7,#1
CMP R7,R3
BLT loop_x

ADD R6,R6,#1
CMP R6,R4
BLT loop_y

LDMFD R13!,{R1-R10,PC}






EXPORT ourlib_rayback
.ourlib_rayback
STMFD R13!,{R1-R12,R14}

MOV R12,#00000000000000
MOV R2,#20480

.raybackloop
STR R12,[R0,#4]!
SUBS R2,R2 ,#1
BNE raybackloop


LDMFD R13!,{R1-R12,R15}^

EXPORT ourlib_waitvsync
.ourlib_waitvsync
STMFD R13!,{R1-R2,R14}
MOV R0,#19
SWI OS_Byte
LDMFD R13!,{R1-R2,R15}^

EXPORT ourlib_screen_rotate
.ourlib_screen_rotate
STMFD R13!,{R1-R4,R14}
LDR R1,screensize
LDR R1,screensize
.rotateloop
LDRB R3,[R0]
MOV R3,R3,ROR #24
STRB R3,[R0],#1
SUBS R1,R1,#1
BNE rotateloop
LDMFD R13!,{R1-R4,PC}
.screensize
EQUD 81920




EXPORT ourlib_fade_out
.ourlib_fade_out
STMFD R13!,{R1-R7,R14}
/* R0 = videoaddress R1 = screensize */

ADD R0,R0,R1         ; Point R0 to bottom of screen
MOV R5,#8            ; Loop will execute  #4 cycles
.outer_loop          ; Outer loop begins
MOV R4,R1            ; Move screensize into temp R4
.fader_loop          ; Inner loop begins
SUB R2,R0,R4         ; Subtract R4 from screen pointer
LDRB R3,[R2]         ; Load the value pointed to
MOV R3,R3,LSR #1     ; Shift (fade) it
STRB R3,[R2]         ; And store it back where it was
SUBS R4,R4,#1        ; Move pointer to next pixel
BNE fader_loop       ; Loop if not done yet
SUBS R5,R5,#1        ; Decrement outer loop counter
BNE outer_loop       ; Loop again if incomplete
LDMFD R13!,{R1-R7,PC}^

EXPORT ourlib_colourscreen13
.ourlib_colourscreen13

STMFD R13!,{R1-R12,R14}
/* R0 = video_address R1 = pixels R2 = colour */

.loop_pixel
STRB R2,[R0,R1]
SUBS R1,R1,#1
BNE loop_pixel
LDMFD R13!,{R1-R12,R15}^


EXPORT ourlib_findscreen
.ourlib_findscreen
STMFD R13!,{R1-R5,R14}
ADR R0,Screen_Params
ADR R1,Screen_Address
SWI "OS_ReadVduVariables"
LDR R0,Screen_Address
LDMFD R13!,{R1-R5,R15}^
.Screen_Address
EQUD 0;
.Screen_Params
EQUD 148;
EQUD -1;


#pragma endasm


void ourlib_write(char string[]);
void ourlib_bitmap_plot(int start_x,int start_y,int end_x,int end_y,char *memory,char *video);
void ourlib_bitmap_grab(int start_x,int start_y,int end_x,int end_y,char *memory,char *video);


void ourlib_bitmap_grab(int start_x,int start_y,int end_x,int end_y,char *memory,char *video)
{
  int offset_in_memory;
  int offset_in_screen;
  int pixel_x,pixel_y;

  for(offset_in_memory=0,pixel_y=start_y;pixel_y<=end_y;pixel_y++)
  {
    for(pixel_x=start_x;pixel_x<=end_x;pixel_x++,offset_in_memory++)
    {
      offset_in_screen=pixel_x+(pixel_y<<6)+(pixel_y<<8);
      memory[offset_in_memory]=*(video+offset_in_screen);

    }
  }

}
void ourlib_bitmap_plot(int start_x,int start_y,int end_x,int end_y,char *memory,char *video)
{
  int offset_in_memory;
  int offset_in_screen;
  int pixel_x,pixel_y;

  for(offset_in_memory=0,pixel_y=start_y;pixel_y<=end_y;pixel_y++)
  {
    for(pixel_x=start_x;pixel_x<=end_x;pixel_x++,offset_in_memory++)
    {
      offset_in_screen=pixel_x+(pixel_y<<6)+(pixel_y<<8);
      *(video+offset_in_screen)=memory[offset_in_memory];
    }
  }
}
void ourlib_write(char string[])
{
 printf("%s\n",string);
}
void ourlib_bitmap_scale(char *screen,int screenx,int screeny,int percent, int width,int height,char *bitmap)
{


      int yerror=0;

      /*int screeny=(200-percent)/2;*/
int xerror,x;


      unsigned int scrptr=screeny*320+screenx;
      unsigned int bitptr=0;

      int y;
unsigned int old_scrptr;
unsigned int old_bitptr;
      for (y=0; y<height; y++) {



        yerror+=percent;



        while (yerror>100) {



          yerror-=100;


        old_scrptr=scrptr;



         old_bitptr=bitptr;



           xerror=0;



          for ( x=0; x<width; x++) {


            xerror+=percent;


            while (xerror>100) {



              xerror-=100;



              screen[scrptr]=bitmap[bitptr];


              scrptr++;
            }


            bitptr++;
          }



          scrptr=old_scrptr+320;



          bitptr=old_bitptr;
        }



        bitptr+=width;
      }



    }

void ourlib_screen_dissolve(char *screen_address,int screen_size)
{
  int number,
  counter;
  float temp;


  for(counter=400000;counter>0;counter--)
  {
   number=rand();

   temp=(float)number/RAND_MAX;
 number=(float)temp*screen_size;;
if(number>screen_size)number=screen_size;

 *(screen_address+number)=0;

  }



}
void ourlib_screen_shift(char *screen_address,int screen_size)
{
 int counter;


  for(counter=screen_size;counter>0;counter--)
  {
 *(screen_address+counter)>>=1;

  }



}

void ourlib_screen_switch(char *screen_address,char *memory,int screen_size)
{
  int number,
  counter;
  float temp;


  for(counter=400000;counter>0;counter--)
  {
   number=rand();

   temp=(float)number/RAND_MAX;
 number=(float)temp*screen_size;;
if(number>screen_size)number=screen_size;

 *(screen_address+number)=*(memory+number);

