Home » Archimedes archive » Acorn User » AU 1997-07 A.adf » Regulars » info/Hollis/TextureARM

info/Hollis/TextureARM

This website contains an archive of files for the Acorn Electron, BBC Micro, Acorn Archimedes, Commodore 16 and Commodore 64 computers, which Dominic Ford has rescued from his private collection of floppy disks and cassettes.

Some of these files were originally commercial releases in the 1980s and 1990s, but they are now widely available online. I assume that copyright over them is no longer being asserted. If you own the copyright and would like files to be removed, please contact me.

Tape/disk: Home » Archimedes archive » Acorn User » AU 1997-07 A.adf » Regulars
Filename: info/Hollis/TextureARM
Read OK:
File size: 24D2 bytes
Load address: 0000
Exec address: 0000
File contents
 MODE 15+128
 PROCassemble
 PROCinit

 FOR m=1 TO textures
 P. STR$m ") " texture$(m)
 NEXT
 P.
 INPUT "Enter texture number", ref

 IF ref<1  ref=1
 IF ref>textures  ref=textures

 OFF

 sprite_data!0=80*1024
 sprite_data!8=16
 SYS "OS_SpriteOp", 256+9, sprite_data
 SYS "OS_SpriteOp", 256+10, sprite_data, "<Graphics$Dir>.Textures."+texture$(ref)
 SYS "OS_SpriteOp", 256+24, sprite_data, texture$(ref) TO , , addr
 !texture_address=addr+addr!32

 CALLgraphics_init

 viewdist=1024

 xdist=500
 ydist=0
 zdist=1024*2

 xrot=40
 yrot=0
 zrot=30

 xstep=0
 ystep=0
 zstep=4

 REPEAT
 mx=COSRADxrot
 my=COSRADyrot
 mz=COSRADzrot

 nx=SINRADxrot
 ny=SINRADyrot
 nz=SINRADzrot

 PROCrotate_vector(1,0,0,xi,yi,zi)
 PROCrotate_vector(0,1,0,xj,yj,zj)
 PROCrotate_vector(0,0,1,xk,yk,zk)

 xrot+=xstep
 yrot+=ystep
 zrot+=zstep

 vectors!0=xi*256
 vectors!4=xj*256
 vectors!8=xk*256
 vectors!12=yi*256
 vectors!16=yj*256
 vectors!20=yk*256
 vectors!24=zi*256
 vectors!28=zj*256
 vectors!32=zk*256
 vectors!36=xdist
 vectors!40=ydist
 vectors!44=zdist

 CALLgraphics_swap
 CALLgraphics_clear

 A%=vertices
 B%=vertex_data
 CALLtransform

 A%=faces
 B%=vertex_data
 C%=face_data
 CALLredraw

 UNTILFALSE



 DEF PROCassemble
 DIM code 1024*128

 vertex_data=code+1024*4
 face_data=code+1024*8
 trace_data=code+1024*12
 div_data=code+1024*16
 recip_data=code+1024*32
 sprite_data=code+1024*48

 FOR pass=0 TO 2 STEP 2
 P%=code
 [ OPTpass

 .transform
 STMFD R13!, {R14}
 LDR R10, recip_address
 MOV R12,R1
 MOV R14,R0
 .transform_main
 LDMIA R12!, {R3-R5}
\
 ADR R11, vectors
 LDMIA R11!, {R6-R8}
 MUL R0,R3,R6
 MLA R0,R4,R7,R0
 MLA R0,R5,R8,R0
\
 LDMIA R11!, {R6-R8}
 MUL R1,R3,R6
 MLA R1,R4,R7,R1
 MLA R1,R5,R8,R1
\
 LDMIA R11!, {R6-R8}
 MUL R2,R3,R6
 MLA R2,R4,R7,R2
 MLA R2,R5,R8,R2
\
 STMIA R12!, {R0-R2}
 LDMIA R11!, {R3-R5}
 ADD R0,R0,R3,ASL #8
 ADD R1,R1,R4,ASL #8
 ADD R2,R2,R5,ASL #8
\
 MOV R2,R2,ASR #10
 LDR R7, [R10,R2,LSL #2]
 MUL R8,R0,R7
 MOV R0,R8,ASR #10
 MUL R8,R1,R7
 MOV R1,R8,ASR #10
 STMIA R12!, {R0-R1}
\
 SUBS R14,R14,#1
 BGT transform_main
 LDMFD R13!, {R15}