  }

}
00000000  2f 2a 0a 20 20 20 6f 75  72 5f 6c 69 62 2e 68 20  |/*.   our_lib.h |
00000010  3a 20 57 72 69 74 74 65  6e 20 62 79 20 47 72 65  |: Written by Gre|
00000020  67 20 53 63 6f 74 74 20  20 20 31 39 39 37 0a 20  |g Scott   1997. |
00000030  20 20 66 6f 72 20 41 63  6f 72 6e 20 55 73 65 72  |  for Acorn User|
00000040  2c 20 61 73 20 70 61 72  74 20 6f 66 20 74 68 65  |, as part of the|
00000050  20 22 56 69 72 74 75 61  6c 0a 20 20 20 57 6f 72  | "Virtual.   Wor|
00000060  6c 64 73 22 20 73 65 72  69 65 73 2e 0a 0a 20 20  |lds" series...  |
00000070  20 55 73 61 67 65 20 6f  66 20 74 68 65 20 73 6f  | Usage of the so|
00000080  75 72 63 65 20 63 6f 64  65 20 69 73 20 64 6f 6e  |urce code is don|
00000090  65 20 61 74 20 74 68 65  0a 20 20 20 6f 77 6e 65  |e at the.   owne|
000000a0  72 73 20 72 69 73 6b 2c  20 61 6e 64 20 41 63 6f  |rs risk, and Aco|
000000b0  72 6e 20 55 73 65 72 20  6f 72 20 74 68 65 20 61  |rn User or the a|
000000c0  75 74 68 0a 20 20 20 6f  72 20 68 6f 6c 64 20 6e  |uth.   or hold n|
000000d0  6f 20 72 65 73 70 6f 6e  73 69 62 69 6c 69 74 79  |o responsibility|
000000e0  20 66 6f 72 20 64 61 6d  61 67 65 73 2e 0a 0a 20  | for damages... |
000000f0  20 20 54 68 69 73 20 68  61 73 20 62 65 65 6e 20  |  This has been |
00000100  77 72 69 74 74 65 6e 20  77 69 74 68 20 45 61 73  |written with Eas|
00000110  79 43 2f 43 2b 2b 2c 20  68 65 6e 63 65 0a 20 20  |yC/C++, hence.  |
00000120  20 74 68 65 20 23 70 72  61 67 6d 61 20 63 6f 6d  | the #pragma com|
00000130  6d 61 6e 64 73 2e 20 41  20 6c 69 74 74 6c 65 20  |mands. A little |
00000140  63 75 74 74 69 6e 67 2f  70 61 73 74 69 6e 67 0a  |cutting/pasting.|
00000150  20 20 20 73 68 6f 75 6c  64 20 62 65 20 61 64 65  |   should be ade|
00000160  71 75 61 74 65 20 66 6f  72 20 6f 74 68 65 72 20  |quate for other |
00000170  63 6f 6d 70 69 6c 65 72  73 2e 20 4f 74 68 65 72  |compilers. Other|
00000180  77 69 73 65 0a 20 20 20  6a 75 73 74 20 72 75 6e  |wise.   just run|
00000190  20 74 68 65 20 65 78 65  63 75 74 61 62 6c 65 21  | the executable!|
000001a0  0a 2a 2f 0a 0a 23 69 6e  63 6c 75 64 65 20 3c 73  |.*/..#include <s|
000001b0  74 64 69 6f 2e 68 3e 0a  0a 2f 2a 20 41 73 73 65  |tdio.h>../* Asse|
000001c0  6d 62 6c 65 72 20 46 75  6e 63 74 69 6f 6e 73 20  |mbler Functions |
000001d0  28 53 57 49 73 2c 20 65  74 63 29 20 2a 2f 0a 23  |(SWIs, etc) */.#|
000001e0  70 72 61 67 6d 61 20 61  73 6d 0a 45 58 50 4f 52  |pragma asm.EXPOR|
000001f0  54 20 6f 75 72 6c 69 62  5f 67 65 74 74 69 6d 65  |T ourlib_gettime|
00000200  0a 2e 6f 75 72 6c 69 62  5f 67 65 74 74 69 6d 65  |..ourlib_gettime|
00000210  0a 0a 53 54 4d 46 44 20  52 31 33 21 2c 7b 52 31  |..STMFD R13!,{R1|
00000220  2d 52 34 2c 52 31 34 7d  0a 53 57 49 20 4f 53 5f  |-R4,R14}.SWI OS_|
00000230  52 65 61 64 4d 6f 6e 6f  74 6f 6e 69 63 54 69 6d  |ReadMonotonicTim|
00000240  65 0a 4c 44 4d 46 44 20  52 31 33 21 2c 7b 52 31  |e.LDMFD R13!,{R1|
00000250  2d 52 34 2c 52 31 35 7d  0a 0a 0a 0a 45 58 50 4f  |-R4,R15}....EXPO|
00000260  52 54 20 6f 75 72 6c 69  62 5f 6b 65 79 64 6f 77  |RT ourlib_keydow|
00000270  6e 0a 2e 6f 75 72 6c 69  62 5f 6b 65 79 64 6f 77  |n..ourlib_keydow|
00000280  6e 0a 53 54 4d 46 44 20  52 31 33 21 2c 7b 52 31  |n.STMFD R13!,{R1|
00000290  2d 52 32 2c 52 31 34 7d  0a 0a 45 4f 52 20 52 31  |-R2,R14}..EOR R1|
000002a0  2c 52 30 2c 23 31 32 38  0a 4d 4f 56 20 52 30 2c  |,R0,#128.MOV R0,|
000002b0  23 31 32 31 0a 53 57 49  20 4f 53 5f 42 79 74 65  |#121.SWI OS_Byte|
000002c0  0a 4d 4f 56 20 52 30 2c  52 31 0a 4c 44 4d 46 44  |.MOV R0,R1.LDMFD|
000002d0  20 52 31 33 21 2c 7b 52  31 2d 52 32 2c 50 43 7d  | R13!,{R1-R2,PC}|
000002e0  0a 0a 0a 0a 45 58 50 4f  52 54 20 6f 75 72 6c 69  |....EXPORT ourli|
000002f0  62 5f 73 6c 69 76 65 72  5f 6d 61 73 6b 0a 2e 6f  |b_sliver_mask..o|
00000300  75 72 6c 69 62 5f 73 6c  69 76 65 72 5f 6d 61 73  |urlib_sliver_mas|
00000310  6b 0a 53 54 4d 46 44 20  52 31 33 21 2c 7b 52 31  |k.STMFD R13!,{R1|
00000320  2d 52 39 2c 52 31 34 7d  0a 4c 44 4d 49 41 20 52  |-R9,R14}.LDMIA R|
00000330  30 2c 7b 52 30 2d 52 34  7d 0a 2f 2a 0a 2e 6e 6f  |0,{R0-R4}./*..no|
00000340  63 6c 69 70 70 69 6e 67  7a 0a 41 44 44 20 52 31  |clippingz.ADD R1|
00000350  2c 52 31 2c 52 36 2c 4c  53 4c 20 23 31 32 20 3b  |,R1,R6,LSL #12 ;|
00000360  20 63 61 6c 63 75 6c 61  74 65 20 6f 66 66 73 65  | calculate offse|
00000370  74 20 69 6e 20 77 61 6c  6c 73 5b 5d 5b 5d 20 61  |t in walls[][] a|
00000380  72 72 61 79 0a 41 44 44  20 52 31 2c 52 31 2c 52  |rray.ADD R1,R1,R|
00000390  32 20 20 20 20 20 20 20  20 20 3b 20 61 64 64 20  |2         ; add |
000003a0  74 68 65 20 63 6f 6c 75  6d 6e 20 74 6f 20 74 68  |the column to th|
000003b0  69 73 0a 2a 2f 0a 43 4d  50 20 52 33 2c 52 32 0a  |is.*/.CMP R3,R2.|
000003c0  4d 4f 56 47 45 20 52 33  2c 52 32 0a 0a 4d 4f 56  |MOVGE R3,R2..MOV|
000003d0  20 52 38 2c 23 31 32 38  0a 53 55 42 20 52 38 2c  | R8,#128.SUB R8,|
000003e0  52 38 2c 52 33 2c 4c 53  52 20 23 31 20 3b 20 73  |R8,R3,LSR #1 ; s|
000003f0  65 74 20 73 74 61 72 74  20 79 20 70 6f 73 0a 41  |et start y pos.A|
00000400  44 44 20 52 34 2c 52 34  2c 52 38 2c 4c 53 4c 20  |DD R4,R4,R8,LSL |
00000410  23 38 20 3b 20 77 6f 72  6b 20 6f 75 74 20 75 73  |#8 ; work out us|
00000420  75 61 6c 20 73 63 72 65  65 6e 20 28 33 32 30 78  |ual screen (320x|
00000430  32 35 36 29 0a 41 44 44  20 52 34 2c 52 34 2c 52  |256).ADD R4,R4,R|
00000440  38 2c 4c 53 4c 20 23 36  20 3b 20 6f 66 66 73 65  |8,LSL #6 ; offse|
00000450  74 20 74 6f 20 62 65 67  69 6e 20 6c 6f 6f 70 0a  |t to begin loop.|
00000460  41 44 44 20 52 30 2c 52  30 2c 52 34 0a 0a 4d 4f  |ADD R0,R0,R4..MO|
00000470  56 20 52 38 2c 23 36 34  20 20 20 20 20 20 20 20  |V R8,#64        |
00000480  3b 20 73 74 61 72 74 20  6c 6f 6f 70 20 63 6f 75  |; start loop cou|
00000490  6e 74 65 72 0a 4d 4f 56  20 52 37 2c 52 38 0a 0a  |nter.MOV R7,R8..|
000004a0  43 4d 50 20 52 33 2c 23  36 34 0a 42 4c 4c 45 20  |CMP R3,#64.BLLE |
000004b0  6c 6f 6f 70 79 36 34 6c  6f 6f 7a 0a 43 4d 50 20  |loopy64looz.CMP |
000004c0  52 33 2c 23 31 32 37 0a  42 4c 4c 45 20 6c 6f 6f  |R3,#127.BLLE loo|
000004d0  70 79 31 32 37 6c 6f 6f  7a 0a 43 4d 50 20 52 33  |py127looz.CMP R3|
000004e0  2c 23 31 39 31 0a 42 4c  4c 45 20 6c 6f 6f 70 79  |,#191.BLLE loopy|
000004f0  31 39 31 6c 6f 6f 7a 0a  42 4c 20 6c 6f 6f 70 79  |191looz.BL loopy|
00000500  31 39 32 6c 6f 6f 7a 0a  2e 6c 6f 6f 70 79 36 34  |192looz..loopy64|
00000510  6c 6f 6f 7a 0a 2e 64 6f  64 64 6c 65 36 34 7a 0a  |looz..doddle64z.|
00000520  43 4d 50 20 52 37 2c 23  36 34 0a 42 4c 4c 54 20  |CMP R7,#64.BLLT |
00000530  64 6f 6e 65 36 34 6c 6f  6f 7a 0a 4c 44 52 42 20  |done64looz.LDRB |
00000540  52 39 2c 5b 52 31 5d 20  20 20 20 20 20 20 3b 20  |R9,[R1]       ; |
00000550  69 66 20 73 6f 20 6c 6f  61 64 20 69 6e 20 70 69  |if so load in pi|
00000560  78 65 6c 20 76 61 6c 75  65 0a 53 55 42 20 52 37  |xel value.SUB R7|
00000570  2c 52 37 2c 23 36 34 0a  43 4d 50 20 52 39 2c 23  |,R7,#64.CMP R9,#|
00000580  30 0a 2f 2a 42 45 51 20  73 6b 69 70 31 2a 2f 0a  |0./*BEQ skip1*/.|
00000590  53 54 52 4e 45 42 20 52  39 2c 5b 52 30 5d 0a 2e  |STRNEB R9,[R0]..|
000005a0  73 6b 69 70 31 0a 41 44  44 20 52 30 2c 52 30 2c  |skip1.ADD R0,R0,|
000005b0  23 33 32 30 0a 0a 2e 64  6f 6e 65 36 34 6c 6f 6f  |#320...done64loo|
000005c0  7a 0a 41 44 44 20 52 31  2c 52 31 2c 23 36 34 0a  |z.ADD R1,R1,#64.|
000005d0  41 44 44 20 52 37 2c 52  37 2c 52 33 20 20 20 20  |ADD R7,R7,R3    |
000005e0  20 20 20 20 20 3b 20 61  64 64 20 73 63 61 6c 65  |     ; add scale|
000005f0  20 6f 6e 74 6f 20 76 65  72 74 2e 20 65 72 72 6f  | onto vert. erro|
00000600  72 20 74 65 72 6d 0a 53  55 42 53 20 52 38 2c 52  |r term.SUBS R8,R|
00000610  38 2c 23 31 0a 42 4c 4e  45 20 6c 6f 6f 70 79 36  |8,#1.BLNE loopy6|
00000620  34 6c 6f 6f 7a 20 20 20  20 20 20 20 20 20 3b 20  |4looz         ; |
00000630  6c 6f 6f 70 20 69 66 20  73 6f 0a 0a 4c 44 4d 46  |loop if so..LDMF|
00000640  44 20 52 31 33 21 2c 7b  52 31 2d 52 39 2c 52 31  |D R13!,{R1-R9,R1|
00000650  35 7d 5e 0a 0a 2e 6c 6f  6f 70 79 31 32 37 6c 6f  |5}^...loopy127lo|
00000660  6f 7a 0a 2e 64 6f 64 64  6c 65 31 32 37 7a 0a 43  |oz..doddle127z.C|
00000670  4d 50 20 52 37 2c 23 36  34 0a 4c 44 52 42 20 52  |MP R7,#64.LDRB R|
00000680  39 2c 5b 52 31 5d 20 20  20 20 20 20 20 3b 20 69  |9,[R1]       ; i|
00000690  66 20 73 6f 20 6c 6f 61  64 20 69 6e 20 70 69 78  |f so load in pix|
000006a0  65 6c 20 76 61 6c 75 65  0a 53 55 42 20 52 37 2c  |el value.SUB R7,|
000006b0  52 37 2c 23 36 34 0a 43  4d 50 20 52 39 2c 23 30  |R7,#64.CMP R9,#0|
000006c0  0a 2f 2a 42 45 51 20 73  6b 69 70 32 2a 2f 0a 53  |./*BEQ skip2*/.S|
000006d0  54 52 4e 45 42 20 52 39  2c 5b 52 30 5d 0a 2e 73  |TRNEB R9,[R0]..s|
000006e0  6b 69 70 32 0a 41 44 44  20 52 30 2c 52 30 2c 23  |kip2.ADD R0,R0,#|
000006f0  33 32 30 0a 0a 43 4d 50  20 52 37 2c 23 36 34 0a  |320..CMP R7,#64.|
00000700  42 4c 4c 54 20 64 6f 6e  65 31 32 37 6c 6f 6f 7a  |BLLT done127looz|
00000710  0a 4c 44 52 42 20 52 39  2c 5b 52 31 5d 20 20 20  |.LDRB R9,[R1]   |
00000720  20 20 20 20 3b 20 69 66  20 73 6f 20 6c 6f 61 64  |    ; if so load|
00000730  20 69 6e 20 70 69 78 65  6c 20 76 61 6c 75 65 0a  | in pixel value.|
00000740  53 55 42 20 52 37 2c 52  37 2c 23 36 34 0a 43 4d  |SUB R7,R7,#64.CM|
00000750  50 20 52 39 2c 23 30 0a  2f 2a 42 45 51 20 73 6b  |P R9,#0./*BEQ sk|
00000760  69 70 33 2a 2f 0a 53 54  52 4e 45 42 20 52 39 2c  |ip3*/.STRNEB R9,|
00000770  5b 52 30 5d 0a 2e 73 6b  69 70 33 0a 41 44 44 20  |[R0]..skip3.ADD |
00000780  52 30 2c 52 30 2c 23 33  32 30 0a 0a 2e 64 6f 6e  |R0,R0,#320...don|
00000790  65 31 32 37 6c 6f 6f 7a  0a 41 44 44 20 52 31 2c  |e127looz.ADD R1,|
000007a0  52 31 2c 23 36 34 0a 41  44 44 20 52 37 2c 52 37  |R1,#64.ADD R7,R7|
000007b0  2c 52 33 20 20 20 20 20  20 20 20 20 3b 20 61 64  |,R3         ; ad|
000007c0  64 20 73 63 61 6c 65 20  6f 6e 74 6f 20 76 65 72  |d scale onto ver|
000007d0  74 2e 20 65 72 72 6f 72  20 74 65 72 6d 0a 53 55  |t. error term.SU|
000007e0  42 53 20 52 38 2c 52 38  2c 23 31 0a 42 4c 4e 45  |BS R8,R8,#1.BLNE|
000007f0  20 6c 6f 6f 70 79 31 32  37 6c 6f 6f 7a 20 20 20  | loopy127looz   |
00000800  20 20 20 20 20 20 3b 20  6c 6f 6f 70 20 69 66 20  |      ; loop if |
00000810  73 6f 0a 4c 44 4d 46 44  20 52 31 33 21 2c 7b 52  |so.LDMFD R13!,{R|
00000820  31 2d 52 39 2c 52 31 35  7d 5e 0a 0a 0a 2e 6c 6f  |1-R9,R15}^....lo|
00000830  6f 70 79 31 39 31 6c 6f  6f 7a 0a 2e 64 6f 64 64  |opy191looz..dodd|
00000840  6c 65 31 39 31 7a 0a 43  4d 50 20 52 37 2c 23 36  |le191z.CMP R7,#6|
00000850  34 0a 4c 44 52 42 20 52  39 2c 5b 52 31 5d 20 20  |4.LDRB R9,[R1]  |
00000860  20 20 20 20 20 3b 20 69  66 20 73 6f 20 6c 6f 61  |     ; if so loa|
00000870  64 20 69 6e 20 70 69 78  65 6c 20 76 61 6c 75 65  |d in pixel value|
00000880  0a 53 55 42 20 52 37 2c  52 37 2c 23 36 34 0a 43  |.SUB R7,R7,#64.C|
00000890  4d 50 20 52 39 2c 23 30  0a 2f 2a 42 45 51 20 73  |MP R9,#0./*BEQ s|
000008a0  6b 69 70 34 2a 2f 0a 53  54 52 4e 45 42 20 52 39  |kip4*/.STRNEB R9|
000008b0  2c 5b 52 30 5d 0a 2e 73  6b 69 70 34 0a 41 44 44  |,[R0]..skip4.ADD|
000008c0  20 52 30 2c 52 30 2c 23  33 32 30 0a 0a 43 4d 50  | R0,R0,#320..CMP|
000008d0  20 52 37 2c 23 36 34 0a  4c 44 52 42 20 52 39 2c  | R7,#64.LDRB R9,|
000008e0  5b 52 31 5d 20 20 20 20  20 20 20 3b 20 69 66 20  |[R1]       ; if |
000008f0  73 6f 20 6c 6f 61 64 20  69 6e 20 70 69 78 65 6c  |so load in pixel|
00000900  20 76 61 6c 75 65 0a 53  55 42 20 52 37 2c 52 37  | value.SUB R7,R7|
00000910  2c 23 36 34 0a 43 4d 50  20 52 39 2c 23 30 0a 2f  |,#64.CMP R9,#0./|
00000920  2a 42 45 51 20 73 6b 69  70 35 2a 2f 0a 53 54 52  |*BEQ skip5*/.STR|
00000930  4e 45 42 20 52 39 2c 5b  52 30 5d 0a 2e 73 6b 69  |NEB R9,[R0]..ski|
00000940  70 35 0a 41 44 44 20 52  30 2c 52 30 2c 23 33 32  |p5.ADD R0,R0,#32|
00000950  30 0a 0a 43 4d 50 20 52  37 2c 23 36 34 0a 42 4c  |0..CMP R7,#64.BL|
00000960  54 20 64 6f 6e 65 31 39  31 6c 6f 6f 7a 0a 4c 44  |T done191looz.LD|
00000970  52 42 20 52 39 2c 5b 52  31 5d 20 20 20 20 20 20  |RB R9,[R1]      |
00000980  20 3b 20 69 66 20 73 6f  20 6c 6f 61 64 20 69 6e  | ; if so load in|
00000990  20 70 69 78 65 6c 20 76  61 6c 75 65 0a 53 55 42  | pixel value.SUB|
000009a0  20 52 37 2c 52 37 2c 23  36 34 0a 43 4d 50 20 52  | R7,R7,#64.CMP R|
000009b0  39 2c 23 30 0a 2f 2a 42  45 51 20 73 6b 69 70 36  |9,#0./*BEQ skip6|
000009c0  2a 2f 0a 53 54 52 4e 45  42 20 52 39 2c 5b 52 30  |*/.STRNEB R9,[R0|
000009d0  5d 0a 2e 73 6b 69 70 36  0a 41 44 44 20 52 30 2c  |]..skip6.ADD R0,|
000009e0  52 30 2c 23 33 32 30 0a  0a 2e 64 6f 6e 65 31 39  |R0,#320...done19|
000009f0  31 6c 6f 6f 7a 0a 41 44  44 20 52 31 2c 52 31 2c  |1looz.ADD R1,R1,|
00000a00  23 36 34 0a 41 44 44 20  52 37 2c 52 37 2c 52 33  |#64.ADD R7,R7,R3|
00000a10  20 20 20 20 20 20 20 20  20 3b 20 61 64 64 20 73  |         ; add s|
00000a20  63 61 6c 65 20 6f 6e 74  6f 20 76 65 72 74 2e 20  |cale onto vert. |
00000a30  65 72 72 6f 72 20 74 65  72 6d 0a 53 55 42 53 20  |error term.SUBS |
00000a40  52 38 2c 52 38 2c 23 31  0a 42 4c 4e 45 20 6c 6f  |R8,R8,#1.BLNE lo|
00000a50  6f 70 79 31 39 31 6c 6f  6f 7a 20 20 20 20 20 20  |opy191looz      |
00000a60  20 20 20 3b 20 6c 6f 6f  70 20 69 66 20 73 6f 0a  |   ; loop if so.|
00000a70  4c 44 4d 46 44 20 52 31  33 21 2c 7b 52 31 2d 52  |LDMFD R13!,{R1-R|
00000a80  39 2c 52 31 35 7d 5e 0a  0a 2e 6c 6f 6f 70 79 31  |9,R15}^...loopy1|
00000a90  39 32 6c 6f 6f 7a 0a 2e  64 6f 64 64 6c 65 31 39  |92looz..doddle19|
00000aa0  32 7a 0a 43 4d 50 20 52  37 2c 23 36 34 0a 4c 44  |2z.CMP R7,#64.LD|
00000ab0  52 42 20 52 39 2c 5b 52  31 5d 20 20 20 20 20 20  |RB R9,[R1]      |
00000ac0  20 3b 20 69 66 20 73 6f  20 6c 6f 61 64 20 69 6e  | ; if so load in|
00000ad0  20 70 69 78 65 6c 20 76  61 6c 75 65 0a 53 55 42  | pixel value.SUB|
00000ae0  20 52 37 2c 52 37 2c 23  36 34 0a 43 4d 50 20 52  | R7,R7,#64.CMP R|
00000af0  39 2c 23 30 0a 2f 2a 42  45 51 20 73 6b 69 70 37  |9,#0./*BEQ skip7|
00000b00  2a 2f 0a 53 54 52 4e 45  42 20 52 39 2c 5b 52 30  |*/.STRNEB R9,[R0|
00000b10  5d 0a 2e 73 6b 69 70 37  0a 41 44 44 20 52 30 2c  |]..skip7.ADD R0,|
00000b20  52 30 2c 23 33 32 30 0a  0a 43 4d 50 20 52 37 2c  |R0,#320..CMP R7,|
00000b30  23 36 34 0a 4c 44 52 42  20 52 39 2c 5b 52 31 5d  |#64.LDRB R9,[R1]|
00000b40  20 20 20 20 20 20 20 3b  20 69 66 20 73 6f 20 6c  |       ; if so l|
00000b50  6f 61 64 20 69 6e 20 70  69 78 65 6c 20 76 61 6c  |oad in pixel val|
00000b60  75 65 0a 53 55 42 20 52  37 2c 52 37 2c 23 36 34  |ue.SUB R7,R7,#64|
00000b70  0a 43 4d 50 20 52 39 2c  23 30 0a 42 45 51 20 73  |.CMP R9,#0.BEQ s|
00000b80  6b 69 70 38 0a 53 54 52  42 20 52 39 2c 5b 52 30  |kip8.STRB R9,[R0|
00000b90  5d 0a 2e 73 6b 69 70 38  0a 41 44 44 20 52 30 2c  |]..skip8.ADD R0,|
00000ba0  52 30 2c 23 33 32 30 0a  0a 43 4d 50 20 52 37 2c  |R0,#320..CMP R7,|
00000bb0  23 36 34 0a 4c 44 52 42  20 52 39 2c 5b 52 31 5d  |#64.LDRB R9,[R1]|
00000bc0  20 20 20 20 20 20 20 3b  20 69 66 20 73 6f 20 6c  |       ; if so l|
00000bd0  6f 61 64 20 69 6e 20 70  69 78 65 6c 20 76 61 6c  |oad in pixel val|
00000be0  75 65 0a 53 55 42 20 52  37 2c 52 37 2c 23 36 34  |ue.SUB R7,R7,#64|
00000bf0  0a 43 4d 50 20 52 39 2c  23 30 0a 2f 2a 42 45 51  |.CMP R9,#0./*BEQ|
00000c00  20 73 6b 69 70 39 2a 2f  0a 53 54 52 4e 45 42 20  | skip9*/.STRNEB |
00000c10  52 39 2c 5b 52 30 5d 0a  2e 73 6b 69 70 39 0a 41  |R9,[R0]..skip9.A|
00000c20  44 44 20 52 30 2c 52 30  2c 23 33 32 30 0a 0a 43  |DD R0,R0,#320..C|
00000c30  4d 50 20 52 37 2c 23 36  34 0a 42 4c 4c 54 20 64  |MP R7,#64.BLLT d|
00000c40  6f 6e 65 31 39 32 6c 6f  6f 7a 0a 4c 44 52 42 20  |one192looz.LDRB |
00000c50  52 39 2c 5b 52 31 5d 20  20 20 20 20 20 20 3b 20  |R9,[R1]       ; |
00000c60  69 66 20 73 6f 20 6c 6f  61 64 20 69 6e 20 70 69  |if so load in pi|
00000c70  78 65 6c 20 76 61 6c 75  65 0a 53 55 42 20 52 37  |xel value.SUB R7|
00000c80  2c 52 37 2c 23 36 34 0a  43 4d 50 20 52 39 2c 23  |,R7,#64.CMP R9,#|
00000c90  30 0a 2f 2a 42 45 51 20  73 6b 69 70 31 30 2a 2f  |0./*BEQ skip10*/|
00000ca0  0a 53 54 52 4e 45 42 20  52 39 2c 5b 52 30 5d 0a  |.STRNEB R9,[R0].|
00000cb0  2e 73 6b 69 70 31 30 0a  41 44 44 20 52 30 2c 52  |.skip10.ADD R0,R|
00000cc0  30 2c 23 33 32 30 0a 0a  2e 64 6f 6e 65 31 39 32  |0,#320...done192|
00000cd0  6c 6f 6f 7a 0a 41 44 44  20 52 31 2c 52 31 2c 23  |looz.ADD R1,R1,#|
00000ce0  36 34 0a 41 44 44 20 52  37 2c 52 37 2c 52 33 20  |64.ADD R7,R7,R3 |
00000cf0  20 20 20 20 20 20 20 20  3b 20 61 64 64 20 73 63  |        ; add sc|
00000d00  61 6c 65 20 6f 6e 74 6f  20 76 65 72 74 2e 20 65  |ale onto vert. e|
00000d10  72 72 6f 72 20 74 65 72  6d 0a 53 55 42 53 20 52  |rror term.SUBS R|
00000d20  38 2c 52 38 2c 23 31 0a  42 4c 4e 45 20 6c 6f 6f  |8,R8,#1.BLNE loo|
00000d30  70 79 31 39 32 6c 6f 6f  7a 20 20 20 20 20 20 20  |py192looz       |
00000d40  20 20 3b 20 6c 6f 6f 70  20 69 66 20 73 6f 0a 2e  |  ; loop if so..|
00000d50  65 6e 64 6f 66 66 75 6e  63 74 69 6f 6e 7a 0a 4c  |endoffunctionz.L|
00000d60  44 4d 46 44 20 52 31 33  21 2c 7b 52 31 2d 52 39  |DMFD R13!,{R1-R9|
00000d70  2c 52 31 35 7d 5e 0a 0a  45 58 50 4f 52 54 20 6f  |,R15}^..EXPORT o|
00000d80  75 72 6c 69 62 5f 62 61  72 5f 70 6c 6f 74 0a 2e  |urlib_bar_plot..|
00000d90  6f 75 72 6c 69 62 5f 62  61 72 5f 70 6c 6f 74 0a  |ourlib_bar_plot.|
00000da0  53 54 4d 46 44 20 52 31  33 21 2c 7b 52 31 2d 52  |STMFD R13!,{R1-R|
00000db0  34 2c 52 31 34 7d 0a 3b  20 52 30 20 3d 20 73 63  |4,R14}.; R0 = sc|
00000dc0  72 65 65 6e 20 52 31 20  3d 20 62 61 72 20 52 32  |reen R1 = bar R2|
00000dd0  20 3d 20 73 74 61 72 74  6f 66 66 73 65 74 0a 4d  | = startoffset.M|
00000de0  4f 56 20 52 33 2c 23 32  35 30 0a 0a 41 44 44 20  |OV R3,#250..ADD |
00000df0  52 30 2c 52 30 2c 52 32  0a 2e 62 61 72 5f 6c 6f  |R0,R0,R2..bar_lo|
00000e00  6f 70 0a 0a 4c 44 52 20  52 32 2c 5b 52 31 5d 2c  |op..LDR R2,[R1],|
00000e10  23 34 0a 53 54 52 20 52  32 2c 5b 52 30 5d 2c 23  |#4.STR R2,[R0],#|
00000e20  34 0a 4c 44 52 20 52 32  2c 5b 52 31 5d 2c 23 34  |4.LDR R2,[R1],#4|
00000e30  0a 53 54 52 20 52 32 2c  5b 52 30 5d 2c 23 34 0a  |.STR R2,[R0],#4.|
00000e40  4c 44 52 20 52 32 2c 5b  52 31 5d 2c 23 34 0a 53  |LDR R2,[R1],#4.S|
00000e50  54 52 20 52 32 2c 5b 52  30 5d 2c 23 34 0a 4c 44  |TR R2,[R0],#4.LD|
00000e60  52 20 52 32 2c 5b 52 31  5d 2c 23 34 0a 53 54 52  |R R2,[R1],#4.STR|
00000e70  20 52 32 2c 5b 52 30 5d  2c 23 34 0a 4c 44 52 20  | R2,[R0],#4.LDR |
00000e80  52 32 2c 5b 52 31 5d 2c  23 34 0a 53 54 52 20 52  |R2,[R1],#4.STR R|
00000e90  32 2c 5b 52 30 5d 2c 23  34 0a 4c 44 52 20 52 32  |2,[R0],#4.LDR R2|
00000ea0  2c 5b 52 31 5d 2c 23 34  0a 53 54 52 20 52 32 2c  |,[R1],#4.STR R2,|
00000eb0  5b 52 30 5d 2c 23 34 0a  4c 44 52 20 52 32 2c 5b  |[R0],#4.LDR R2,[|
00000ec0  52 31 5d 2c 23 34 0a 53  54 52 20 52 32 2c 5b 52  |R1],#4.STR R2,[R|
00000ed0  30 5d 2c 23 34 0a 4c 44  52 20 52 32 2c 5b 52 31  |0],#4.LDR R2,[R1|
00000ee0  5d 2c 23 34 0a 53 54 52  20 52 32 2c 5b 52 30 5d  |],#4.STR R2,[R0]|
00000ef0  2c 23 34 0a 4c 44 52 20  52 32 2c 5b 52 31 5d 2c  |,#4.LDR R2,[R1],|
00000f00  23 34 0a 53 54 52 20 52  32 2c 5b 52 30 5d 2c 23  |#4.STR R2,[R0],#|
00000f10  34 0a 4c 44 52 20 52 32  2c 5b 52 31 5d 2c 23 34  |4.LDR R2,[R1],#4|
00000f20  0a 53 54 52 20 52 32 2c  5b 52 30 5d 2c 23 34 0a  |.STR R2,[R0],#4.|
00000f30  4c 44 52 20 52 32 2c 5b  52 31 5d 2c 23 34 0a 53  |LDR R2,[R1],#4.S|
00000f40  54 52 20 52 32 2c 5b 52  30 5d 2c 23 34 0a 4c 44  |TR R2,[R0],#4.LD|
00000f50  52 20 52 32 2c 5b 52 31  5d 2c 23 34 0a 53 54 52  |R R2,[R1],#4.STR|
00000f60  20 52 32 2c 5b 52 30 5d  2c 23 34 0a 4c 44 52 20  | R2,[R0],#4.LDR |
00000f70  52 32 2c 5b 52 31 5d 2c  23 34 0a 53 54 52 20 52  |R2,[R1],#4.STR R|
00000f80  32 2c 5b 52 30 5d 2c 23  34 0a 4c 44 52 20 52 32  |2,[R0],#4.LDR R2|
00000f90  2c 5b 52 31 5d 2c 23 34  0a 53 54 52 20 52 32 2c  |,[R1],#4.STR R2,|
00000fa0  5b 52 30 5d 2c 23 34 0a  4c 44 52 20 52 32 2c 5b  |[R0],#4.LDR R2,[|
00000fb0  52 31 5d 2c 23 34 0a 53  54 52 20 52 32 2c 5b 52  |R1],#4.STR R2,[R|
00000fc0  30 5d 2c 23 34 0a 4c 44  52 20 52 32 2c 5b 52 31  |0],#4.LDR R2,[R1|
00000fd0  5d 2c 23 34 0a 53 54 52  20 52 32 2c 5b 52 30 5d  |],#4.STR R2,[R0]|
00000fe0  2c 23 34 53 55 42 53 20  52 33 2c 52 33 2c 23 31  |,#4SUBS R3,R3,#1|
00000ff0  0a 42 4e 45 20 62 61 72  5f 6c 6f 6f 70 0a 0a 4c  |.BNE bar_loop..L|
00001000  44 4d 46 44 20 52 31 33  21 2c 7b 52 31 2d 52 34  |DMFD R13!,{R1-R4|
00001010  2c 52 31 35 7d 5e 0a 0a  45 58 50 4f 52 54 20 6f  |,R15}^..EXPORT o|
00001020  75 72 6c 69 62 5f 67 75  6e 5f 70 6c 6f 74 0a 2e  |urlib_gun_plot..|
00001030  6f 75 72 6c 69 62 5f 67  75 6e 5f 70 6c 6f 74 0a  |ourlib_gun_plot.|
00001040  0a 53 54 4d 46 44 20 52  31 33 21 2c 7b 52 31 2d  |.STMFD R13!,{R1-|
00001050  52 31 32 2c 52 31 34 7d  0a 0a 2f 2a 20 52 30 20  |R12,R14}../* R0 |
00001060  3d 20 76 69 64 65 6f 20  52 31 20 3d 67 72 61 70  |= video R1 =grap|
00001070  68 69 63 20 52 32 20 3d  20 77 69 64 74 68 20 52  |hic R2 = width R|
00001080  33 20 3d 68 65 69 67 68  74 20 2a 2f 0a 4d 4f 56  |3 =height */.MOV|
00001090  20 52 35 2c 52 30 0a 0a  2e 79 67 5f 6c 6f 6f 70  | R5,R0...yg_loop|
000010a0  0a 4d 4f 56 20 52 34 2c  52 32 0a 41 44 44 20 52  |.MOV R4,R2.ADD R|
000010b0  30 2c 52 30 2c 23 33 32  30 0a 4d 4f 56 20 52 35  |0,R0,#320.MOV R5|
000010c0  2c 52 30 0a 2e 78 67 5f  6c 6f 6f 70 0a 4c 44 52  |,R0..xg_loop.LDR|
000010d0  42 20 52 36 2c 5b 52 31  5d 2c 23 31 0a 43 4d 50  |B R6,[R1],#1.CMP|
000010e0  20 52 36 2c 23 31 35 31  0a 42 45 51 20 63 6f 6e  | R6,#151.BEQ con|
000010f0  74 0a 53 54 52 42 20 52  36 2c 5b 52 35 5d 0a 2e  |t.STRB R6,[R5]..|
00001100  63 6f 6e 74 0a 41 44 44  20 52 35 2c 52 35 2c 23  |cont.ADD R5,R5,#|
00001110  31 0a 0a 0a 53 55 42 53  20 52 34 2c 52 34 2c 23  |1...SUBS R4,R4,#|
00001120  31 0a 42 4e 45 20 78 67  5f 6c 6f 6f 70 0a 53 55  |1.BNE xg_loop.SU|
00001130  42 53 20 52 33 2c 52 33  2c 23 31 0a 42 4e 45 20  |BS R3,R3,#1.BNE |
00001140  79 67 5f 6c 6f 6f 70 0a  0a 4c 44 4d 46 44 20 52  |yg_loop..LDMFD R|
00001150  31 33 21 2c 7b 52 31 2d  52 31 32 2c 52 31 35 7d  |13!,{R1-R12,R15}|
00001160  0a 0a 0a 45 58 50 4f 52  54 20 6f 75 72 6c 69 62  |...EXPORT ourlib|
00001170  5f 63 68 61 6e 67 65 6d  6f 64 65 0a 2e 6f 75 72  |_changemode..our|
00001180  6c 69 62 5f 63 68 61 6e  67 65 6d 6f 64 65 0a 53  |lib_changemode.S|
00001190  54 4d 46 44 20 52 31 33  21 2c 7b 52 31 2d 52 34  |TMFD R13!,{R1-R4|
000011a0  2c 52 31 34 7d 0a 4d 4f  56 20 52 31 2c 52 30 0a  |,R14}.MOV R1,R0.|
000011b0  4d 4f 56 20 52 30 2c 23  32 32 0a 53 57 49 20 4f  |MOV R0,#22.SWI O|
000011c0  53 5f 57 72 69 74 65 43  0a 4d 4f 56 20 52 30 2c  |S_WriteC.MOV R0,|
000011d0  52 31 0a 53 57 49 20 4f  53 5f 57 72 69 74 65 43  |R1.SWI OS_WriteC|
000011e0  0a 0a 4c 44 4d 46 44 20  52 31 33 21 2c 7b 52 31  |..LDMFD R13!,{R1|
000011f0  2d 52 34 2c 52 31 35 7d  0a 0a 45 58 50 4f 52 54  |-R4,R15}..EXPORT|
00001200  20 6f 75 72 6c 69 62 5f  77 61 69 74 0a 2e 6f 75  | ourlib_wait..ou|
00001210  72 6c 69 62 5f 77 61 69  74 0a 53 54 4d 46 44 20  |rlib_wait.STMFD |
00001220  52 31 33 21 2c 7b 52 31  2d 52 35 2c 52 31 34 7d  |R13!,{R1-R5,R14}|
00001230  0a 4d 4f 56 20 52 33 2c  52 30 20 2f 2a 20 43 6f  |.MOV R3,R0 /* Co|
00001240  70 79 20 76 61 72 69 61  62 6c 65 20 69 6e 74 6f  |py variable into|
00001250  20 73 61 66 65 20 70 6c  61 63 65 20 2a 2f 0a 53  | safe place */.S|
00001260  57 49 20 4f 53 5f 52 65  61 64 4d 6f 6e 6f 74 6f  |WI OS_ReadMonoto|
00001270  6e 69 63 54 69 6d 65 0a  41 44 44 20 52 32 2c 52  |nicTime.ADD R2,R|
00001280  30 2c 52 33 0a 2e 74 69  6d 65 5f 6c 6f 6f 70 0a  |0,R3..time_loop.|
00001290  53 57 49 20 4f 53 5f 52  65 61 64 4d 6f 6e 6f 74  |SWI OS_ReadMonot|
000012a0  6f 6e 69 63 54 69 6d 65  0a 43 4d 50 20 52 30 2c  |onicTime.CMP R0,|
000012b0  52 32 0a 42 4c 45 20 74  69 6d 65 5f 6c 6f 6f 70  |R2.BLE time_loop|
000012c0  0a 4c 44 4d 46 44 20 52  31 33 21 2c 7b 52 31 2d  |.LDMFD R13!,{R1-|
000012d0  52 35 2c 52 31 35 7d 5e  0a 0a 45 58 50 4f 52 54  |R5,R15}^..EXPORT|
000012e0  20 6f 75 72 6c 69 62 5f  63 6c 6f 73 65 64 6f 77  | ourlib_closedow|
000012f0  6e 5f 73 63 72 65 65 6e  73 0a 2e 6f 75 72 6c 69  |n_screens..ourli|
00001300  62 5f 63 6c 6f 73 65 64  6f 77 6e 5f 73 63 72 65  |b_closedown_scre|
00001310  65 6e 73 0a 53 54 4d 46  44 20 52 31 33 21 2c 7b  |ens.STMFD R13!,{|
00001320  52 31 2d 52 34 2c 52 31  34 7d 0a 4d 4f 56 20 52  |R1-R4,R14}.MOV R|
00001330  30 2c 23 31 31 34 0a 4d  4f 56 20 52 31 2c 23 31  |0,#114.MOV R1,#1|