 .redraw_texture
 STMFD R13!, {R10-R12,R14}
 BL transform_view
 LDR R1, ystart
 LDR R5, yend
 LDR R4, trace_address
\
 ADD R5,R5,#128
 ADDS R1,R1,#128
 SUBLT R4,R4,R1,ASL #3
 MOVLT R1,#0
 CMP R5,#256
 MOVGT R5,#256
 SUB R5,R5,R1
 SUB R1,R1,#128
\
 .redraw_texture_main
 LDMIA R4!, {R0,R2}
 BL texture
 ADD R1,R1,#1
 SUBS R5,R5,#1
 BGT redraw_texture_main
 LDMFD R13!, {R10-R12,R15}



 .transform_view
 STMFD R13!, {R14}
 ADR R11, vectors+36
 LDMIA R11!, {R3-R5}
 ADR R11, vectors
 LDMIA R11!, {R6-R8}
 MUL R0,R3,R6
 MUL R1,R3,R7
 MUL R2,R3,R8
\
 LDMIA R11!, {R6-R8}
 MLA R0,R4,R6,R0
 MLA R1,R4,R7,R1
 MLA R2,R4,R8,R2
\
 LDMIA R11!, {R6-R8}
 MLA R0,R5,R6,R0
 MLA R1,R5,R7,R1
 MLA R2,R5,R8,R2
\
 MOV R0,R0,ASR #8
 MOV R1,R1,ASR #8
 MOV R2,R2,ASR #8
\
 ADR R11, vectors+92
 STMIA R11, {R0-R2}
\
 ADR R11, vectors
 LDMIA R11, {R3-R5}
 MOV R3,R3,ASL #1
 MOV R4,R4,ASL #1
 MOV R5,R5,ASL #1
 MUL R3,R2,R3
 MUL R4,R2,R4
\
 ADR R11, vectors+80
 STMIA R11, {R3-R5}
 LDMFD R13!, {R15}



 .texture
 STMFD R13!, {R0-R5,R14}
 MOV R3,R0,ASL #1
 MOV R4,R1,ASL #2
 MOV R5,#1024

 SUB R14,R2,R0

 ADD R0,R0,#320
 RSB R1,R1,#127

 LDR R12, vdu_address
 ADD R12,R12,R1,ASL #9
 ADD R12,R12,R1,ASL #7
 ADD R12,R12,R0


 ADR R11, vectors
 LDMIA R11!, {R6-R8}
 MUL R0,R3,R6
 MUL R1,R3,R7
 MUL R2,R3,R8
\
 LDMIA R11!, {R6-R8}
 MLA R0,R4,R6,R0
 MLA R1,R4,R7,R1
 MLA R2,R4,R8,R2
\
 LDMIA R11!, {R6-R8}
 MLA R0,R5,R6,R0
 MLA R1,R5,R7,R1
 MLA R2,R5,R8,R2
\
 ADR R11, vectors+80
 LDMIA R11, {R3-R8}
 MUL R0,R8,R0
 MUL R1,R8,R1

 MOV R6,R6,ASR #2
 MOV R7,R7,ASR #2
 SUB R6,R6,#128
 ADD R7,R7,#127

 .texture_main
 MOV R10,R2,ASR #8

 LDR R11, div_address
 LDR R10, [R11,R10,LSL #2]
 MOV R8,R10,LSR #16

 MOV R11,R1,ASR #16
 MUL R9,R11,R8
 MOV R11,R0,ASR #16
 MUL R8,R11,R8

 ADD R10,R10,#7+2

 RSB R8,R6,R8,ASR R10
 SUB R9,R7,R9,ASR R10

 LDR R11, texture_address
 ADD R11,R11,R9,ASL #8

 CMP R8,#256
 CMPCC R9,#256
 LDRCCB R10, [R11,R8]
 STRCCB R10, [R12]
 ADD R12,R12,#1
 ADD R0,R0,R3
 ADD R1,R1,R4
 ADD R2,R2,R5
 SUBS R14,R14,#1
 BGT texture_main
 LDMFD R13!, {R0-R5,R15}

 .vectors
 EQUS  STRING$(128,CHR$0)



 .redraw
 STMFD R13!, {R14}
 ADD R10,R1,#24
 MOV R11,R2
 MOV R12,R0
 .redraw_main
 LDR R7, [R11,#0]
 ADD R7,R10,R7,LSL #5
 LDMIA R7, {R0,R1}
 LDR R7, [R11,#4]
 ADD R7,R10,R7,LSL #5
 LDMIA R7, {R2,R3}
 LDR R7, [R11,#8]
 ADD R7,R10,R7,LSL #5
 LDMIA R7, {R4,R5}
 SUB R6,R2,R0
 SUB R7,R3,R1
 SUB R8,R4,R0
 SUB R9,R5,R1
 MUL R9,R6,R9
 MUL R7,R8,R7
 SUBS R7,R7,R9
 BLT hidden
 LDR R7, [R11,#12]
 ADD R7,R10,R7,LSL #5
 LDMIA R7, {R6,R7}
 BL graphics_quad
 LDR R0, [R11,#16]
 BL graphics_draw
 CMP R12,#1
 BLEQ redraw_texture
 .hidden
 ADD R11,R11,#20
 SUBS R12,R12,#1
 BGT redraw_main
 LDMFD R13!, {R15}