00001340  0a 53 57 49 20 22 4f 53  5f 42 79 74 65 22 0a 4c  |.SWI "OS_Byte".L|
00001350  44 4d 46 44 20 52 31 33  21 2c 7b 52 31 2d 52 34  |DMFD R13!,{R1-R4|
00001360  2c 52 31 35 7d 5e 0a 0a  0a 0a 0a 0a 0a 2e 73 69  |,R15}^........si|
00001370  6d 70 6c 65 6e 75 6d 62  65 72 0a 45 51 55 44 20  |mplenumber.EQUD |
00001380  30 0a 0a 45 58 50 4f 52  54 20 6f 75 72 6c 69 62  |0..EXPORT ourlib|
00001390  5f 73 69 6d 70 6c 65 73  77 69 74 63 68 0a 2e 6f  |_simpleswitch..o|
000013a0  75 72 6c 69 62 5f 73 69  6d 70 6c 65 73 77 69 74  |urlib_simpleswit|
000013b0  63 68 0a 53 54 4d 46 44  20 52 31 33 21 2c 7b 52  |ch.STMFD R13!,{R|
000013c0  31 2d 52 35 2c 52 31 34  7d 0a 4c 44 52 20 52 31  |1-R5,R14}.LDR R1|
000013d0  2c 73 69 6d 70 6c 65 6e  75 6d 62 65 72 0a 4d 4f  |,simplenumber.MO|
000013e0  56 20 52 30 2c 23 31 31  33 0a 4d 4f 56 20 52 34  |V R0,#113.MOV R4|
000013f0  2c 52 31 0a 53 57 49 20  22 4f 53 5f 42 79 74 65  |,R1.SWI "OS_Byte|
00001400  22 0a 4d 56 4e 20 52 31  2c 52 34 0a 53 54 52 20  |".MVN R1,R4.STR |
00001410  52 31 2c 73 69 6d 70 6c  65 6e 75 6d 62 65 72 0a  |R1,simplenumber.|
00001420  4d 4f 56 20 52 30 2c 23  31 31 32 0a 53 57 49 20  |MOV R0,#112.SWI |
00001430  22 4f 53 5f 42 79 74 65  22 0a 4c 44 4d 46 44 20  |"OS_Byte".LDMFD |
00001440  52 31 33 21 2c 7b 52 31  2d 52 35 2c 52 31 35 7d  |R13!,{R1-R5,R15}|
00001450  5e 0a 0a 0a 0a 0a 45 58  50 4f 52 54 20 6f 75 72  |^.....EXPORT our|
00001460  6c 69 62 5f 73 65 74 75  70 5f 73 63 72 65 65 6e  |lib_setup_screen|
00001470  73 0a 2e 6f 75 72 6c 69  62 5f 73 65 74 75 70 5f  |s..ourlib_setup_|
00001480  73 63 72 65 65 6e 73 0a  0a 53 54 4d 46 44 20 52  |screens..STMFD R|
00001490  31 33 21 2c 7b 52 31 2d  52 34 2c 52 31 34 7d 0a  |13!,{R1-R4,R14}.|
000014a0  4d 4f 56 20 52 30 2c 23  31 31 34 0a 4d 4f 56 20  |MOV R0,#114.MOV |
000014b0  52 31 2c 23 30 0a 53 57  49 20 22 4f 53 5f 42 79  |R1,#0.SWI "OS_By|
000014c0  74 65 22 0a 0a 4c 44 4d  46 44 20 52 31 33 21 2c  |te"..LDMFD R13!,|
000014d0  7b 52 31 2d 52 34 2c 52  31 35 7d 5e 0a 0a 45 58  |{R1-R4,R15}^..EX|
000014e0  50 4f 52 54 20 6f 75 72  6c 69 62 5f 6b 69 6c 6c  |PORT ourlib_kill|
000014f0  63 75 72 73 6f 72 0a 2e  6f 75 72 6c 69 62 5f 6b  |cursor..ourlib_k|
00001500  69 6c 6c 63 75 72 73 6f  72 0a 53 54 4d 46 44 20  |illcursor.STMFD |
00001510  52 31 33 21 2c 7b 52 31  2d 52 34 2c 52 31 34 7d  |R13!,{R1-R4,R14}|
00001520  0a 53 57 49 20 22 4f 53  5f 52 65 6d 6f 76 65 43  |.SWI "OS_RemoveC|
00001530  75 72 73 6f 72 73 22 0a  4c 44 4d 46 44 20 52 31  |ursors".LDMFD R1|
00001540  33 21 2c 7b 52 31 2d 52  34 2c 52 31 35 7d 5e 0a  |3!,{R1-R4,R15}^.|
00001550  0a 45 58 50 4f 52 54 20  6f 75 72 6c 69 62 5f 72  |.EXPORT ourlib_r|
00001560  65 76 69 76 65 63 75 72  73 6f 72 0a 2e 6f 75 72  |evivecursor..our|
00001570  6c 69 62 5f 72 65 76 69  76 65 63 75 72 73 6f 72  |lib_revivecursor|
00001580  0a 53 54 4d 46 44 20 52  31 33 21 2c 7b 52 31 2d  |.STMFD R13!,{R1-|
00001590  52 34 2c 52 31 34 7d 0a  53 57 49 20 22 4f 53 5f  |R4,R14}.SWI "OS_|
000015a0  52 65 73 74 6f 72 65 43  75 72 73 6f 72 73 22 0a  |RestoreCursors".|
000015b0  4c 44 4d 46 44 20 52 31  33 21 2c 7b 52 31 2d 52  |LDMFD R13!,{R1-R|
000015c0  34 2c 52 31 35 7d 5e 0a  0a 0a 0a 45 58 50 4f 52  |4,R15}^....EXPOR|
000015d0  54 20 6f 75 72 6c 69 62  5f 73 6c 69 76 65 72 5f  |T ourlib_sliver_|
000015e0  74 77 6f 0a 2e 6f 75 72  6c 69 62 5f 73 6c 69 76  |two..ourlib_sliv|
000015f0  65 72 5f 74 77 6f 0a 53  54 4d 46 44 20 52 31 33  |er_two.STMFD R13|
00001600  21 2c 7b 52 31 2d 52 31  32 2c 52 31 34 7d 0a 4c  |!,{R1-R12,R14}.L|
00001610  44 4d 49 41 20 52 30 2c  7b 52 30 2d 52 36 7d 0a  |DMIA R0,{R0-R6}.|
00001620  0a 43 4d 50 20 52 33 2c  23 32 35 35 0a 4d 4f 56  |.CMP R3,#255.MOV|
00001630  47 45 20 52 33 2c 23 32  35 35 0a 41 44 44 20 52  |GE R3,#255.ADD R|
00001640  31 2c 52 31 2c 52 36 2c  4c 53 4c 20 23 32 0a 41  |1,R1,R6,LSL #2.A|
00001650  44 44 20 52 31 2c 52 31  2c 52 32 0a 4d 4f 56 20  |DD R1,R1,R2.MOV |
00001660  52 38 2c 23 31 32 38 0a  53 55 42 20 52 38 2c 52  |R8,#128.SUB R8,R|
00001670  38 2c 52 33 2c 4c 53 52  20 23 31 0a 41 44 44 20  |8,R3,LSR #1.ADD |
00001680  52 34 2c 52 34 2c 52 38  2c 4c 53 4c 20 23 38 0a  |R4,R4,R8,LSL #8.|
00001690  41 44 44 20 52 34 2c 52  34 2c 52 38 2c 4c 53 4c  |ADD R4,R4,R8,LSL|
000016a0  20 23 36 0a 41 44 44 20  52 30 2c 52 30 2c 52 34  | #6.ADD R0,R0,R4|
000016b0  0a 4d 4f 56 20 52 31 30  2c 23 30 0a 4d 4f 56 20  |.MOV R10,#0.MOV |
000016c0  52 38 2c 52 33 0a 4d 4f  56 20 52 33 2c 52 31 0a  |R8,R3.MOV R3,R1.|
000016d0  2e 6c 6f 6f 6f 70 0a 4c  44 52 42 20 52 39 2c 5b  |.looop.LDRB R9,[|
000016e0  52 31 2c 52 31 30 2c 4c  53 4c 20 23 36 5d 20 20  |R1,R10,LSL #6]  |
000016f0  20 20 20 20 20 3b 20 69  66 20 73 6f 20 6c 6f 61  |     ; if so loa|
00001700  64 20 69 6e 20 70 69 78  65 6c 20 76 61 6c 75 65  |d in pixel value|
00001710  0a 53 54 52 42 20 52 39  2c 5b 52 30 5d 2c 23 33  |.STRB R9,[R0],#3|
00001720  32 30 0a 41 44 44 20 52  31 30 2c 52 31 30 2c 52  |20.ADD R10,R10,R|
00001730  35 0a 4d 4f 56 20 52 31  30 2c 52 31 30 2c 4c 53  |5.MOV R10,R10,LS|
00001740  52 20 23 38 0a 53 55 42  53 20 52 38 2c 52 38 2c  |R #8.SUBS R8,R8,|
00001750  23 31 0a 42 4e 45 20 6c  6f 6f 6f 70 0a 0a 20 4c  |#1.BNE looop.. L|
00001760  44 4d 46 44 20 52 31 33  21 2c 7b 52 30 2d 52 31  |DMFD R13!,{R0-R1|
00001770  32 2c 52 31 35 7d 5e 0a  0a 45 58 50 4f 52 54 20  |2,R15}^..EXPORT |
00001780  6f 75 72 6c 69 62 5f 73  6c 69 76 65 72 0a 2e 6f  |ourlib_sliver..o|
00001790  75 72 6c 69 62 5f 73 6c  69 76 65 72 0a 53 54 4d  |urlib_sliver.STM|
000017a0  46 44 20 52 31 33 21 2c  7b 52 31 2d 52 31 32 2c  |FD R13!,{R1-R12,|
000017b0  52 31 34 7d 0a 4c 44 4d  49 41 20 52 30 2c 7b 52  |R14}.LDMIA R0,{R|
000017c0  30 2d 52 34 7d 0a 0a 43  4d 50 20 52 33 2c 52 32  |0-R4}..CMP R3,R2|
000017d0  0a 4d 4f 56 47 45 20 52  33 2c 52 32 0a 0a 2f 2a  |.MOVGE R3,R2../*|
000017e0  2e 6e 6f 63 6c 69 70 70  69 6e 67 0a 41 44 44 20  |.noclipping.ADD |
000017f0  52 31 2c 52 31 2c 52 36  2c 4c 53 4c 20 23 31 32  |R1,R1,R6,LSL #12|
00001800  20 3b 20 63 61 6c 63 75  6c 61 74 65 20 6f 66 66  | ; calculate off|
00001810  73 65 74 20 69 6e 20 77  61 6c 6c 73 5b 5d 5b 5d  |set in walls[][]|
00001820  20 61 72 72 61 79 0a 41  44 44 20 52 31 2c 52 31  | array.ADD R1,R1|
00001830  2c 52 32 20 20 20 20 20  20 20 20 20 3b 20 61 64  |,R2         ; ad|
00001840  64 20 74 68 65 20 63 6f  6c 75 6d 6e 20 74 6f 20  |d the column to |
00001850  74 68 69 73 0a 2a 2f 0a  0a 4d 4f 56 20 52 38 2c  |this.*/..MOV R8,|
00001860  23 31 32 38 0a 53 55 42  20 52 38 2c 52 38 2c 52  |#128.SUB R8,R8,R|
00001870  33 2c 4c 53 52 20 23 31  20 3b 20 73 65 74 20 73  |3,LSR #1 ; set s|
00001880  74 61 72 74 20 79 20 70  6f 73 0a 41 44 44 20 52  |tart y pos.ADD R|
00001890  34 2c 52 34 2c 52 38 2c  4c 53 4c 20 23 38 20 3b  |4,R4,R8,LSL #8 ;|
000018a0  20 77 6f 72 6b 20 6f 75  74 20 75 73 75 61 6c 20  | work out usual |
000018b0  73 63 72 65 65 6e 20 28  33 32 30 78 32 35 36 29  |screen (320x256)|
000018c0  0a 41 44 44 20 52 34 2c  52 34 2c 52 38 2c 4c 53  |.ADD R4,R4,R8,LS|
000018d0  4c 20 23 36 20 3b 20 6f  66 66 73 65 74 20 74 6f  |L #6 ; offset to|
000018e0  20 62 65 67 69 6e 20 6c  6f 6f 70 0a 41 44 44 20  | begin loop.ADD |
000018f0  52 30 2c 52 30 2c 52 34  0a 0a 4d 4f 56 20 52 38  |R0,R0,R4..MOV R8|
00001900  2c 23 36 34 20 20 20 20  20 20 20 20 3b 20 73 74  |,#64        ; st|
00001910  61 72 74 20 6c 6f 6f 70  20 63 6f 75 6e 74 65 72  |art loop counter|
00001920  0a 4d 4f 56 20 52 37 2c  52 38 0a 0a 43 4d 50 20  |.MOV R7,R8..CMP |
00001930  52 33 2c 23 36 34 0a 42  4c 4c 45 20 6c 6f 6f 70  |R3,#64.BLLE loop|
00001940  79 36 34 6c 6f 6f 0a 43  4d 50 20 52 33 2c 23 31  |y64loo.CMP R3,#1|
00001950  32 37 0a 42 4c 4c 45 20  6c 6f 6f 70 79 31 32 37  |27.BLLE loopy127|
00001960  6c 6f 6f 0a 43 4d 50 20  52 33 2c 23 31 39 31 0a  |loo.CMP R3,#191.|
00001970  42 4c 4c 45 20 6c 6f 6f  70 79 31 39 31 6c 6f 6f  |BLLE loopy191loo|
00001980  0a 42 4c 20 6c 6f 6f 70  79 31 39 32 6c 6f 6f 0a  |.BL loopy192loo.|
00001990  2e 6c 6f 6f 70 79 36 34  6c 6f 6f 0a 2e 64 6f 64  |.loopy64loo..dod|
000019a0  64 6c 65 36 34 0a 43 4d  50 20 52 37 2c 23 36 34  |dle64.CMP R7,#64|
000019b0  0a 42 4c 4c 54 20 64 6f  6e 65 36 34 6c 6f 6f 0a  |.BLLT done64loo.|
000019c0  4c 44 52 42 20 52 39 2c  5b 52 31 5d 20 20 20 20  |LDRB R9,[R1]    |
000019d0  20 20 20 3b 20 69 66 20  73 6f 20 6c 6f 61 64 20  |   ; if so load |
000019e0  69 6e 20 70 69 78 65 6c  20 76 61 6c 75 65 0a 53  |in pixel value.S|
000019f0  54 52 42 20 52 39 2c 5b  52 30 5d 2c 23 33 32 30  |TRB R9,[R0],#320|
00001a00  0a 53 55 42 20 52 37 2c  52 37 2c 23 36 34 0a 2e  |.SUB R7,R7,#64..|
00001a10  64 6f 6e 65 36 34 6c 6f  6f 0a 41 44 44 20 52 31  |done64loo.ADD R1|
00001a20  2c 52 31 2c 23 36 34 0a  41 44 44 20 52 37 2c 52  |,R1,#64.ADD R7,R|
00001a30  37 2c 52 33 20 20 20 20  20 20 20 20 20 3b 20 61  |7,R3         ; a|
00001a40  64 64 20 73 63 61 6c 65  20 6f 6e 74 6f 20 76 65  |dd scale onto ve|
00001a50  72 74 2e 20 65 72 72 6f  72 20 74 65 72 6d 0a 53  |rt. error term.S|
00001a60  55 42 53 20 52 38 2c 52  38 2c 23 31 0a 42 4c 4e  |UBS R8,R8,#1.BLN|
00001a70  45 20 6c 6f 6f 70 79 36  34 6c 6f 6f 20 20 20 20  |E loopy64loo    |
00001a80  20 20 20 20 20 3b 20 6c  6f 6f 70 20 69 66 20 73  |     ; loop if s|
00001a90  6f 0a 0a 4c 44 4d 46 44  20 52 31 33 21 2c 7b 52  |o..LDMFD R13!,{R|
00001aa0  31 2d 52 31 32 2c 52 31  35 7d 5e 0a 2f 2a 4d 4f  |1-R12,R15}^./*MO|
00001ab0  56 53 20 50 43 2c 52 31  34 2a 2f 0a 0a 0a 2e 6c  |VS PC,R14*/....l|
00001ac0  6f 6f 70 79 31 32 37 6c  6f 6f 0a 2e 64 6f 64 64  |oopy127loo..dodd|
00001ad0  6c 65 31 32 37 0a 43 4d  50 20 52 37 2c 23 36 34  |le127.CMP R7,#64|
00001ae0  0a 4c 44 52 42 20 52 39  2c 5b 52 31 5d 20 20 20  |.LDRB R9,[R1]   |
00001af0  20 20 20 20 3b 20 69 66  20 73 6f 20 6c 6f 61 64  |    ; if so load|
00001b00  20 69 6e 20 70 69 78 65  6c 20 76 61 6c 75 65 0a  | in pixel value.|
00001b10  53 54 52 42 20 52 39 2c  5b 52 30 5d 2c 23 33 32  |STRB R9,[R0],#32|
00001b20  30 0a 53 55 42 20 52 37  2c 52 37 2c 23 36 34 0a  |0.SUB R7,R7,#64.|
00001b30  43 4d 50 20 52 37 2c 23  36 34 0a 42 4c 4c 54 20  |CMP R7,#64.BLLT |
00001b40  64 6f 6e 65 31 32 37 6c  6f 6f 0a 4c 44 52 42 20  |done127loo.LDRB |
00001b50  52 39 2c 5b 52 31 5d 20  20 20 20 20 20 20 3b 20  |R9,[R1]       ; |
00001b60  69 66 20 73 6f 20 6c 6f  61 64 20 69 6e 20 70 69  |if so load in pi|
00001b70  78 65 6c 20 76 61 6c 75  65 0a 53 54 52 42 20 52  |xel value.STRB R|
00001b80  39 2c 5b 52 30 5d 2c 23  33 32 30 0a 53 55 42 20  |9,[R0],#320.SUB |
00001b90  52 37 2c 52 37 2c 23 36  34 0a 2e 64 6f 6e 65 31  |R7,R7,#64..done1|
00001ba0  32 37 6c 6f 6f 0a 41 44  44 20 52 31 2c 52 31 2c  |27loo.ADD R1,R1,|
00001bb0  23 36 34 0a 41 44 44 20  52 37 2c 52 37 2c 52 33  |#64.ADD R7,R7,R3|
00001bc0  20 20 20 20 20 20 20 20  20 3b 20 61 64 64 20 73  |         ; add s|
00001bd0  63 61 6c 65 20 6f 6e 74  6f 20 76 65 72 74 2e 20  |cale onto vert. |
00001be0  65 72 72 6f 72 20 74 65  72 6d 0a 53 55 42 53 20  |error term.SUBS |
00001bf0  52 38 2c 52 38 2c 23 31  0a 42 4c 4e 45 20 6c 6f  |R8,R8,#1.BLNE lo|
00001c00  6f 70 79 31 32 37 6c 6f  6f 20 20 20 20 20 20 20  |opy127loo       |
00001c10  20 20 3b 20 6c 6f 6f 70  20 69 66 20 73 6f 0a 4c  |  ; loop if so.L|
00001c20  44 4d 46 44 20 52 31 33  21 2c 7b 52 31 2d 52 31  |DMFD R13!,{R1-R1|
00001c30  32 2c 52 31 35 7d 5e 0a  0a 2f 2a 4d 4f 56 53 20  |2,R15}^../*MOVS |
00001c40  50 43 2c 52 31 34 2a 2f  0a 0a 0a 2e 6c 6f 6f 70  |PC,R14*/....loop|
00001c50  79 31 39 31 6c 6f 6f 0a  2e 64 6f 64 64 6c 65 31  |y191loo..doddle1|
00001c60  39 31 0a 43 4d 50 20 52  37 2c 23 36 34 0a 4c 44  |91.CMP R7,#64.LD|
00001c70  52 42 20 52 39 2c 5b 52  31 5d 20 20 20 20 20 20  |RB R9,[R1]      |
00001c80  20 3b 20 69 66 20 73 6f  20 6c 6f 61 64 20 69 6e  | ; if so load in|
00001c90  20 70 69 78 65 6c 20 76  61 6c 75 65 0a 53 54 52  | pixel value.STR|
00001ca0  42 20 52 39 2c 5b 52 30  5d 2c 23 33 32 30 0a 53  |B R9,[R0],#320.S|
00001cb0  55 42 20 52 37 2c 52 37  2c 23 36 34 0a 43 4d 50  |UB R7,R7,#64.CMP|
00001cc0  20 52 37 2c 23 36 34 0a  4c 44 52 42 20 52 39 2c  | R7,#64.LDRB R9,|
00001cd0  5b 52 31 5d 20 20 20 20  20 20 20 3b 20 69 66 20  |[R1]       ; if |