 .graphics_draw
 STMFD R13!, {R14}
 LDR R1, ystart
 LDR R5, yend
 LDR R4, trace_address
 ADD R5,R5,#128
 ADDS R1,R1,#128
\
 SUBLT R4,R4,R1,ASL #3
 MOVLT R1,#0
 CMP R5,#256
 MOVGT R5,#256
 SUB R5,R5,R1
\
 RSB R1,R1,#255
 LDR R7, vdu_address
 ADD R7,R7,R1,ASL #9
 ADD R7,R7,R1,ASL #7
 ADD R7,R7,#320
\
 .graphics_draw_main
 LDMIA R4!, {R2,R3}
 SUB R3,R3,R2
 ADD R2,R2,R7
 .graphics_draw_pixel
 STRB R0, [R2],#1
 SUBS R3,R3,#1
 BGT graphics_draw_pixel
 SUB R7,R7,#640
 SUBS R5,R5,#1
 BGT graphics_draw_main
 LDMFD R13!, {R15}


 .graphics_init
 STMFD R13!, {R14}
 MOV R0,#1
 STR R0, bank
 BL graphics_swap
 ADR R0, vdu_data
 ADR R1, bank1
 SWI "OS_ReadVduVariables"
 LDMFD R13!, {R15}


 .vdu_data
 EQUD 148
 EQUD 149
 EQUD -1

 .bank1  EQUD 0
 .bank2  EQUD 0
 .bank    EQUD 0


 .graphics_swap
 STMFD R13!, {R14}
 MOV R0,#19
 SWI "OS_Byte"

 LDR R1, bank
 EOR R7,R1,#3
 STR R7, bank
 CMP R1,#1
 LDREQ R0, bank1
 LDRNE R0, bank2
 STR R0, vdu_address

 MOV R0,#112
 SWI "OS_Byte"

 MOV R0,#113
 MOV R1,R7
 SWI "OS_Byte"
 LDMFD R13!, {R15}


 .graphics_clear
 STMFD R13!, {R14}
 MOV R0,#0
 MOV R1,#0
 MOV R2,#0
 MOV R3,#0
 MOV R4,#0
 MOV R5,#0
 MOV R6,#0
 MOV R7,#0
 MOV R8,#0
 MOV R9,#0
 LDR R11, vdu_address
 MOV R12,#1024
 .graphics_clear_main
 STMIA R11!, {R0-R9}
 STMIA R11!, {R0-R9}
 STMIA R11!, {R0-R9}
 STMIA R11!, {R0-R9}
 SUBS R12,R12,#1
 BGT graphics_clear_main
 LDMFD R13!, {R15}


 
 .graphics_quad
 STMFD R13!, {R10-R12,R14}
 MOV R0,R0,ASR #7
 MOV R1,R1,ASR #8
 MOV R2,R2,ASR #7
 MOV R3,R3,ASR #8
 MOV R4,R4,ASR #7
 MOV R5,R5,ASR #8
 MOV R6,R6,ASR #7
 MOV R7,R7,ASR #8
\
 SUBS R11,R3,R1
 MOVLT R3,R1
 ADDLT R1,R1,R11
 MOVLT R11,R2
 MOVLT R2,R0
 MOVLT R0,R11
\
 SUBS R11,R7,R5
 MOVLT R7,R5
 ADDLT R5,R5,R11
 MOVLT R11,R6
 MOVLT R6,R4
 MOVLT R4,R11
\
 SUBS R11,R5,R1
 MOVLT R5,R1
 ADDLT R1,R1,R11
 MOVLT R11,R4
 MOVLT R4,R0
 MOVLT R0,R11
\
 SUBS R11,R7,R3
 MOVLT R7,R3
 ADDLT R3,R3,R11
 MOVLT R11,R6
 MOVLT R6,R2
 MOVLT R2,R11
\
 SUBS R11,R5,R3
 MOVLT R5,R3
 ADDLT R3,R3,R11
 MOVLT R11,R4
 MOVLT R4,R2
 MOVLT R2,R11
\
 STR R1, ystart
 STR R7, yend
\
 SUB R8,R6,R0
 SUB R9,R7,R1
 SUB R10,R2,R0
 SUB R11,R3,R1
\
 MUL R12,R8,R11
 MUL R14,R10,R9
 SUB R12,R12,R14
\
 SUB R10,R4,R0
 SUB R11,R5,R1
\
 MUL R11,R8,R11
 MUL R14,R10,R9
 SUB R11,R11,R14
\
 CMP R12,#0
 LDR R10, trace_address
 ADDLT R8,R10,#4
 ADDLT R9,R10,#0
 ADDGE R8,R10,#0
 ADDGE R9,R10,#4
 STMFD R13!, {R9}
 EOR R11,R11,R12
 CMP R11,#0
 BLT graphics_quad22