00001ce0  73 6f 20 6c 6f 61 64 20  69 6e 20 70 69 78 65 6c  |so load in pixel|
00001cf0  20 76 61 6c 75 65 0a 53  54 52 42 20 52 39 2c 5b  | value.STRB R9,[|
00001d00  52 30 5d 2c 23 33 32 30  0a 53 55 42 20 52 37 2c  |R0],#320.SUB R7,|
00001d10  52 37 2c 23 36 34 0a 43  4d 50 20 52 37 2c 23 36  |R7,#64.CMP R7,#6|
00001d20  34 0a 42 4c 54 20 64 6f  6e 65 31 39 31 6c 6f 6f  |4.BLT done191loo|
00001d30  0a 4c 44 52 42 20 52 39  2c 5b 52 31 5d 20 20 20  |.LDRB R9,[R1]   |
00001d40  20 20 20 20 3b 20 69 66  20 73 6f 20 6c 6f 61 64  |    ; if so load|
00001d50  20 69 6e 20 70 69 78 65  6c 20 76 61 6c 75 65 0a  | in pixel value.|
00001d60  53 54 52 42 20 52 39 2c  5b 52 30 5d 2c 23 33 32  |STRB R9,[R0],#32|
00001d70  30 0a 53 55 42 20 52 37  2c 52 37 2c 23 36 34 0a  |0.SUB R7,R7,#64.|
00001d80  2e 64 6f 6e 65 31 39 31  6c 6f 6f 0a 41 44 44 20  |.done191loo.ADD |
00001d90  52 31 2c 52 31 2c 23 36  34 0a 41 44 44 20 52 37  |R1,R1,#64.ADD R7|
00001da0  2c 52 37 2c 52 33 20 20  20 20 20 20 20 20 20 3b  |,R7,R3         ;|
00001db0  20 61 64 64 20 73 63 61  6c 65 20 6f 6e 74 6f 20  | add scale onto |
00001dc0  76 65 72 74 2e 20 65 72  72 6f 72 20 74 65 72 6d  |vert. error term|
00001dd0  0a 53 55 42 53 20 52 38  2c 52 38 2c 23 31 0a 42  |.SUBS R8,R8,#1.B|
00001de0  4c 4e 45 20 6c 6f 6f 70  79 31 39 31 6c 6f 6f 20  |LNE loopy191loo |
00001df0  20 20 20 20 20 20 20 20  3b 20 6c 6f 6f 70 20 69  |        ; loop i|
00001e00  66 20 73 6f 0a 4c 44 4d  46 44 20 52 31 33 21 2c  |f so.LDMFD R13!,|
00001e10  7b 52 31 2d 52 31 32 2c  52 31 35 7d 5e 0a 2f 2a  |{R1-R12,R15}^./*|
00001e20  4d 4f 56 53 20 50 43 2c  52 31 34 2a 2f 0a 0a 0a  |MOVS PC,R14*/...|
00001e30  2e 6c 6f 6f 70 79 31 39  32 6c 6f 6f 0a 2e 64 6f  |.loopy192loo..do|
00001e40  64 64 6c 65 31 39 32 0a  43 4d 50 20 52 37 2c 23  |ddle192.CMP R7,#|
00001e50  36 34 0a 4c 44 52 42 20  52 39 2c 5b 52 31 5d 20  |64.LDRB R9,[R1] |
00001e60  20 20 20 20 20 20 3b 20  69 66 20 73 6f 20 6c 6f  |      ; if so lo|
00001e70  61 64 20 69 6e 20 70 69  78 65 6c 20 76 61 6c 75  |ad in pixel valu|
00001e80  65 0a 53 54 52 42 20 52  39 2c 5b 52 30 5d 2c 23  |e.STRB R9,[R0],#|
00001e90  33 32 30 0a 53 55 42 20  52 37 2c 52 37 2c 23 36  |320.SUB R7,R7,#6|
00001ea0  34 0a 43 4d 50 20 52 37  2c 23 36 34 0a 4c 44 52  |4.CMP R7,#64.LDR|
00001eb0  42 20 52 39 2c 5b 52 31  5d 20 20 20 20 20 20 20  |B R9,[R1]       |
00001ec0  3b 20 69 66 20 73 6f 20  6c 6f 61 64 20 69 6e 20  |; if so load in |
00001ed0  70 69 78 65 6c 20 76 61  6c 75 65 0a 53 54 52 42  |pixel value.STRB|
00001ee0  20 52 39 2c 5b 52 30 5d  2c 23 33 32 30 0a 53 55  | R9,[R0],#320.SU|
00001ef0  42 20 52 37 2c 52 37 2c  23 36 34 0a 43 4d 50 20  |B R7,R7,#64.CMP |
00001f00  52 37 2c 23 36 34 0a 4c  44 52 42 20 52 39 2c 5b  |R7,#64.LDRB R9,[|
00001f10  52 31 5d 20 20 20 20 20  20 20 3b 20 69 66 20 73  |R1]       ; if s|
00001f20  6f 20 6c 6f 61 64 20 69  6e 20 70 69 78 65 6c 20  |o load in pixel |
00001f30  76 61 6c 75 65 0a 53 54  52 42 20 52 39 2c 5b 52  |value.STRB R9,[R|
00001f40  30 5d 2c 23 33 32 30 0a  53 55 42 20 52 37 2c 52  |0],#320.SUB R7,R|
00001f50  37 2c 23 36 34 0a 43 4d  50 20 52 37 2c 23 36 34  |7,#64.CMP R7,#64|
00001f60  0a 42 4c 4c 54 20 64 6f  6e 65 31 39 32 6c 6f 6f  |.BLLT done192loo|
00001f70  0a 4c 44 52 42 20 52 39  2c 5b 52 31 5d 20 20 20  |.LDRB R9,[R1]   |
00001f80  20 20 20 20 3b 20 69 66  20 73 6f 20 6c 6f 61 64  |    ; if so load|
00001f90  20 69 6e 20 70 69 78 65  6c 20 76 61 6c 75 65 0a  | in pixel value.|
00001fa0  53 54 52 42 20 52 39 2c  5b 52 30 5d 2c 23 33 32  |STRB R9,[R0],#32|
00001fb0  30 0a 53 55 42 20 52 37  2c 52 37 2c 23 36 34 0a  |0.SUB R7,R7,#64.|
00001fc0  2e 64 6f 6e 65 31 39 32  6c 6f 6f 0a 41 44 44 20  |.done192loo.ADD |
00001fd0  52 31 2c 52 31 2c 23 36  34 0a 41 44 44 20 52 37  |R1,R1,#64.ADD R7|
00001fe0  2c 52 37 2c 52 33 20 20  20 20 20 20 20 20 20 3b  |,R7,R3         ;|
00001ff0  20 61 64 64 20 73 63 61  6c 65 20 6f 6e 74 6f 20  | add scale onto |
00002000  76 65 72 74 2e 20 65 72  72 6f 72 20 74 65 72 6d  |vert. error term|
00002010  0a 53 55 42 53 20 52 38  2c 52 38 2c 23 31 0a 42  |.SUBS R8,R8,#1.B|
00002020  4c 4e 45 20 6c 6f 6f 70  79 31 39 32 6c 6f 6f 20  |LNE loopy192loo |
00002030  20 20 20 20 20 20 20 20  3b 20 6c 6f 6f 70 20 69  |        ; loop i|
00002040  66 20 73 6f 0a 2e 65 6e  64 6f 66 66 75 6e 63 74  |f so..endoffunct|
00002050  69 6f 6e 0a 4c 44 4d 46  44 20 52 31 33 21 2c 7b  |ion.LDMFD R13!,{|
00002060  52 31 2d 52 31 32 2c 52  31 35 7d 5e 0a 2f 2a 4d  |R1-R12,R15}^./*M|
00002070  4f 56 53 20 50 43 2c 52  31 34 5e 2a 2f 0a 0a 45  |OVS PC,R14^*/..E|
00002080  58 50 4f 52 54 20 6f 75  72 6c 69 62 5f 73 6c 69  |XPORT ourlib_sli|
00002090  76 65 72 78 0a 2e 6f 75  72 6c 69 62 5f 73 6c 69  |verx..ourlib_sli|
000020a0  76 65 72 78 0a 53 54 4d  46 44 20 52 31 33 21 2c  |verx.STMFD R13!,|
000020b0  7b 52 30 2d 52 31 32 2c  52 31 34 7d 0a 4c 44 4d  |{R0-R12,R14}.LDM|
000020c0  49 41 20 52 30 2c 7b 52  30 2d 52 37 7d 0a 4d 4f  |IA R0,{R0-R7}.MO|
000020d0  56 20 52 31 30 2c 23 32  35 36 0a 43 4d 50 20 52  |V R10,#256.CMP R|
000020e0  33 2c 52 35 0a 4d 4f 56  47 45 20 52 33 2c 52 35  |3,R5.MOVGE R3,R5|
000020f0  0a 0a 2e 6e 6f 63 6c 69  70 70 69 6e 67 78 0a 41  |...noclippingx.A|
00002100  44 44 20 52 31 2c 52 31  2c 52 36 2c 4c 53 4c 20  |DD R1,R1,R6,LSL |
00002110  23 31 32 20 3b 20 63 61  6c 63 75 6c 61 74 65 20  |#12 ; calculate |
00002120  6f 66 66 73 65 74 20 69  6e 20 77 61 6c 6c 73 5b  |offset in walls[|
00002130  5d 5b 5d 20 61 72 72 61  79 0a 41 44 44 20 52 31  |][] array.ADD R1|
00002140  2c 52 31 2c 52 32 20 20  20 20 20 20 20 20 20 3b  |,R1,R2         ;|
00002150  20 61 64 64 20 74 68 65  20 63 6f 6c 75 6d 6e 20  | add the column |
00002160  74 6f 20 74 68 69 73 0a  4d 4f 56 20 52 38 2c 23  |to this.MOV R8,#|
00002170  31 30 30 0a 53 55 42 20  52 38 2c 52 38 2c 52 33  |100.SUB R8,R8,R3|
00002180  2c 4c 53 52 20 23 31 20  3b 20 73 65 74 20 73 74  |,LSR #1 ; set st|
00002190  61 72 74 20 79 20 70 6f  73 0a 41 44 44 20 52 34  |art y pos.ADD R4|
000021a0  2c 52 34 2c 52 38 2c 4c  53 4c 20 23 38 20 3b 20  |,R4,R8,LSL #8 ; |
000021b0  77 6f 72 6b 20 6f 75 74  20 75 73 75 61 6c 20 73  |work out usual s|
000021c0  63 72 65 65 6e 20 28 33  32 30 78 32 35 36 29 0a  |creen (320x256).|
000021d0  41 44 44 20 52 34 2c 52  34 2c 52 38 2c 4c 53 4c  |ADD R4,R4,R8,LSL|
000021e0  20 23 36 20 3b 20 6f 66  66 73 65 74 20 74 6f 20  | #6 ; offset to |
000021f0  62 65 67 69 6e 20 6c 6f  6f 70 0a 41 44 44 20 52  |begin loop.ADD R|
00002200  30 2c 52 30 2c 52 34 0a  0a 3b 20 73 65 74 75 70  |0,R0,R4..; setup|
00002210  20 69 6e 63 20 61 6e 64  20 66 69 78 65 64 0a 4d  | inc and fixed.M|
00002220  4f 56 20 52 39 2c 23 30  2c 4c 53 4c 20 23 31 36  |OV R9,#0,LSL #16|
00002230  0a 4d 4f 56 20 52 31 31  2c 23 30 0a 3b 20 52 33  |.MOV R11,#0.; R3|
00002240  20 68 6f 6c 64 73 20 63  6f 75 6e 74 65 72 0a 2e  | holds counter..|
00002250  6c 6f 6f 70 78 78 78 0a  4c 44 52 42 20 52 31 30  |loopxxx.LDRB R10|
00002260  2c 5b 52 31 2c 52 31 31  2c 4c 53 4c 20 23 36 5d  |,[R1,R11,LSL #6]|
00002270  0a 53 54 52 42 20 52 31  30 2c 5b 52 30 5d 2c 23  |.STRB R10,[R0],#|
00002280  33 32 30 0a 41 44 44 20  52 39 2c 52 39 2c 52 37  |320.ADD R9,R9,R7|
00002290  0a 4d 4f 56 20 52 31 31  2c 52 39 2c 4c 53 52 20  |.MOV R11,R9,LSR |
000022a0  23 31 36 0a 0a 3b 65 6e  64 78 78 78 0a 53 55 42  |#16..;endxxx.SUB|
000022b0  53 20 52 33 2c 52 33 2c  23 31 0a 42 4e 45 20 6c  |S R3,R3,#1.BNE l|
000022c0  6f 6f 70 78 78 78 0a 0a  0a 4c 44 4d 46 44 20 52  |oopxxx...LDMFD R|
000022d0  31 33 21 2c 7b 52 30 2d  52 31 32 2c 52 31 35 7d  |13!,{R0-R12,R15}|
000022e0  5e 0a 2f 2a 4d 4f 56 53  20 50 43 2c 52 31 34 5e  |^./*MOVS PC,R14^|
000022f0  2a 2f 0a 0a 45 58 50 4f  52 54 20 6f 75 72 6c 69  |*/..EXPORT ourli|
00002300  62 5f 73 6c 6f 77 63 6c  65 61 72 0a 2e 6f 75 72  |b_slowclear..our|
00002310  6c 69 62 5f 73 6c 6f 77  63 6c 65 61 72 0a 53 54  |lib_slowclear.ST|
00002320  4d 46 44 20 52 31 33 21  2c 7b 52 30 2d 52 35 2c  |MFD R13!,{R0-R5,|
00002330  52 31 34 7d 0a 0a 2e 63  6c 65 61 72 69 6e 67 0a  |R14}...clearing.|
00002340  53 54 52 42 20 52 32 2c  5b 52 30 2c 52 31 5d 0a  |STRB R2,[R0,R1].|
00002350  53 55 42 53 20 52 31 2c  52 31 2c 23 31 0a 42 4e  |SUBS R1,R1,#1.BN|
00002360  45 20 63 6c 65 61 72 69  6e 67 0a 4c 44 4d 46 44  |E clearing.LDMFD|
00002370  20 52 31 33 21 2c 7b 52  30 2d 52 35 2c 52 31 35  | R13!,{R0-R5,R15|
00002380  7d 0a 0a 45 58 50 4f 52  54 20 6f 75 72 6c 69 62  |}..EXPORT ourlib|
00002390  5f 66 61 73 74 63 6c 67  5f 74 77 6f 0a 2e 6f 75  |_fastclg_two..ou|
000023a0  72 6c 69 62 5f 66 61 73  74 63 6c 67 5f 74 77 6f  |rlib_fastclg_two|
000023b0  0a 0a 53 54 4d 46 44 20  52 31 33 21 2c 7b 52 30  |..STMFD R13!,{R0|
000023c0  2d 52 31 32 2c 52 31 34  7d 0a 0a 4d 4f 56 20 52  |-R12,R14}..MOV R|
000023d0  34 2c 23 31 32 38 0a 0a  53 55 42 20 52 34 2c 52  |4,#128..SUB R4,R|
000023e0  34 2c 52 32 2c 41 53 52  20 23 31 0a 41 44 44 20  |4,R2,ASR #1.ADD |
000023f0  52 31 31 2c 52 30 2c 52  34 2c 4c 53 4c 20 23 38  |R11,R0,R4,LSL #8|
00002400  0a 41 44 44 20 52 31 31  2c 52 31 31 2c 52 34 2c  |.ADD R11,R11,R4,|
00002410  4c 53 4c 20 23 36 0a 4d  4f 56 20 52 31 30 2c 52  |LSL #6.MOV R10,R|
00002420  31 31 20 3b 20 73 74 61  72 74 20 6f 66 66 73 65  |11 ; start offse|
00002430  74 20 63 61 6c 63 75 6c  61 74 65 64 0a 4d 4f 56  |t calculated.MOV|
00002440  20 52 39 2c 52 31 0a 0a  4d 4f 56 20 52 31 32 2c  | R9,R1..MOV R12,|
00002450  52 32 2c 4c 53 52 20 23  31 0a 0a 4c 44 52 20 52  |R2,LSR #1..LDR R|
00002460  30 2c 74 6f 70 63 6f 6c  6f 75 72 0a 4d 4f 56 20  |0,topcolour.MOV |
00002470  52 31 2c 52 30 0a 4d 4f  56 20 52 32 2c 52 30 0a  |R1,R0.MOV R2,R0.|
00002480  4d 4f 56 20 52 33 2c 52  30 0a 4d 4f 56 20 52 34  |MOV R3,R0.MOV R4|
00002490  2c 52 30 0a 4d 4f 56 20  52 35 2c 52 30 0a 4d 4f  |,R0.MOV R5,R0.MO|
000024a0  56 20 52 36 2c 52 30 0a  4d 4f 56 20 52 37 2c 52  |V R6,R0.MOV R7,R|
000024b0  30 0a 0a 4d 4f 56 20 52  31 34 2c 52 31 32 0a 2e  |0..MOV R14,R12..|
000024c0  79 5f 6c 6f 6f 70 0a 4d  4f 56 20 52 38 2c 52 39  |y_loop.MOV R8,R9|
000024d0  2c 4c 53 52 20 23 35 0a  2e 78 5f 6c 6f 6f 70 0a  |,LSR #5..x_loop.|
000024e0  0a 53 54 4d 49 41 20 52  31 31 21 2c 7b 52 30 2d  |.STMIA R11!,{R0-|
000024f0  52 37 7d 0a 53 55 42 53  20 52 38 2c 52 38 2c 23  |R7}.SUBS R8,R8,#|
00002500  31 0a 42 4e 45 20 78 5f  6c 6f 6f 70 0a 0a 41 44  |1.BNE x_loop..AD|
00002510  44 20 52 31 30 2c 52 31  30 2c 23 33 32 30 0a 4d  |D R10,R10,#320.M|
00002520  4f 56 20 52 31 31 2c 52  31 30 0a 0a 53 55 42 53  |OV R11,R10..SUBS|
00002530  20 52 31 32 2c 52 31 32  2c 23 31 0a 42 4e 45 20  | R12,R12,#1.BNE |
00002540  79 5f 6c 6f 6f 70 0a 0a  4c 44 52 20 52 30 2c 62  |y_loop..LDR R0,b|
00002550  6f 74 74 6f 6d 63 6f 6c  6f 75 72 0a 4d 4f 56 20  |ottomcolour.MOV |
00002560  52 31 2c 52 30 0a 4d 4f  56 20 52 32 2c 52 30 0a  |R1,R0.MOV R2,R0.|
00002570  4d 4f 56 20 52 33 2c 52  30 0a 4d 4f 56 20 52 34  |MOV R3,R0.MOV R4|
00002580  2c 52 30 0a 4d 4f 56 20  52 35 2c 52 30 0a 4d 4f  |,R0.MOV R5,R0.MO|
00002590  56 20 52 36 2c 52 30 0a  4d 4f 56 20 52 37 2c 52  |V R6,R0.MOV R7,R|
000025a0  30 0a 4d 4f 56 20 52 31  32 2c 52 31 34 0a 2e 79  |0.MOV R12,R14..y|
000025b0  5f 6c 6f 6f 70 62 0a 4d  4f 56 20 52 38 2c 52 39  |_loopb.MOV R8,R9|
000025c0  2c 4c 53 52 20 23 35 0a  2e 78 5f 6c 6f 6f 70 62  |,LSR #5..x_loopb|
000025d0  0a 0a 53 54 4d 49 41 20  52 31 31 21 2c 7b 52 30  |..STMIA R11!,{R0|
000025e0  2d 52 37 7d 0a 53 55 42  53 20 52 38 2c 52 38 2c  |-R7}.SUBS R8,R8,|
000025f0  23 31 0a 42 4e 45 20 78  5f 6c 6f 6f 70 62 0a 0a  |#1.BNE x_loopb..|
00002600  41 44 44 20 52 31 30 2c  52 31 30 2c 23 33 32 30  |ADD R10,R10,#320|
00002610  0a 4d 4f 56 20 52 31 31  2c 52 31 30 0a 0a 53 55  |.MOV R11,R10..SU|
00002620  42 53 20 52 31 32 2c 52  31 32 2c 23 31 0a 42 4e  |BS R12,R12,#1.BN|
00002630  45 20 79 5f 6c 6f 6f 70  62 0a 0a 0a 0a 0a 0a 0a  |E y_loopb.......|
00002640  0a 0a 0a 0a 4c 44 4d 46  44 20 52 31 33 21 2c 7b  |....LDMFD R13!,{|
00002650  52 30 2d 52 31 32 2c 52  31 35 7d 5e 0a 0a 0a 45  |R0-R12,R15}^...E|
00002660  58 50 4f 52 54 20 6f 75  72 6c 69 62 5f 66 61 73  |XPORT ourlib_fas|
00002670  74 63 6c 67 0a 2e 6f 75  72 6c 69 62 5f 66 61 73  |tclg..ourlib_fas|
00002680  74 63 6c 67 0a 53 54 4d  46 44 20 52 31 33 21 2c  |tclg.STMFD R13!,|
00002690  7b 52 31 2d 52 31 32 2c  52 31 34 7d 0a 0a 0a 4d  |{R1-R12,R14}...M|
000026a0  4f 56 20 52 31 31 2c 52  30 0a 0a 0a 4d 4f 56 20  |OV R11,R0...MOV |
000026b0  52 31 30 2c 23 33 32 0a  0a 4c 44 52 20 52 30 2c  |R10,#32..LDR R0,|
000026c0  74 6f 70 63 6f 6c 6f 75  72 0a 4d 4f 56 20 52 30  |topcolour.MOV R0|
000026d0  2c 52 30 0a 4d 4f 56 20  52 31 2c 52 30 0a 4d 4f  |,R0.MOV R1,R0.MO|
000026e0  56 20 52 32 2c 52 30 0a  4d 4f 56 20 52 33 2c 52  |V R2,R0.MOV R3,R|
000026f0  30 0a 4d 4f 56 20 52 34  2c 52 30 0a 4d 4f 56 20  |0.MOV R4,R0.MOV |
00002700  52 35 2c 52 30 0a 4d 4f  56 20 52 36 2c 52 30 0a  |R5,R0.MOV R6,R0.|
00002710  4d 4f 56 20 52 37 2c 52  30 0a 4d 4f 56 20 52 38  |MOV R7,R0.MOV R8|
00002720  2c 52 30 0a 4d 4f 56 20  52 39 2c 52 30 0a 2e 66  |,R0.MOV R9,R0..f|
00002730  61 73 74 0a 53 54 4d 49  41 20 20 52 31 31 21 2c  |ast.STMIA  R11!,|
00002740  7b 52 30 2d 52 39 7d 0a  53 54 4d 49 41 20 20 52  |{R0-R9}.STMIA  R|
00002750  31 31 21 2c 7b 52 30 2d  52 39 7d 0a 53 54 4d 49  |11!,{R0-R9}.STMI|
00002760  41 20 20 52 31 31 21 2c  7b 52 30 2d 52 39 7d 0a  |A  R11!,{R0-R9}.|
00002770  53 54 4d 49 41 20 20 52  31 31 21 2c 7b 52 30 2d  |STMIA  R11!,{R0-|
00002780  52 39 7d 0a 53 54 4d 49  41 20 20 52 31 31 21 2c  |R9}.STMIA  R11!,|
00002790  7b 52 30 2d 52 39 7d 0a  53 54 4d 49 41 20 20 52  |{R0-R9}.STMIA  R|
000027a0  31 31 21 2c 7b 52 30 2d  52 39 7d 0a 53 54 4d 49  |11!,{R0-R9}.STMI|
000027b0  41 20 20 52 31 31 21 2c  7b 52 30 2d 52 39 7d 0a  |A  R11!,{R0-R9}.|
000027c0  53 54 4d 49 41 20 20 52  31 31 21 2c 7b 52 30 2d  |STMIA  R11!,{R0-|
000027d0  52 39 7d 0a 53 54 4d 49  41 20 20 52 31 31 21 2c  |R9}.STMIA  R11!,|
000027e0  7b 52 30 2d 52 39 7d 0a  53 54 4d 49 41 20 20 52  |{R0-R9}.STMIA  R|
000027f0  31 31 21 2c 7b 52 30 2d  52 39 7d 0a 53 54 4d 49  |11!,{R0-R9}.STMI|
00002800  41 20 20 52 31 31 21 2c  7b 52 30 2d 52 39 7d 0a  |A  R11!,{R0-R9}.|
00002810  53 54 4d 49 41 20 20 52  31 31 21 2c 7b 52 30 2d  |STMIA  R11!,{R0-|
00002820  52 39 7d 0a 53 54 4d 49  41 20 20 52 31 31 21 2c  |R9}.STMIA  R11!,|
00002830  7b 52 30 2d 52 39 7d 0a  53 54 4d 49 41 20 20 52  |{R0-R9}.STMIA  R|
00002840  31 31 21 2c 7b 52 30 2d  52 39 7d 0a 53 54 4d 49  |11!,{R0-R9}.STMI|
00002850  41 20 20 52 31 31 21 2c  7b 52 30 2d 52 39 7d 0a  |A  R11!,{R0-R9}.|
00002860  53 54 4d 49 41 20 20 52  31 31 21 2c 7b 52 30 2d  |STMIA  R11!,{R0-|
00002870  52 39 7d 0a 53 54 4d 49  41 20 20 52 31 31 21 2c  |R9}.STMIA  R11!,|
00002880  7b 52 30 2d 52 39 7d 0a  53 54 4d 49 41 20 20 52  |{R0-R9}.STMIA  R|
00002890  31 31 21 2c 7b 52 30 2d  52 39 7d 0a 53 54 4d 49  |11!,{R0-R9}.STMI|
000028a0  41 20 20 52 31 31 21 2c  7b 52 30 2d 52 39 7d 0a  |A  R11!,{R0-R9}.|
000028b0  53 54 4d 49 41 20 20 52  31 31 21 2c 7b 52 30 2d  |STMIA  R11!,{R0-|
000028c0  52 39 7d 0a 53 54 4d 49  41 20 20 52 31 31 21 2c  |R9}.STMIA  R11!,|
000028d0  7b 52 30 2d 52 39 7d 0a  53 54 4d 49 41 20 20 52  |{R0-R9}.STMIA  R|
000028e0  31 31 21 2c 7b 52 30 2d  52 39 7d 0a 53 54 4d 49  |11!,{R0-R9}.STMI|
000028f0  41 20 20 52 31 31 21 2c  7b 52 30 2d 52 39 7d 0a  |A  R11!,{R0-R9}.|
00002900  53 54 4d 49 41 20 20 52  31 31 21 2c 7b 52 30 2d  |STMIA  R11!,{R0-|
00002910  52 39 7d 0a 53 54 4d 49  41 20 20 52 31 31 21 2c  |R9}.STMIA  R11!,|
00002920  7b 52 30 2d 52 39 7d 0a  53 54 4d 49 41 20 20 52  |{R0-R9}.STMIA  R|
00002930  31 31 21 2c 7b 52 30 2d  52 39 7d 0a 53 54 4d 49  |11!,{R0-R9}.STMI|
00002940  41 20 20 52 31 31 21 2c  7b 52 30 2d 52 39 7d 0a  |A  R11!,{R0-R9}.|
00002950  53 54 4d 49 41 20 20 52  31 31 21 2c 7b 52 30 2d  |STMIA  R11!,{R0-|
00002960  52 39 7d 0a 53 54 4d 49  41 20 20 52 31 31 21 2c  |R9}.STMIA  R11!,|
00002970  7b 52 30 2d 52 39 7d 0a  53 54 4d 49 41 20 20 52  |{R0-R9}.STMIA  R|
00002980  31 31 21 2c 7b 52 30 2d  52 39 7d 0a 53 54 4d 49  |11!,{R0-R9}.STMI|
00002990  41 20 20 52 31 31 21 2c  7b 52 30 2d 52 39 7d 0a  |A  R11!,{R0-R9}.|
000029a0  53 54 4d 49 41 20 20 52  31 31 21 2c 7b 52 30 2d  |STMIA  R11!,{R0-|
000029b0  52 39 7d 0a 53 55 42 53  20 20 20 52 31 30 2c 52  |R9}.SUBS   R10,R|
000029c0  31 30 2c 23 31 0a 42 4e  45 20 20 20 20 66 61 73  |10,#1.BNE    fas|
000029d0  74 0a 0a 0a 4d 4f 56 20  52 31 30 2c 23 33 32 0a  |t...MOV R10,#32.|
000029e0  4c 44 52 20 52 31 2c 62  6f 74 74 6f 6d 63 6f 6c  |LDR R1,bottomcol|
000029f0  6f 75 72 0a 4d 4f 56 20  52 30 2c 52 31 0a 4d 4f  |our.MOV R0,R1.MO|
00002a00  56 20 52 32 2c 52 31 0a  4d 4f 56 20 52 33 2c 52  |V R2,R1.MOV R3,R|
00002a10  31 0a 4d 4f 56 20 52 34  2c 52 31 0a 4d 4f 56 20  |1.MOV R4,R1.MOV |
00002a20  52 35 2c 52 31 0a 4d 4f  56 20 52 36 2c 52 31 0a  |R5,R1.MOV R6,R1.|
00002a30  4d 4f 56 20 52 37 2c 52  31 0a 4d 4f 56 20 52 38  |MOV R7,R1.MOV R8|
00002a40  2c 52 31 0a 4d 4f 56 20  52 39 2c 52 31 0a 2e 66  |,R1.MOV R9,R1..f|
00002a50  61 73 74 32 0a 53 54 4d  49 41 20 20 52 31 31 21  |ast2.STMIA  R11!|
00002a60  2c 7b 52 30 2d 52 39 7d  0a 53 54 4d 49 41 20 20  |,{R0-R9}.STMIA  |
00002a70  52 31 31 21 2c 7b 52 30  2d 52 39 7d 0a 53 54 4d  |R11!,{R0-R9}.STM|
00002a80  49 41 20 20 52 31 31 21  2c 7b 52 30 2d 52 39 7d  |IA  R11!,{R0-R9}|
00002a90  0a 53 54 4d 49 41 20 20  52 31 31 21 2c 7b 52 30  |.STMIA  R11!,{R0|
00002aa0  2d 52 39 7d 0a 53 54 4d  49 41 20 20 52 31 31 21  |-R9}.STMIA  R11!|
00002ab0  2c 7b 52 30 2d 52 39 7d  0a 53 54 4d 49 41 20 20  |,{R0-R9}.STMIA  |
00002ac0  52 31 31 21 2c 7b 52 30  2d 52 39 7d 0a 53 54 4d  |R11!,{R0-R9}.STM|
00002ad0  49 41 20 20 52 31 31 21  2c 7b 52 30 2d 52 39 7d  |IA  R11!,{R0-R9}|
00002ae0  0a 53 54 4d 49 41 20 20  52 31 31 21 2c 7b 52 30  |.STMIA  R11!,{R0|
00002af0  2d 52 39 7d 0a 53 54 4d  49 41 20 20 52 31 31 21  |-R9}.STMIA  R11!|
00002b00  2c 7b 52 30 2d 52 39 7d  0a 53 54 4d 49 41 20 20  |,{R0-R9}.STMIA  |
00002b10  52 31 31 21 2c 7b 52 30  2d 52 39 7d 0a 53 54 4d  |R11!,{R0-R9}.STM|
00002b20  49 41 20 20 52 31 31 21  2c 7b 52 30 2d 52 39 7d  |IA  R11!,{R0-R9}|
00002b30  0a 53 54 4d 49 41 20 20  52 31 31 21 2c 7b 52 30  |.STMIA  R11!,{R0|
00002b40  2d 52 39 7d 0a 53 54 4d  49 41 20 20 52 31 31 21  |-R9}.STMIA  R11!|
00002b50  2c 7b 52 30 2d 52 39 7d  0a 53 54 4d 49 41 20 20  |,{R0-R9}.STMIA  |
00002b60  52 31 31 21 2c 7b 52 30  2d 52 39 7d 0a 53 54 4d  |R11!,{R0-R9}.STM|
00002b70  49 41 20 20 52 31 31 21  2c 7b 52 30 2d 52 39 7d  |IA  R11!,{R0-R9}|
00002b80  0a 53 54 4d 49 41 20 20  52 31 31 21 2c 7b 52 30  |.STMIA  R11!,{R0|
00002b90  2d 52 39 7d 0a 53 54 4d  49 41 20 20 52 31 31 21  |-R9}.STMIA  R11!|
00002ba0  2c 7b 52 30 2d 52 39 7d  0a 53 54 4d 49 41 20 20  |,{R0-R9}.STMIA  |
00002bb0  52 31 31 21 2c 7b 52 30  2d 52 39 7d 0a 53 54 4d  |R11!,{R0-R9}.STM|
00002bc0  49 41 20 20 52 31 31 21  2c 7b 52 30 2d 52 39 7d  |IA  R11!,{R0-R9}|
00002bd0  0a 53 54 4d 49 41 20 20  52 31 31 21 2c 7b 52 30  |.STMIA  R11!,{R0|
00002be0  2d 52 39 7d 0a 53 54 4d  49 41 20 20 52 31 31 21  |-R9}.STMIA  R11!|
00002bf0  2c 7b 52 30 2d 52 39 7d  0a 53 54 4d 49 41 20 20  |,{R0-R9}.STMIA  |
00002c00  52 31 31 21 2c 7b 52 30  2d 52 39 7d 0a 53 54 4d  |R11!,{R0-R9}.STM|
00002c10  49 41 20 20 52 31 31 21  2c 7b 52 30 2d 52 39 7d  |IA  R11!,{R0-R9}|
00002c20  0a 53 54 4d 49 41 20 20  52 31 31 21 2c 7b 52 30  |.STMIA  R11!,{R0|
00002c30  2d 52 39 7d 0a 53 54 4d  49 41 20 20 52 31 31 21  |-R9}.STMIA  R11!|
00002c40  2c 7b 52 30 2d 52 39 7d  0a 53 54 4d 49 41 20 20  |,{R0-R9}.STMIA  |
00002c50  52 31 31 21 2c 7b 52 30  2d 52 39 7d 0a 53 54 4d  |R11!,{R0-R9}.STM|
00002c60  49 41 20 20 52 31 31 21  2c 7b 52 30 2d 52 39 7d  |IA  R11!,{R0-R9}|
00002c70  0a 53 54 4d 49 41 20 20  52 31 31 21 2c 7b 52 30  |.STMIA  R11!,{R0|
00002c80  2d 52 39 7d 0a 53 54 4d  49 41 20 20 52 31 31 21  |-R9}.STMIA  R11!|
00002c90  2c 7b 52 30 2d 52 39 7d  0a 53 54 4d 49 41 20 20  |,{R0-R9}.STMIA  |
00002ca0  52 31 31 21 2c 7b 52 30  2d 52 39 7d 0a 53 54 4d  |R11!,{R0-R9}.STM|
00002cb0  49 41 20 20 52 31 31 21  2c 7b 52 30 2d 52 39 7d  |IA  R11!,{R0-R9}|
00002cc0  0a 53 54 4d 49 41 20 20  52 31 31 21 2c 7b 52 30  |.STMIA  R11!,{R0|
00002cd0  2d 52 39 7d 0a 53 55 42  53 20 20 20 52 31 30 2c  |-R9}.SUBS   R10,|
00002ce0  52 31 30 2c 23 31 0a 42  4e 45 20 20 20 20 66 61  |R10,#1.BNE    fa|
00002cf0  73 74 32 0a 4c 44 4d 46  44 20 52 31 33 21 2c 7b  |st2.LDMFD R13!,{|
00002d00  52 31 2d 52 31 32 2c 52  31 35 7d 5e 0a 0a 0a 2e  |R1-R12,R15}^....|
00002d10  74 6f 70 63 6f 6c 6f 75  72 0a 45 51 55 44 20 30  |topcolour.EQUD 0|
00002d20  0a 2e 62 6f 74 74 6f 6d  63 6f 6c 6f 75 72 0a 45  |..bottomcolour.E|
00002d30  51 55 44 20 30 0a 2e 73  63 72 65 65 6e 79 6f 66  |QUD 0..screenyof|
00002d40  66 73 65 74 0a 45 51 55  44 20 30 0a 2e 73 63 72  |fset.EQUD 0..scr|
00002d50  65 65 6e 79 73 74 6f 70  0a 45 51 55 44 20 30 0a  |eenystop.EQUD 0.|
00002d60  2e 73 63 72 65 65 6e 78  6f 66 66 73 65 74 0a 45  |.screenxoffset.E|
00002d70  51 55 44 20 30 0a 2e 73  63 72 65 65 6e 78 73 74  |QUD 0..screenxst|
00002d80  6f 70 0a 45 51 55 44 20  30 0a 0a 0a 0a 0a 45 58  |op.EQUD 0.....EX|
00002d90  50 4f 52 54 20 6f 75 72  6c 69 62 5f 73 65 74 75  |PORT ourlib_setu|
00002da0  70 62 61 63 6b 67 72 6f  75 6e 64 0a 2e 6f 75 72  |pbackground..our|
00002db0  6c 69 62 5f 73 65 74 75  70 5f 62 61 63 6b 67 72  |lib_setup_backgr|
00002dc0  6f 75 6e 64 0a 53 54 4d  46 44 20 52 31 33 21 2c  |ound.STMFD R13!,|
00002dd0  7b 52 31 2d 52 36 2c 52  31 34 7d 0a 2f 2a 4d 4f  |{R1-R6,R14}./*MO|
00002de0  56 20 52 31 30 2c 23 33  32 30 0a 53 55 42 20 52  |V R10,#320.SUB R|
00002df0  39 2c 52 31 30 2c 52 32  2c 4c 53 52 20 23 31 0a  |9,R10,R2,LSR #1.|
00002e00  53 54 52 20 52 39 2c 73  63 72 65 65 6e 78 6f 66  |STR R9,screenxof|
00002e10  66 73 65 74 0a 53 55 42  20 52 39 2c 52 31 30 2c  |fset.SUB R9,R10,|
00002e20  52 39 0a 53 54 52 20 52  39 2c 73 63 72 65 65 6e  |R9.STR R9,screen|
00002e30  78 73 74 6f 70 0a 4d 4f  56 20 52 31 30 2c 23 31  |xstop.MOV R10,#1|
00002e40  32 38 0a 53 55 42 20 52  39 2c 52 31 30 2c 52 33  |28.SUB R9,R10,R3|
00002e50  2c 4c 53 52 20 23 31 0a  53 54 52 20 52 39 2c 73  |,LSR #1.STR R9,s|
00002e60  63 72 65 65 6e 79 6f 66  66 73 65 74 0a 4d 4f 56  |creenyoffset.MOV|
00002e70  20 52 31 30 2c 23 32 35  36 0a 53 55 42 20 52 39  | R10,#256.SUB R9|
00002e80  2c 52 31 30 2c 52 39 0a  53 54 52 20 52 39 2c 73  |,R10,R9.STR R9,s|
00002e90  63 72 65 65 6e 79 73 74  6f 70 2a 2f 0a 0a 4d 4f  |creenystop*/..MO|
00002ea0  56 20 52 33 2c 52 30 0a  4d 4f 56 20 52 34 2c 52  |V R3,R0.MOV R4,R|
00002eb0  31 0a 0a 4f 52 52 20 52  30 2c 52 30 2c 52 33 0a  |1..ORR R0,R0,R3.|
00002ec0  4f 52 52 20 52 30 2c 52  30 2c 52 33 2c 4c 53 4c  |ORR R0,R0,R3,LSL|
00002ed0  20 23 38 0a 4f 52 52 20  52 30 2c 52 30 2c 52 33  | #8.ORR R0,R0,R3|
00002ee0  2c 4c 53 4c 20 23 31 36  0a 4f 52 52 20 52 30 2c  |,LSL #16.ORR R0,|
00002ef0  52 30 2c 52 33 2c 4c 53  4c 20 23 32 34 0a 53 54  |R0,R3,LSL #24.ST|
00002f00  52 20 52 30 2c 74 6f 70  63 6f 6c 6f 75 72 0a 0a  |R R0,topcolour..|
00002f10  4d 4f 56 20 52 30 2c 23  30 0a 4f 52 52 20 52 30  |MOV R0,#0.ORR R0|
00002f20  2c 52 30 2c 52 34 0a 4f  52 52 20 52 30 2c 52 30  |,R0,R4.ORR R0,R0|
00002f30  2c 52 34 2c 4c 53 4c 20  23 38 0a 4f 52 52 20 52  |,R4,LSL #8.ORR R|
00002f40  30 2c 52 30 2c 52 34 2c  4c 53 4c 20 23 31 36 0a  |0,R0,R4,LSL #16.|
00002f50  4f 52 52 20 52 30 2c 52  30 2c 52 34 2c 4c 53 4c  |ORR R0,R0,R4,LSL|
00002f60  20 23 32 34 0a 53 54 52  20 52 30 2c 62 6f 74 74  | #24.STR R0,bott|
00002f70  6f 6d 63 6f 6c 6f 75 72  0a 4c 44 4d 46 44 20 52  |omcolour.LDMFD R|
00002f80  31 33 21 2c 7b 52 31 2d  52 36 2c 52 31 35 7d 5e  |13!,{R1-R6,R15}^|
00002f90  0a 0a 45 58 50 4f 52 54  20 63 6f 6c 6f 75 72 5f  |..EXPORT colour_|
00002fa0  62 6f 78 0a 2e 63 6f 6c  6f 75 72 5f 62 6f 78 0a  |box..colour_box.|
00002fb0  0a 2f 2a 20 52 30 20 3d  20 76 69 64 65 6f 5f 61  |./* R0 = video_a|
00002fc0  64 64 72 65 73 73 20 52  31 3d 20 73 74 61 72 74  |ddress R1= start|
00002fd0  78 20 52 32 20 3d 20 73  74 61 72 74 79 20 52 33  |x R2 = starty R3|
00002fe0  20 3d 20 65 6e 64 78 20  52 34 20 3d 20 65 6e 64  | = endx R4 = end|
00002ff0  79 20 52 35 20 3d 20 63  6f 6c 6f 75 72 2a 2f 0a  |y R5 = colour*/.|
00003000  53 54 4d 46 44 20 52 31  33 21 2c 7b 52 31 2d 52  |STMFD R13!,{R1-R|