 .graphics_quad21
 MOV R10,R0
 SUB R11,R2,R0
 SUBS R12,R3,R1
 BLGT graphics_trace
 MOV R10,R2
 SUB R11,R4,R2
 SUBS R12,R5,R3
 BLGT graphics_trace
 MOV R10,R4
 SUB R11,R6,R4
 SUBS R12,R7,R5
 BLGT graphics_trace
 LDMFD R13!, {R8}
 MOV R10,R0
 SUB R11,R6,R0
 SUBS R12,R7,R1
 BLGT graphics_trace
 LDMFD R13!, {R10-R12,R15}


 .graphics_quad22
 MOV R10,R0
 SUB R11,R2,R0
 SUBS R12,R3,R1
 BLGT graphics_trace
 MOV R10,R2
 SUB R11,R6,R2
 SUBS R12,R7,R3
 BLGT graphics_trace
 LDMFD R13!, {R8}
 MOV R10,R0
 SUB R11,R4,R0
 SUBS R12,R5,R1
 BLGT graphics_trace
 MOV R10,R4
 SUB R11,R6,R4
 SUBS R12,R7,R5
 BLGT graphics_trace
 LDMFD R13!, {R10-R12,R15}



 .graphics_trace
 LDR R9, recip_address
 LDR R9, [R9,R12,LSL #2]
 MUL R11,R9,R11
 MOV R10,R10,ASL #16
 ADD R10,R10,R11,ASR #1
 .graphics_trace_main
 MOV R9,R10,ASR #16
 ADD R10,R10,R11
 CMP R9,#320
 MOVGT R9,#320
 SUBGT R9,R9,#1
 CMN R9,#320
 MOVLT R9,#0
 SUBLT R9,R9,#320
 STR R9, [R8],#8
 SUBS R12,R12,#1
 BGT graphics_trace_main
 MOV R15,R14



 .ystart    EQUD 0
 .yend     EQUD 0

 .vdu_address         EQUD  0
 .texture_address    EQUD  0
 .trace_address      EQUD  trace_data
 .div_address         EQUD  div_data
 .recip_address      EQUD  recip_data
 
 ] NEXTpass
 ENDPROC



 DEF PROCinit

 DIM texture$(20)
 m=0
 REPEAT
     m+=1
     READ m$
     texture$(m)=m$
 UNTIL m$=""
 textures=m-1

 DATA "acorn", "arrow", "funkydraw", "stone"
 DATA ""


 vertices=8
 faces=6

 d=0
 FOR m=1 TO 4*1024-1
 IF m>(2^d)  d+=1
 mant=(1<<(15+d))/m
 !(div_data+m*4)=(mant<<16) OR d
 NEXT

 FOR m=1 TO 4*1024-1
 !(recip_data+m*4)=2^16/m
 NEXT

 m=vertex_data
 FOR n=0 TO vertices-1
 READ x,y,z
 m!0=x
 m!4=y
 m!8=z
 m+=32
 NEXT

 m=face_data
 FOR n=0 TO faces-1
 READ m0,m1,m2,m3,colour
 m!0=m0
 m!4=m1
 m!8=m2
 m!12=m3
 m!16=colour
 m+=20
 NEXT
 ENDPROC


 DATA -512,   512, 0
 DATA   512,   512, 0
 DATA   512, -512, 0
 DATA -512, -512, 0

 DATA -512,   512, 256
 DATA   512,   512, 256
 DATA   512, -512, 256
 DATA -512, -512, 256


 DATA 4,5,1,0,20
 DATA 6,7,3,2,20

 DATA 5,6,2,1,18
 DATA 7,4,0,3,18

 DATA 7,6,5,4,16
 DATA 0,1,2,3,16



 DEF PROCrotate_vector(x, y, z, RETURN x, RETURN y, RETURN z)
 x0=x*mz-y*nz
 y0=x*nz+y*mz

 z0=z*my-x0*ny
 x=z*ny+x0*my

 y=y0*mx-z0*nx
 z=y0*nx+z0*mx
 ENDPROC
00000000  20 4d 4f 44 45 20 31 35  2b 31 32 38 0a 20 50 52  | MODE 15+128. PR|
00000010  4f 43 61 73 73 65 6d 62  6c 65 0a 20 50 52 4f 43  |OCassemble. PROC|
00000020  69 6e 69 74 0a 0a 20 46  4f 52 20 6d 3d 31 20 54  |init.. FOR m=1 T|
00000030  4f 20 74 65 78 74 75 72  65 73 0a 20 50 2e 20 53  |O textures. P. S|
00000040  54 52 24 6d 20 22 29 20  22 20 74 65 78 74 75 72  |TR$m ") " textur|
00000050  65 24 28 6d 29 0a 20 4e  45 58 54 0a 20 50 2e 0a  |e$(m). NEXT. P..|
00000060  20 49 4e 50 55 54 20 22  45 6e 74 65 72 20 74 65  | INPUT "Enter te|
00000070  78 74 75 72 65 20 6e 75  6d 62 65 72 22 2c 20 72  |xture number", r|
00000080  65 66 0a 0a 20 49 46 20  72 65 66 3c 31 20 20 72  |ef.. IF ref<1  r|
00000090  65 66 3d 31 0a 20 49 46  20 72 65 66 3e 74 65 78  |ef=1. IF ref>tex|
000000a0  74 75 72 65 73 20 20 72  65 66 3d 74 65 78 74 75  |tures  ref=textu|
000000b0  72 65 73 0a 0a 20 4f 46  46 0a 0a 20 73 70 72 69  |res.. OFF.. spri|
000000c0  74 65 5f 64 61 74 61 21  30 3d 38 30 2a 31 30 32  |te_data!0=80*102|
000000d0  34 0a 20 73 70 72 69 74  65 5f 64 61 74 61 21 38  |4. sprite_data!8|
000000e0  3d 31 36 0a 20 53 59 53  20 22 4f 53 5f 53 70 72  |=16. SYS "OS_Spr|
000000f0  69 74 65 4f 70 22 2c 20  32 35 36 2b 39 2c 20 73  |iteOp", 256+9, s|
00000100  70 72 69 74 65 5f 64 61  74 61 0a 20 53 59 53 20  |prite_data. SYS |
00000110  22 4f 53 5f 53 70 72 69  74 65 4f 70 22 2c 20 32  |"OS_SpriteOp", 2|
00000120  35 36 2b 31 30 2c 20 73  70 72 69 74 65 5f 64 61  |56+10, sprite_da|
00000130  74 61 2c 20 22 3c 47 72  61 70 68 69 63 73 24 44  |ta, "<Graphics$D|
00000140  69 72 3e 2e 54 65 78 74  75 72 65 73 2e 22 2b 74  |ir>.Textures."+t|
00000150  65 78 74 75 72 65 24 28  72 65 66 29 0a 20 53 59  |exture$(ref). SY|
00000160  53 20 22 4f 53 5f 53 70  72 69 74 65 4f 70 22 2c  |S "OS_SpriteOp",|
00000170  20 32 35 36 2b 32 34 2c  20 73 70 72 69 74 65 5f  | 256+24, sprite_|
00000180  64 61 74 61 2c 20 74 65  78 74 75 72 65 24 28 72  |data, texture$(r|
00000190  65 66 29 20 54 4f 20 2c  20 2c 20 61 64 64 72 0a  |ef) TO , , addr.|
000001a0  20 21 74 65 78 74 75 72  65 5f 61 64 64 72 65 73  | !texture_addres|
000001b0  73 3d 61 64 64 72 2b 61  64 64 72 21 33 32 0a 0a  |s=addr+addr!32..|
000001c0  20 43 41 4c 4c 67 72 61  70 68 69 63 73 5f 69 6e  | CALLgraphics_in|
000001d0  69 74 0a 0a 20 76 69 65  77 64 69 73 74 3d 31 30  |it.. viewdist=10|
000001e0  32 34 0a 0a 20 78 64 69  73 74 3d 35 30 30 0a 20  |24.. xdist=500. |
000001f0  79 64 69 73 74 3d 30 0a  20 7a 64 69 73 74 3d 31  |ydist=0. zdist=1|
00000200  30 32 34 2a 32 0a 0a 20  78 72 6f 74 3d 34 30 0a  |024*2.. xrot=40.|