00003010  31 30 2c 52 31 34 7d 0a  4c 44 4d 49 41 20 52 30  |10,R14}.LDMIA R0|
00003020  2c 7b 52 30 2d 52 35 7d  0a 0a 4d 4f 56 20 52 36  |,{R0-R5}..MOV R6|
00003030  2c 52 32 0a 0a 2e 6c 6f  6f 70 5f 79 0a 4d 4f 56  |,R2...loop_y.MOV|
00003040  20 52 37 2c 52 31 0a 2e  6c 6f 6f 70 5f 78 0a 41  | R7,R1..loop_x.A|
00003050  44 44 20 52 38 2c 52 37  2c 52 36 2c 4c 53 4c 20  |DD R8,R7,R6,LSL |
00003060  23 38 0a 41 44 44 20 52  38 2c 52 38 2c 52 36 2c  |#8.ADD R8,R8,R6,|
00003070  4c 53 4c 20 23 36 0a 53  54 52 42 20 52 35 2c 5b  |LSL #6.STRB R5,[|
00003080  52 30 2c 52 38 5d 0a 41  44 44 20 52 37 2c 52 37  |R0,R8].ADD R7,R7|
00003090  2c 23 31 0a 43 4d 50 20  52 37 2c 52 33 0a 42 4c  |,#1.CMP R7,R3.BL|
000030a0  54 20 6c 6f 6f 70 5f 78  0a 0a 41 44 44 20 52 36  |T loop_x..ADD R6|
000030b0  2c 52 36 2c 23 31 0a 43  4d 50 20 52 36 2c 52 34  |,R6,#1.CMP R6,R4|
000030c0  0a 42 4c 54 20 6c 6f 6f  70 5f 79 0a 0a 4c 44 4d  |.BLT loop_y..LDM|
000030d0  46 44 20 52 31 33 21 2c  7b 52 31 2d 52 31 30 2c  |FD R13!,{R1-R10,|
000030e0  50 43 7d 0a 0a 0a 0a 0a  0a 0a 45 58 50 4f 52 54  |PC}.......EXPORT|
000030f0  20 6f 75 72 6c 69 62 5f  72 61 79 62 61 63 6b 0a  | ourlib_rayback.|
00003100  2e 6f 75 72 6c 69 62 5f  72 61 79 62 61 63 6b 0a  |.ourlib_rayback.|
00003110  53 54 4d 46 44 20 52 31  33 21 2c 7b 52 31 2d 52  |STMFD R13!,{R1-R|
00003120  31 32 2c 52 31 34 7d 0a  0a 4d 4f 56 20 52 31 32  |12,R14}..MOV R12|
00003130  2c 23 30 30 30 30 30 30  30 30 30 30 30 30 30 30  |,#00000000000000|
00003140  0a 4d 4f 56 20 52 32 2c  23 32 30 34 38 30 0a 0a  |.MOV R2,#20480..|
00003150  2e 72 61 79 62 61 63 6b  6c 6f 6f 70 0a 53 54 52  |.raybackloop.STR|
00003160  20 52 31 32 2c 5b 52 30  2c 23 34 5d 21 0a 53 55  | R12,[R0,#4]!.SU|
00003170  42 53 20 52 32 2c 52 32  20 2c 23 31 0a 42 4e 45  |BS R2,R2 ,#1.BNE|
00003180  20 72 61 79 62 61 63 6b  6c 6f 6f 70 0a 0a 0a 4c  | raybackloop...L|
00003190  44 4d 46 44 20 52 31 33  21 2c 7b 52 31 2d 52 31  |DMFD R13!,{R1-R1|
000031a0  32 2c 52 31 35 7d 5e 0a  0a 45 58 50 4f 52 54 20  |2,R15}^..EXPORT |
000031b0  6f 75 72 6c 69 62 5f 77  61 69 74 76 73 79 6e 63  |ourlib_waitvsync|
000031c0  0a 2e 6f 75 72 6c 69 62  5f 77 61 69 74 76 73 79  |..ourlib_waitvsy|
000031d0  6e 63 0a 53 54 4d 46 44  20 52 31 33 21 2c 7b 52  |nc.STMFD R13!,{R|
000031e0  31 2d 52 32 2c 52 31 34  7d 0a 4d 4f 56 20 52 30  |1-R2,R14}.MOV R0|
000031f0  2c 23 31 39 0a 53 57 49  20 4f 53 5f 42 79 74 65  |,#19.SWI OS_Byte|
00003200  0a 4c 44 4d 46 44 20 52  31 33 21 2c 7b 52 31 2d  |.LDMFD R13!,{R1-|
00003210  52 32 2c 52 31 35 7d 5e  0a 0a 45 58 50 4f 52 54  |R2,R15}^..EXPORT|
00003220  20 6f 75 72 6c 69 62 5f  73 63 72 65 65 6e 5f 72  | ourlib_screen_r|
00003230  6f 74 61 74 65 0a 2e 6f  75 72 6c 69 62 5f 73 63  |otate..ourlib_sc|
00003240  72 65 65 6e 5f 72 6f 74  61 74 65 0a 53 54 4d 46  |reen_rotate.STMF|
00003250  44 20 52 31 33 21 2c 7b  52 31 2d 52 34 2c 52 31  |D R13!,{R1-R4,R1|
00003260  34 7d 0a 4c 44 52 20 52  31 2c 73 63 72 65 65 6e  |4}.LDR R1,screen|
00003270  73 69 7a 65 0a 4c 44 52  20 52 31 2c 73 63 72 65  |size.LDR R1,scre|
00003280  65 6e 73 69 7a 65 0a 2e  72 6f 74 61 74 65 6c 6f  |ensize..rotatelo|
00003290  6f 70 0a 4c 44 52 42 20  52 33 2c 5b 52 30 5d 0a  |op.LDRB R3,[R0].|
000032a0  4d 4f 56 20 52 33 2c 52  33 2c 52 4f 52 20 23 32  |MOV R3,R3,ROR #2|
000032b0  34 0a 53 54 52 42 20 52  33 2c 5b 52 30 5d 2c 23  |4.STRB R3,[R0],#|
000032c0  31 0a 53 55 42 53 20 52  31 2c 52 31 2c 23 31 0a  |1.SUBS R1,R1,#1.|
000032d0  42 4e 45 20 72 6f 74 61  74 65 6c 6f 6f 70 0a 4c  |BNE rotateloop.L|
000032e0  44 4d 46 44 20 52 31 33  21 2c 7b 52 31 2d 52 34  |DMFD R13!,{R1-R4|
000032f0  2c 50 43 7d 0a 2e 73 63  72 65 65 6e 73 69 7a 65  |,PC}..screensize|
00003300  0a 45 51 55 44 20 38 31  39 32 30 0a 0a 0a 0a 0a  |.EQUD 81920.....|
00003310  45 58 50 4f 52 54 20 6f  75 72 6c 69 62 5f 66 61  |EXPORT ourlib_fa|
00003320  64 65 5f 6f 75 74 0a 2e  6f 75 72 6c 69 62 5f 66  |de_out..ourlib_f|
00003330  61 64 65 5f 6f 75 74 0a  53 54 4d 46 44 20 52 31  |ade_out.STMFD R1|
00003340  33 21 2c 7b 52 31 2d 52  37 2c 52 31 34 7d 0a 2f  |3!,{R1-R7,R14}./|
00003350  2a 20 52 30 20 3d 20 76  69 64 65 6f 61 64 64 72  |* R0 = videoaddr|
00003360  65 73 73 20 52 31 20 3d  20 73 63 72 65 65 6e 73  |ess R1 = screens|
00003370  69 7a 65 20 2a 2f 0a 0a  41 44 44 20 52 30 2c 52  |ize */..ADD R0,R|
00003380  30 2c 52 31 20 20 20 20  20 20 20 20 20 3b 20 50  |0,R1         ; P|
00003390  6f 69 6e 74 20 52 30 20  74 6f 20 62 6f 74 74 6f  |oint R0 to botto|
000033a0  6d 20 6f 66 20 73 63 72  65 65 6e 0a 4d 4f 56 20  |m of screen.MOV |
000033b0  52 35 2c 23 38 20 20 20  20 20 20 20 20 20 20 20  |R5,#8           |
000033c0  20 3b 20 4c 6f 6f 70 20  77 69 6c 6c 20 65 78 65  | ; Loop will exe|
000033d0  63 75 74 65 20 20 23 34  20 63 79 63 6c 65 73 0a  |cute  #4 cycles.|
000033e0  2e 6f 75 74 65 72 5f 6c  6f 6f 70 20 20 20 20 20  |.outer_loop     |
000033f0  20 20 20 20 20 3b 20 4f  75 74 65 72 20 6c 6f 6f  |     ; Outer loo|
00003400  70 20 62 65 67 69 6e 73  0a 4d 4f 56 20 52 34 2c  |p begins.MOV R4,|
00003410  52 31 20 20 20 20 20 20  20 20 20 20 20 20 3b 20  |R1            ; |
00003420  4d 6f 76 65 20 73 63 72  65 65 6e 73 69 7a 65 20  |Move screensize |
00003430  69 6e 74 6f 20 74 65 6d  70 20 52 34 0a 2e 66 61  |into temp R4..fa|
00003440  64 65 72 5f 6c 6f 6f 70  20 20 20 20 20 20 20 20  |der_loop        |
00003450  20 20 3b 20 49 6e 6e 65  72 20 6c 6f 6f 70 20 62  |  ; Inner loop b|
00003460  65 67 69 6e 73 0a 53 55  42 20 52 32 2c 52 30 2c  |egins.SUB R2,R0,|
00003470  52 34 20 20 20 20 20 20  20 20 20 3b 20 53 75 62  |R4         ; Sub|
00003480  74 72 61 63 74 20 52 34  20 66 72 6f 6d 20 73 63  |tract R4 from sc|
00003490  72 65 65 6e 20 70 6f 69  6e 74 65 72 0a 4c 44 52  |reen pointer.LDR|
000034a0  42 20 52 33 2c 5b 52 32  5d 20 20 20 20 20 20 20  |B R3,[R2]       |
000034b0  20 20 3b 20 4c 6f 61 64  20 74 68 65 20 76 61 6c  |  ; Load the val|
000034c0  75 65 20 70 6f 69 6e 74  65 64 20 74 6f 0a 4d 4f  |ue pointed to.MO|
000034d0  56 20 52 33 2c 52 33 2c  4c 53 52 20 23 31 20 20  |V R3,R3,LSR #1  |
000034e0  20 20 20 3b 20 53 68 69  66 74 20 28 66 61 64 65  |   ; Shift (fade|
000034f0  29 20 69 74 0a 53 54 52  42 20 52 33 2c 5b 52 32  |) it.STRB R3,[R2|
00003500  5d 20 20 20 20 20 20 20  20 20 3b 20 41 6e 64 20  |]         ; And |
00003510  73 74 6f 72 65 20 69 74  20 62 61 63 6b 20 77 68  |store it back wh|
00003520  65 72 65 20 69 74 20 77  61 73 0a 53 55 42 53 20  |ere it was.SUBS |
00003530  52 34 2c 52 34 2c 23 31  20 20 20 20 20 20 20 20  |R4,R4,#1        |
00003540  3b 20 4d 6f 76 65 20 70  6f 69 6e 74 65 72 20 74  |; Move pointer t|
00003550  6f 20 6e 65 78 74 20 70  69 78 65 6c 0a 42 4e 45  |o next pixel.BNE|
00003560  20 66 61 64 65 72 5f 6c  6f 6f 70 20 20 20 20 20  | fader_loop     |
00003570  20 20 3b 20 4c 6f 6f 70  20 69 66 20 6e 6f 74 20  |  ; Loop if not |
00003580  64 6f 6e 65 20 79 65 74  0a 53 55 42 53 20 52 35  |done yet.SUBS R5|
00003590  2c 52 35 2c 23 31 20 20  20 20 20 20 20 20 3b 20  |,R5,#1        ; |
000035a0  44 65 63 72 65 6d 65 6e  74 20 6f 75 74 65 72 20  |Decrement outer |
000035b0  6c 6f 6f 70 20 63 6f 75  6e 74 65 72 0a 42 4e 45  |loop counter.BNE|
000035c0  20 6f 75 74 65 72 5f 6c  6f 6f 70 20 20 20 20 20  | outer_loop     |
000035d0  20 20 3b 20 4c 6f 6f 70  20 61 67 61 69 6e 20 69  |  ; Loop again i|
000035e0  66 20 69 6e 63 6f 6d 70  6c 65 74 65 0a 4c 44 4d  |f incomplete.LDM|
000035f0  46 44 20 52 31 33 21 2c  7b 52 31 2d 52 37 2c 50  |FD R13!,{R1-R7,P|
00003600  43 7d 5e 0a 0a 45 58 50  4f 52 54 20 6f 75 72 6c  |C}^..EXPORT ourl|
00003610  69 62 5f 63 6f 6c 6f 75  72 73 63 72 65 65 6e 31  |ib_colourscreen1|
00003620  33 0a 2e 6f 75 72 6c 69  62 5f 63 6f 6c 6f 75 72  |3..ourlib_colour|
00003630  73 63 72 65 65 6e 31 33  0a 0a 53 54 4d 46 44 20  |screen13..STMFD |
00003640  52 31 33 21 2c 7b 52 31  2d 52 31 32 2c 52 31 34  |R13!,{R1-R12,R14|
00003650  7d 0a 2f 2a 20 52 30 20  3d 20 76 69 64 65 6f 5f  |}./* R0 = video_|
00003660  61 64 64 72 65 73 73 20  52 31 20 3d 20 70 69 78  |address R1 = pix|
00003670  65 6c 73 20 52 32 20 3d  20 63 6f 6c 6f 75 72 20  |els R2 = colour |
00003680  2a 2f 0a 0a 2e 6c 6f 6f  70 5f 70 69 78 65 6c 0a  |*/...loop_pixel.|
00003690  53 54 52 42 20 52 32 2c  5b 52 30 2c 52 31 5d 0a  |STRB R2,[R0,R1].|
000036a0  53 55 42 53 20 52 31 2c  52 31 2c 23 31 0a 42 4e  |SUBS R1,R1,#1.BN|
000036b0  45 20 6c 6f 6f 70 5f 70  69 78 65 6c 0a 4c 44 4d  |E loop_pixel.LDM|
000036c0  46 44 20 52 31 33 21 2c  7b 52 31 2d 52 31 32 2c  |FD R13!,{R1-R12,|
000036d0  52 31 35 7d 5e 0a 0a 0a  45 58 50 4f 52 54 20 6f  |R15}^...EXPORT o|
000036e0  75 72 6c 69 62 5f 66 69  6e 64 73 63 72 65 65 6e  |urlib_findscreen|
000036f0  0a 2e 6f 75 72 6c 69 62  5f 66 69 6e 64 73 63 72  |..ourlib_findscr|
00003700  65 65 6e 0a 53 54 4d 46  44 20 52 31 33 21 2c 7b  |een.STMFD R13!,{|
00003710  52 31 2d 52 35 2c 52 31  34 7d 0a 41 44 52 20 52  |R1-R5,R14}.ADR R|
00003720  30 2c 53 63 72 65 65 6e  5f 50 61 72 61 6d 73 0a  |0,Screen_Params.|
00003730  41 44 52 20 52 31 2c 53  63 72 65 65 6e 5f 41 64  |ADR R1,Screen_Ad|
00003740  64 72 65 73 73 0a 53 57  49 20 22 4f 53 5f 52 65  |dress.SWI "OS_Re|
00003750  61 64 56 64 75 56 61 72  69 61 62 6c 65 73 22 0a  |adVduVariables".|
00003760  4c 44 52 20 52 30 2c 53  63 72 65 65 6e 5f 41 64  |LDR R0,Screen_Ad|
00003770  64 72 65 73 73 0a 4c 44  4d 46 44 20 52 31 33 21  |dress.LDMFD R13!|
00003780  2c 7b 52 31 2d 52 35 2c  52 31 35 7d 5e 0a 2e 53  |,{R1-R5,R15}^..S|
00003790  63 72 65 65 6e 5f 41 64  64 72 65 73 73 0a 45 51  |creen_Address.EQ|
000037a0  55 44 20 30 3b 0a 2e 53  63 72 65 65 6e 5f 50 61  |UD 0;..Screen_Pa|
000037b0  72 61 6d 73 0a 45 51 55  44 20 31 34 38 3b 0a 45  |rams.EQUD 148;.E|
000037c0  51 55 44 20 2d 31 3b 0a  0a 0a 23 70 72 61 67 6d  |QUD -1;...#pragm|
000037d0  61 20 65 6e 64 61 73 6d  0a 0a 0a 76 6f 69 64 20  |a endasm...void |
000037e0  6f 75 72 6c 69 62 5f 77  72 69 74 65 28 63 68 61  |ourlib_write(cha|
000037f0  72 20 73 74 72 69 6e 67  5b 5d 29 3b 0a 76 6f 69  |r string[]);.voi|
00003800  64 20 6f 75 72 6c 69 62  5f 62 69 74 6d 61 70 5f  |d ourlib_bitmap_|
00003810  70 6c 6f 74 28 69 6e 74  20 73 74 61 72 74 5f 78  |plot(int start_x|
00003820  2c 69 6e 74 20 73 74 61  72 74 5f 79 2c 69 6e 74  |,int start_y,int|
00003830  20 65 6e 64 5f 78 2c 69  6e 74 20 65 6e 64 5f 79  | end_x,int end_y|
00003840  2c 63 68 61 72 20 2a 6d  65 6d 6f 72 79 2c 63 68  |,char *memory,ch|
00003850  61 72 20 2a 76 69 64 65  6f 29 3b 0a 76 6f 69 64  |ar *video);.void|
00003860  20 6f 75 72 6c 69 62 5f  62 69 74 6d 61 70 5f 67  | ourlib_bitmap_g|
00003870  72 61 62 28 69 6e 74 20  73 74 61 72 74 5f 78 2c  |rab(int start_x,|
00003880  69 6e 74 20 73 74 61 72  74 5f 79 2c 69 6e 74 20  |int start_y,int |
00003890  65 6e 64 5f 78 2c 69 6e  74 20 65 6e 64 5f 79 2c  |end_x,int end_y,|
000038a0  63 68 61 72 20 2a 6d 65  6d 6f 72 79 2c 63 68 61  |char *memory,cha|
000038b0  72 20 2a 76 69 64 65 6f  29 3b 0a 0a 0a 76 6f 69  |r *video);...voi|
000038c0  64 20 6f 75 72 6c 69 62  5f 62 69 74 6d 61 70 5f  |d ourlib_bitmap_|
000038d0  67 72 61 62 28 69 6e 74  20 73 74 61 72 74 5f 78  |grab(int start_x|
000038e0  2c 69 6e 74 20 73 74 61  72 74 5f 79 2c 69 6e 74  |,int start_y,int|
000038f0  20 65 6e 64 5f 78 2c 69  6e 74 20 65 6e 64 5f 79  | end_x,int end_y|
00003900  2c 63 68 61 72 20 2a 6d  65 6d 6f 72 79 2c 63 68  |,char *memory,ch|
00003910  61 72 20 2a 76 69 64 65  6f 29 0a 7b 0a 20 20 69  |ar *video).{.  i|
00003920  6e 74 20 6f 66 66 73 65  74 5f 69 6e 5f 6d 65 6d  |nt offset_in_mem|
00003930  6f 72 79 3b 0a 20 20 69  6e 74 20 6f 66 66 73 65  |ory;.  int offse|
00003940  74 5f 69 6e 5f 73 63 72  65 65 6e 3b 0a 20 20 69  |t_in_screen;.  i|
00003950  6e 74 20 70 69 78 65 6c  5f 78 2c 70 69 78 65 6c  |nt pixel_x,pixel|
00003960  5f 79 3b 0a 0a 20 20 66  6f 72 28 6f 66 66 73 65  |_y;..  for(offse|
00003970  74 5f 69 6e 5f 6d 65 6d  6f 72 79 3d 30 2c 70 69  |t_in_memory=0,pi|
00003980  78 65 6c 5f 79 3d 73 74  61 72 74 5f 79 3b 70 69  |xel_y=start_y;pi|
00003990  78 65 6c 5f 79 3c 3d 65  6e 64 5f 79 3b 70 69 78  |xel_y<=end_y;pix|
000039a0  65 6c 5f 79 2b 2b 29 0a  20 20 7b 0a 20 20 20 20  |el_y++).  {.    |