00000210  20 79 72 6f 74 3d 30 0a  20 7a 72 6f 74 3d 33 30  | yrot=0. zrot=30|
00000220  0a 0a 20 78 73 74 65 70  3d 30 0a 20 79 73 74 65  |.. xstep=0. yste|
00000230  70 3d 30 0a 20 7a 73 74  65 70 3d 34 0a 0a 20 52  |p=0. zstep=4.. R|
00000240  45 50 45 41 54 0a 20 6d  78 3d 43 4f 53 52 41 44  |EPEAT. mx=COSRAD|
00000250  78 72 6f 74 0a 20 6d 79  3d 43 4f 53 52 41 44 79  |xrot. my=COSRADy|
00000260  72 6f 74 0a 20 6d 7a 3d  43 4f 53 52 41 44 7a 72  |rot. mz=COSRADzr|
00000270  6f 74 0a 0a 20 6e 78 3d  53 49 4e 52 41 44 78 72  |ot.. nx=SINRADxr|
00000280  6f 74 0a 20 6e 79 3d 53  49 4e 52 41 44 79 72 6f  |ot. ny=SINRADyro|
00000290  74 0a 20 6e 7a 3d 53 49  4e 52 41 44 7a 72 6f 74  |t. nz=SINRADzrot|
000002a0  0a 0a 20 50 52 4f 43 72  6f 74 61 74 65 5f 76 65  |.. PROCrotate_ve|
000002b0  63 74 6f 72 28 31 2c 30  2c 30 2c 78 69 2c 79 69  |ctor(1,0,0,xi,yi|
000002c0  2c 7a 69 29 0a 20 50 52  4f 43 72 6f 74 61 74 65  |,zi). PROCrotate|
000002d0  5f 76 65 63 74 6f 72 28  30 2c 31 2c 30 2c 78 6a  |_vector(0,1,0,xj|
000002e0  2c 79 6a 2c 7a 6a 29 0a  20 50 52 4f 43 72 6f 74  |,yj,zj). PROCrot|
000002f0  61 74 65 5f 76 65 63 74  6f 72 28 30 2c 30 2c 31  |ate_vector(0,0,1|
00000300  2c 78 6b 2c 79 6b 2c 7a  6b 29 0a 0a 20 78 72 6f  |,xk,yk,zk).. xro|
00000310  74 2b 3d 78 73 74 65 70  0a 20 79 72 6f 74 2b 3d  |t+=xstep. yrot+=|
00000320  79 73 74 65 70 0a 20 7a  72 6f 74 2b 3d 7a 73 74  |ystep. zrot+=zst|
00000330  65 70 0a 0a 20 76 65 63  74 6f 72 73 21 30 3d 78  |ep.. vectors!0=x|
00000340  69 2a 32 35 36 0a 20 76  65 63 74 6f 72 73 21 34  |i*256. vectors!4|
00000350  3d 78 6a 2a 32 35 36 0a  20 76 65 63 74 6f 72 73  |=xj*256. vectors|
00000360  21 38 3d 78 6b 2a 32 35  36 0a 20 76 65 63 74 6f  |!8=xk*256. vecto|
00000370  72 73 21 31 32 3d 79 69  2a 32 35 36 0a 20 76 65  |rs!12=yi*256. ve|
00000380  63 74 6f 72 73 21 31 36  3d 79 6a 2a 32 35 36 0a  |ctors!16=yj*256.|
00000390  20 76 65 63 74 6f 72 73  21 32 30 3d 79 6b 2a 32  | vectors!20=yk*2|
000003a0  35 36 0a 20 76 65 63 74  6f 72 73 21 32 34 3d 7a  |56. vectors!24=z|
000003b0  69 2a 32 35 36 0a 20 76  65 63 74 6f 72 73 21 32  |i*256. vectors!2|
000003c0  38 3d 7a 6a 2a 32 35 36  0a 20 76 65 63 74 6f 72  |8=zj*256. vector|
000003d0  73 21 33 32 3d 7a 6b 2a  32 35 36 0a 20 76 65 63  |s!32=zk*256. vec|
000003e0  74 6f 72 73 21 33 36 3d  78 64 69 73 74 0a 20 76  |tors!36=xdist. v|
000003f0  65 63 74 6f 72 73 21 34  30 3d 79 64 69 73 74 0a  |ectors!40=ydist.|
00000400  20 76 65 63 74 6f 72 73  21 34 34 3d 7a 64 69 73  | vectors!44=zdis|
00000410  74 0a 0a 20 43 41 4c 4c  67 72 61 70 68 69 63 73  |t.. CALLgraphics|
00000420  5f 73 77 61 70 0a 20 43  41 4c 4c 67 72 61 70 68  |_swap. CALLgraph|
00000430  69 63 73 5f 63 6c 65 61  72 0a 0a 20 41 25 3d 76  |ics_clear.. A%=v|
00000440  65 72 74 69 63 65 73 0a  20 42 25 3d 76 65 72 74  |ertices. B%=vert|
00000450  65 78 5f 64 61 74 61 0a  20 43 41 4c 4c 74 72 61  |ex_data. CALLtra|
00000460  6e 73 66 6f 72 6d 0a 0a  20 41 25 3d 66 61 63 65  |nsform.. A%=face|
00000470  73 0a 20 42 25 3d 76 65  72 74 65 78 5f 64 61 74  |s. B%=vertex_dat|
00000480  61 0a 20 43 25 3d 66 61  63 65 5f 64 61 74 61 0a  |a. C%=face_data.|
00000490  20 43 41 4c 4c 72 65 64  72 61 77 0a 0a 20 55 4e  | CALLredraw.. UN|
000004a0  54 49 4c 46 41 4c 53 45  0a 0a 0a 0a 20 44 45 46  |TILFALSE.... DEF|
000004b0  20 50 52 4f 43 61 73 73  65 6d 62 6c 65 0a 20 44  | PROCassemble. D|
000004c0  49 4d 20 63 6f 64 65 20  31 30 32 34 2a 31 32 38  |IM code 1024*128|
000004d0  0a 0a 20 76 65 72 74 65  78 5f 64 61 74 61 3d 63  |.. vertex_data=c|
000004e0  6f 64 65 2b 31 30 32 34  2a 34 0a 20 66 61 63 65  |ode+1024*4. face|
000004f0  5f 64 61 74 61 3d 63 6f  64 65 2b 31 30 32 34 2a  |_data=code+1024*|
00000500  38 0a 20 74 72 61 63 65  5f 64 61 74 61 3d 63 6f  |8. trace_data=co|
00000510  64 65 2b 31 30 32 34 2a  31 32 0a 20 64 69 76 5f  |de+1024*12. div_|
00000520  64 61 74 61 3d 63 6f 64  65 2b 31 30 32 34 2a 31  |data=code+1024*1|
00000530  36 0a 20 72 65 63 69 70  5f 64 61 74 61 3d 63 6f  |6. recip_data=co|
00000540  64 65 2b 31 30 32 34 2a  33 32 0a 20 73 70 72 69  |de+1024*32. spri|
00000550  74 65 5f 64 61 74 61 3d  63 6f 64 65 2b 31 30 32  |te_data=code+102|
00000560  34 2a 34 38 0a 0a 20 46  4f 52 20 70 61 73 73 3d  |4*48.. FOR pass=|
00000570  30 20 54 4f 20 32 20 53  54 45 50 20 32 0a 20 50  |0 TO 2 STEP 2. P|
00000580  25 3d 63 6f 64 65 0a 20  5b 20 4f 50 54 70 61 73  |%=code. [ OPTpas|
00000590  73 0a 0a 20 2e 74 72 61  6e 73 66 6f 72 6d 0a 20  |s.. .transform. |
000005a0  53 54 4d 46 44 20 52 31  33 21 2c 20 7b 52 31 34  |STMFD R13!, {R14|
000005b0  7d 0a 20 4c 44 52 20 52  31 30 2c 20 72 65 63 69  |}. LDR R10, reci|
000005c0  70 5f 61 64 64 72 65 73  73 0a 20 4d 4f 56 20 52  |p_address. MOV R|
000005d0  31 32 2c 52 31 0a 20 4d  4f 56 20 52 31 34 2c 52  |12,R1. MOV R14,R|
000005e0  30 0a 20 2e 74 72 61 6e  73 66 6f 72 6d 5f 6d 61  |0. .transform_ma|
000005f0  69 6e 0a 20 4c 44 4d 49  41 20 52 31 32 21 2c 20  |in. LDMIA R12!, |
00000600  7b 52 33 2d 52 35 7d 0a  5c 0a 20 41 44 52 20 52  |{R3-R5}.\. ADR R|
00000610  31 31 2c 20 76 65 63 74  6f 72 73 0a 20 4c 44 4d  |11, vectors. LDM|
00000620  49 41 20 52 31 31 21 2c  20 7b 52 36 2d 52 38 7d  |IA R11!, {R6-R8}|
00000630  0a 20 4d 55 4c 20 52 30  2c 52 33 2c 52 36 0a 20  |. MUL R0,R3,R6. |
00000640  4d 4c 41 20 52 30 2c 52  34 2c 52 37 2c 52 30 0a  |MLA R0,R4,R7,R0.|
00000650  20 4d 4c 41 20 52 30 2c  52 35 2c 52 38 2c 52 30  | MLA R0,R5,R8,R0|