000039b0  66 6f 72 28 70 69 78 65  6c 5f 78 3d 73 74 61 72  |for(pixel_x=star|
000039c0  74 5f 78 3b 70 69 78 65  6c 5f 78 3c 3d 65 6e 64  |t_x;pixel_x<=end|
000039d0  5f 78 3b 70 69 78 65 6c  5f 78 2b 2b 2c 6f 66 66  |_x;pixel_x++,off|
000039e0  73 65 74 5f 69 6e 5f 6d  65 6d 6f 72 79 2b 2b 29  |set_in_memory++)|
000039f0  0a 20 20 20 20 7b 0a 20  20 20 20 20 20 6f 66 66  |.    {.      off|
00003a00  73 65 74 5f 69 6e 5f 73  63 72 65 65 6e 3d 70 69  |set_in_screen=pi|
00003a10  78 65 6c 5f 78 2b 28 70  69 78 65 6c 5f 79 3c 3c  |xel_x+(pixel_y<<|
00003a20  36 29 2b 28 70 69 78 65  6c 5f 79 3c 3c 38 29 3b  |6)+(pixel_y<<8);|
00003a30  0a 20 20 20 20 20 20 6d  65 6d 6f 72 79 5b 6f 66  |.      memory[of|
00003a40  66 73 65 74 5f 69 6e 5f  6d 65 6d 6f 72 79 5d 3d  |fset_in_memory]=|
00003a50  2a 28 76 69 64 65 6f 2b  6f 66 66 73 65 74 5f 69  |*(video+offset_i|
00003a60  6e 5f 73 63 72 65 65 6e  29 3b 0a 0a 20 20 20 20  |n_screen);..    |
00003a70  7d 0a 20 20 7d 0a 0a 7d  0a 76 6f 69 64 20 6f 75  |}.  }..}.void ou|
00003a80  72 6c 69 62 5f 62 69 74  6d 61 70 5f 70 6c 6f 74  |rlib_bitmap_plot|
00003a90  28 69 6e 74 20 73 74 61  72 74 5f 78 2c 69 6e 74  |(int start_x,int|
00003aa0  20 73 74 61 72 74 5f 79  2c 69 6e 74 20 65 6e 64  | start_y,int end|
00003ab0  5f 78 2c 69 6e 74 20 65  6e 64 5f 79 2c 63 68 61  |_x,int end_y,cha|
00003ac0  72 20 2a 6d 65 6d 6f 72  79 2c 63 68 61 72 20 2a  |r *memory,char *|
00003ad0  76 69 64 65 6f 29 0a 7b  0a 20 20 69 6e 74 20 6f  |video).{.  int o|
00003ae0  66 66 73 65 74 5f 69 6e  5f 6d 65 6d 6f 72 79 3b  |ffset_in_memory;|
00003af0  0a 20 20 69 6e 74 20 6f  66 66 73 65 74 5f 69 6e  |.  int offset_in|
00003b00  5f 73 63 72 65 65 6e 3b  0a 20 20 69 6e 74 20 70  |_screen;.  int p|
00003b10  69 78 65 6c 5f 78 2c 70  69 78 65 6c 5f 79 3b 0a  |ixel_x,pixel_y;.|
00003b20  0a 20 20 66 6f 72 28 6f  66 66 73 65 74 5f 69 6e  |.  for(offset_in|
00003b30  5f 6d 65 6d 6f 72 79 3d  30 2c 70 69 78 65 6c 5f  |_memory=0,pixel_|
00003b40  79 3d 73 74 61 72 74 5f  79 3b 70 69 78 65 6c 5f  |y=start_y;pixel_|
00003b50  79 3c 3d 65 6e 64 5f 79  3b 70 69 78 65 6c 5f 79  |y<=end_y;pixel_y|
00003b60  2b 2b 29 0a 20 20 7b 0a  20 20 20 20 66 6f 72 28  |++).  {.    for(|
00003b70  70 69 78 65 6c 5f 78 3d  73 74 61 72 74 5f 78 3b  |pixel_x=start_x;|
00003b80  70 69 78 65 6c 5f 78 3c  3d 65 6e 64 5f 78 3b 70  |pixel_x<=end_x;p|
00003b90  69 78 65 6c 5f 78 2b 2b  2c 6f 66 66 73 65 74 5f  |ixel_x++,offset_|
00003ba0  69 6e 5f 6d 65 6d 6f 72  79 2b 2b 29 0a 20 20 20  |in_memory++).   |
00003bb0  20 7b 0a 20 20 20 20 20  20 6f 66 66 73 65 74 5f  | {.      offset_|
00003bc0  69 6e 5f 73 63 72 65 65  6e 3d 70 69 78 65 6c 5f  |in_screen=pixel_|
00003bd0  78 2b 28 70 69 78 65 6c  5f 79 3c 3c 36 29 2b 28  |x+(pixel_y<<6)+(|
00003be0  70 69 78 65 6c 5f 79 3c  3c 38 29 3b 0a 20 20 20  |pixel_y<<8);.   |
00003bf0  20 20 20 2a 28 76 69 64  65 6f 2b 6f 66 66 73 65  |   *(video+offse|
00003c00  74 5f 69 6e 5f 73 63 72  65 65 6e 29 3d 6d 65 6d  |t_in_screen)=mem|
00003c10  6f 72 79 5b 6f 66 66 73  65 74 5f 69 6e 5f 6d 65  |ory[offset_in_me|
00003c20  6d 6f 72 79 5d 3b 0a 20  20 20 20 7d 0a 20 20 7d  |mory];.    }.  }|
00003c30  0a 7d 0a 76 6f 69 64 20  6f 75 72 6c 69 62 5f 77  |.}.void ourlib_w|
00003c40  72 69 74 65 28 63 68 61  72 20 73 74 72 69 6e 67  |rite(char string|
00003c50  5b 5d 29 0a 7b 0a 20 70  72 69 6e 74 66 28 22 25  |[]).{. printf("%|
00003c60  73 5c 6e 22 2c 73 74 72  69 6e 67 29 3b 0a 7d 0a  |s\n",string);.}.|
00003c70  76 6f 69 64 20 6f 75 72  6c 69 62 5f 62 69 74 6d  |void ourlib_bitm|
00003c80  61 70 5f 73 63 61 6c 65  28 63 68 61 72 20 2a 73  |ap_scale(char *s|
00003c90  63 72 65 65 6e 2c 69 6e  74 20 73 63 72 65 65 6e  |creen,int screen|
00003ca0  78 2c 69 6e 74 20 73 63  72 65 65 6e 79 2c 69 6e  |x,int screeny,in|
00003cb0  74 20 70 65 72 63 65 6e  74 2c 20 69 6e 74 20 77  |t percent, int w|
00003cc0  69 64 74 68 2c 69 6e 74  20 68 65 69 67 68 74 2c  |idth,int height,|
00003cd0  63 68 61 72 20 2a 62 69  74 6d 61 70 29 0a 7b 0a  |char *bitmap).{.|
00003ce0  0a 0a 20 20 20 20 20 20  69 6e 74 20 79 65 72 72  |..      int yerr|
00003cf0  6f 72 3d 30 3b 0a 0a 20  20 20 20 20 20 2f 2a 69  |or=0;..      /*i|
00003d00  6e 74 20 73 63 72 65 65  6e 79 3d 28 32 30 30 2d  |nt screeny=(200-|
00003d10  70 65 72 63 65 6e 74 29  2f 32 3b 2a 2f 0a 69 6e  |percent)/2;*/.in|
00003d20  74 20 78 65 72 72 6f 72  2c 78 3b 0a 0a 0a 20 20  |t xerror,x;...  |
00003d30  20 20 20 20 75 6e 73 69  67 6e 65 64 20 69 6e 74  |    unsigned int|
00003d40  20 73 63 72 70 74 72 3d  73 63 72 65 65 6e 79 2a  | scrptr=screeny*|
00003d50  33 32 30 2b 73 63 72 65  65 6e 78 3b 0a 20 20 20  |320+screenx;.   |
00003d60  20 20 20 75 6e 73 69 67  6e 65 64 20 69 6e 74 20  |   unsigned int |
00003d70  62 69 74 70 74 72 3d 30  3b 0a 0a 20 20 20 20 20  |bitptr=0;..     |
00003d80  20 69 6e 74 20 79 3b 0a  75 6e 73 69 67 6e 65 64  | int y;.unsigned|
00003d90  20 69 6e 74 20 6f 6c 64  5f 73 63 72 70 74 72 3b  | int old_scrptr;|
00003da0  0a 75 6e 73 69 67 6e 65  64 20 69 6e 74 20 6f 6c  |.unsigned int ol|
00003db0  64 5f 62 69 74 70 74 72  3b 0a 20 20 20 20 20 20  |d_bitptr;.      |
00003dc0  66 6f 72 20 28 79 3d 30  3b 20 79 3c 68 65 69 67  |for (y=0; y<heig|
00003dd0  68 74 3b 20 79 2b 2b 29  20 7b 0a 0a 0a 0a 20 20  |ht; y++) {....  |
00003de0  20 20 20 20 20 20 79 65  72 72 6f 72 2b 3d 70 65  |      yerror+=pe|
00003df0  72 63 65 6e 74 3b 0a 0a  0a 0a 20 20 20 20 20 20  |rcent;....      |
00003e00  20 20 77 68 69 6c 65 20  28 79 65 72 72 6f 72 3e  |  while (yerror>|
00003e10  31 30 30 29 20 7b 0a 0a  0a 0a 20 20 20 20 20 20  |100) {....      |
00003e20  20 20 20 20 79 65 72 72  6f 72 2d 3d 31 30 30 3b  |    yerror-=100;|
00003e30  0a 0a 0a 20 20 20 20 20  20 20 20 6f 6c 64 5f 73  |...        old_s|
00003e40  63 72 70 74 72 3d 73 63  72 70 74 72 3b 0a 0a 0a  |crptr=scrptr;...|
00003e50  0a 20 20 20 20 20 20 20  20 20 6f 6c 64 5f 62 69  |.         old_bi|
00003e60  74 70 74 72 3d 62 69 74  70 74 72 3b 0a 0a 0a 0a  |tptr=bitptr;....|
00003e70  20 20 20 20 20 20 20 20  20 20 20 78 65 72 72 6f  |           xerro|
00003e80  72 3d 30 3b 0a 0a 0a 0a  20 20 20 20 20 20 20 20  |r=0;....        |
00003e90  20 20 66 6f 72 20 28 20  78 3d 30 3b 20 78 3c 77  |  for ( x=0; x<w|
00003ea0  69 64 74 68 3b 20 78 2b  2b 29 20 7b 0a 0a 0a 20  |idth; x++) {... |
00003eb0  20 20 20 20 20 20 20 20  20 20 20 78 65 72 72 6f  |           xerro|
00003ec0  72 2b 3d 70 65 72 63 65  6e 74 3b 0a 0a 0a 20 20  |r+=percent;...  |
00003ed0  20 20 20 20 20 20 20 20  20 20 77 68 69 6c 65 20  |          while |
00003ee0  28 78 65 72 72 6f 72 3e  31 30 30 29 20 7b 0a 0a  |(xerror>100) {..|
00003ef0  0a 0a 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |..              |
00003f00  78 65 72 72 6f 72 2d 3d  31 30 30 3b 0a 0a 0a 0a  |xerror-=100;....|
00003f10  20 20 20 20 20 20 20 20  20 20 20 20 20 20 73 63  |              sc|
00003f20  72 65 65 6e 5b 73 63 72  70 74 72 5d 3d 62 69 74  |reen[scrptr]=bit|
00003f30  6d 61 70 5b 62 69 74 70  74 72 5d 3b 0a 0a 0a 20  |map[bitptr];... |
00003f40  20 20 20 20 20 20 20 20  20 20 20 20 20 73 63 72  |             scr|
00003f50  70 74 72 2b 2b 3b 0a 20  20 20 20 20 20 20 20 20  |ptr++;.         |
00003f60  20 20 20 7d 0a 0a 0a 20  20 20 20 20 20 20 20 20  |   }...         |
00003f70  20 20 20 62 69 74 70 74  72 2b 2b 3b 0a 20 20 20  |   bitptr++;.   |
00003f80  20 20 20 20 20 20 20 7d  0a 0a 0a 0a 20 20 20 20  |       }....    |
00003f90  20 20 20 20 20 20 73 63  72 70 74 72 3d 6f 6c 64  |      scrptr=old|
00003fa0  5f 73 63 72 70 74 72 2b  33 32 30 3b 0a 0a 0a 0a  |_scrptr+320;....|
00003fb0  20 20 20 20 20 20 20 20  20 20 62 69 74 70 74 72  |          bitptr|
00003fc0  3d 6f 6c 64 5f 62 69 74  70 74 72 3b 0a 20 20 20  |=old_bitptr;.   |
00003fd0  20 20 20 20 20 7d 0a 0a  0a 0a 20 20 20 20 20 20  |     }....      |
00003fe0  20 20 62 69 74 70 74 72  2b 3d 77 69 64 74 68 3b  |  bitptr+=width;|
00003ff0  0a 20 20 20 20 20 20 7d  0a 0a 0a 0a 20 20 20 20  |.      }....    |
00004000  7d 0a 0a 76 6f 69 64 20  6f 75 72 6c 69 62 5f 73  |}..void ourlib_s|
00004010  63 72 65 65 6e 5f 64 69  73 73 6f 6c 76 65 28 63  |creen_dissolve(c|
00004020  68 61 72 20 2a 73 63 72  65 65 6e 5f 61 64 64 72  |har *screen_addr|
00004030  65 73 73 2c 69 6e 74 20  73 63 72 65 65 6e 5f 73  |ess,int screen_s|
00004040  69 7a 65 29 0a 7b 0a 20  20 69 6e 74 20 6e 75 6d  |ize).{.  int num|
00004050  62 65 72 2c 0a 20 20 63  6f 75 6e 74 65 72 3b 0a  |ber,.  counter;.|
00004060  20 20 66 6c 6f 61 74 20  74 65 6d 70 3b 0a 0a 0a  |  float temp;...|
00004070  20 20 66 6f 72 28 63 6f  75 6e 74 65 72 3d 34 30  |  for(counter=40|
00004080  30 30 30 30 3b 63 6f 75  6e 74 65 72 3e 30 3b 63  |0000;counter>0;c|
00004090  6f 75 6e 74 65 72 2d 2d  29 0a 20 20 7b 0a 20 20  |ounter--).  {.  |
000040a0  20 6e 75 6d 62 65 72 3d  72 61 6e 64 28 29 3b 0a  | number=rand();.|
000040b0  0a 20 20 20 74 65 6d 70  3d 28 66 6c 6f 61 74 29  |.   temp=(float)|
000040c0  6e 75 6d 62 65 72 2f 52  41 4e 44 5f 4d 41 58 3b  |number/RAND_MAX;|
000040d0  0a 20 6e 75 6d 62 65 72  3d 28 66 6c 6f 61 74 29  |. number=(float)|
000040e0  74 65 6d 70 2a 73 63 72  65 65 6e 5f 73 69 7a 65  |temp*screen_size|
000040f0  3b 3b 0a 69 66 28 6e 75  6d 62 65 72 3e 73 63 72  |;;.if(number>scr|
00004100  65 65 6e 5f 73 69 7a 65  29 6e 75 6d 62 65 72 3d  |een_size)number=|
00004110  73 63 72 65 65 6e 5f 73  69 7a 65 3b 0a 0a 20 2a  |screen_size;.. *|
00004120  28 73 63 72 65 65 6e 5f  61 64 64 72 65 73 73 2b  |(screen_address+|
00004130  6e 75 6d 62 65 72 29 3d  30 3b 0a 0a 20 20 7d 0a  |number)=0;..  }.|
00004140  0a 0a 0a 7d 0a 76 6f 69  64 20 6f 75 72 6c 69 62  |...}.void ourlib|
00004150  5f 73 63 72 65 65 6e 5f  73 68 69 66 74 28 63 68  |_screen_shift(ch|
00004160  61 72 20 2a 73 63 72 65  65 6e 5f 61 64 64 72 65  |ar *screen_addre|
00004170  73 73 2c 69 6e 74 20 73  63 72 65 65 6e 5f 73 69  |ss,int screen_si|
00004180  7a 65 29 0a 7b 0a 20 69  6e 74 20 63 6f 75 6e 74  |ze).{. int count|
00004190  65 72 3b 0a 0a 0a 20 20  66 6f 72 28 63 6f 75 6e  |er;...  for(coun|
000041a0  74 65 72 3d 73 63 72 65  65 6e 5f 73 69 7a 65 3b  |ter=screen_size;|
000041b0  63 6f 75 6e 74 65 72 3e  30 3b 63 6f 75 6e 74 65  |counter>0;counte|
000041c0  72 2d 2d 29 0a 20 20 7b  0a 20 2a 28 73 63 72 65  |r--).  {. *(scre|
000041d0  65 6e 5f 61 64 64 72 65  73 73 2b 63 6f 75 6e 74  |en_address+count|
000041e0  65 72 29 3e 3e 3d 31 3b  0a 0a 20 20 7d 0a 0a 0a  |er)>>=1;..  }...|
000041f0  0a 7d 0a 0a 76 6f 69 64  20 6f 75 72 6c 69 62 5f  |.}..void ourlib_|
00004200  73 63 72 65 65 6e 5f 73  77 69 74 63 68 28 63 68  |screen_switch(ch|
00004210  61 72 20 2a 73 63 72 65  65 6e 5f 61 64 64 72 65  |ar *screen_addre|
00004220  73 73 2c 63 68 61 72 20  2a 6d 65 6d 6f 72 79 2c  |ss,char *memory,|
00004230  69 6e 74 20 73 63 72 65  65 6e 5f 73 69 7a 65 29  |int screen_size)|
00004240  0a 7b 0a 20 20 69 6e 74  20 6e 75 6d 62 65 72 2c  |.{.  int number,|
00004250  0a 20 20 63 6f 75 6e 74  65 72 3b 0a 20 20 66 6c  |.  counter;.  fl|
00004260  6f 61 74 20 74 65 6d 70  3b 0a 0a 0a 20 20 66 6f  |oat temp;...  fo|
00004270  72 28 63 6f 75 6e 74 65  72 3d 34 30 30 30 30 30  |r(counter=400000|
00004280  3b 63 6f 75 6e 74 65 72  3e 30 3b 63 6f 75 6e 74  |;counter>0;count|
00004290  65 72 2d 2d 29 0a 20 20  7b 0a 20 20 20 6e 75 6d  |er--).  {.   num|
000042a0  62 65 72 3d 72 61 6e 64  28 29 3b 0a 0a 20 20 20  |ber=rand();..   |
000042b0  74 65 6d 70 3d 28 66 6c  6f 61 74 29 6e 75 6d 62  |temp=(float)numb|
000042c0  65 72 2f 52 41 4e 44 5f  4d 41 58 3b 0a 20 6e 75  |er/RAND_MAX;. nu|
000042d0  6d 62 65 72 3d 28 66 6c  6f 61 74 29 74 65 6d 70  |mber=(float)temp|
000042e0  2a 73 63 72 65 65 6e 5f  73 69 7a 65 3b 3b 0a 69  |*screen_size;;.i|
000042f0  66 28 6e 75 6d 62 65 72  3e 73 63 72 65 65 6e 5f  |f(number>screen_|
00004300  73 69 7a 65 29 6e 75 6d  62 65 72 3d 73 63 72 65  |size)number=scre|
00004310  65 6e 5f 73 69 7a 65 3b  0a 0a 20 2a 28 73 63 72  |en_size;.. *(scr|
00004320  65 65 6e 5f 61 64 64 72  65 73 73 2b 6e 75 6d 62  |een_address+numb|
00004330  65 72 29 3d 2a 28 6d 65  6d 6f 72 79 2b 6e 75 6d  |er)=*(memory+num|
00004340  62 65 72 29 3b 0a 0a 20  20 7d 0a 0a 7d 0a        |ber);..  }..}.|
0000434e