00000660  0a 5c 0a 20 4c 44 4d 49  41 20 52 31 31 21 2c 20  |.\. LDMIA R11!, |
00000670  7b 52 36 2d 52 38 7d 0a  20 4d 55 4c 20 52 31 2c  |{R6-R8}. MUL R1,|
00000680  52 33 2c 52 36 0a 20 4d  4c 41 20 52 31 2c 52 34  |R3,R6. MLA R1,R4|
00000690  2c 52 37 2c 52 31 0a 20  4d 4c 41 20 52 31 2c 52  |,R7,R1. MLA R1,R|
000006a0  35 2c 52 38 2c 52 31 0a  5c 0a 20 4c 44 4d 49 41  |5,R8,R1.\. LDMIA|
000006b0  20 52 31 31 21 2c 20 7b  52 36 2d 52 38 7d 0a 20  | R11!, {R6-R8}. |
000006c0  4d 55 4c 20 52 32 2c 52  33 2c 52 36 0a 20 4d 4c  |MUL R2,R3,R6. ML|
000006d0  41 20 52 32 2c 52 34 2c  52 37 2c 52 32 0a 20 4d  |A R2,R4,R7,R2. M|
000006e0  4c 41 20 52 32 2c 52 35  2c 52 38 2c 52 32 0a 5c  |LA R2,R5,R8,R2.\|
000006f0  0a 20 53 54 4d 49 41 20  52 31 32 21 2c 20 7b 52  |. STMIA R12!, {R|
00000700  30 2d 52 32 7d 0a 20 4c  44 4d 49 41 20 52 31 31  |0-R2}. LDMIA R11|
00000710  21 2c 20 7b 52 33 2d 52  35 7d 0a 20 41 44 44 20  |!, {R3-R5}. ADD |
00000720  52 30 2c 52 30 2c 52 33  2c 41 53 4c 20 23 38 0a  |R0,R0,R3,ASL #8.|
00000730  20 41 44 44 20 52 31 2c  52 31 2c 52 34 2c 41 53  | ADD R1,R1,R4,AS|
00000740  4c 20 23 38 0a 20 41 44  44 20 52 32 2c 52 32 2c  |L #8. ADD R2,R2,|
00000750  52 35 2c 41 53 4c 20 23  38 0a 5c 0a 20 4d 4f 56  |R5,ASL #8.\. MOV|
00000760  20 52 32 2c 52 32 2c 41  53 52 20 23 31 30 0a 20  | R2,R2,ASR #10. |
00000770  4c 44 52 20 52 37 2c 20  5b 52 31 30 2c 52 32 2c  |LDR R7, [R10,R2,|
00000780  4c 53 4c 20 23 32 5d 0a  20 4d 55 4c 20 52 38 2c  |LSL #2]. MUL R8,|
00000790  52 30 2c 52 37 0a 20 4d  4f 56 20 52 30 2c 52 38  |R0,R7. MOV R0,R8|
000007a0  2c 41 53 52 20 23 31 30  0a 20 4d 55 4c 20 52 38  |,ASR #10. MUL R8|
000007b0  2c 52 31 2c 52 37 0a 20  4d 4f 56 20 52 31 2c 52  |,R1,R7. MOV R1,R|
000007c0  38 2c 41 53 52 20 23 31  30 0a 20 53 54 4d 49 41  |8,ASR #10. STMIA|
000007d0  20 52 31 32 21 2c 20 7b  52 30 2d 52 31 7d 0a 5c  | R12!, {R0-R1}.\|
000007e0  0a 20 53 55 42 53 20 52  31 34 2c 52 31 34 2c 23  |. SUBS R14,R14,#|
000007f0  31 0a 20 42 47 54 20 74  72 61 6e 73 66 6f 72 6d  |1. BGT transform|
00000800  5f 6d 61 69 6e 0a 20 4c  44 4d 46 44 20 52 31 33  |_main. LDMFD R13|
00000810  21 2c 20 7b 52 31 35 7d  0a 0a 0a 0a 20 2e 72 65  |!, {R15}.... .re|
00000820  64 72 61 77 5f 74 65 78  74 75 72 65 0a 20 53 54  |draw_texture. ST|
00000830  4d 46 44 20 52 31 33 21  2c 20 7b 52 31 30 2d 52  |MFD R13!, {R10-R|
00000840  31 32 2c 52 31 34 7d 0a  20 42 4c 20 74 72 61 6e  |12,R14}. BL tran|
00000850  73 66 6f 72 6d 5f 76 69  65 77 0a 20 4c 44 52 20  |sform_view. LDR |
00000860  52 31 2c 20 79 73 74 61  72 74 0a 20 4c 44 52 20  |R1, ystart. LDR |
00000870  52 35 2c 20 79 65 6e 64  0a 20 4c 44 52 20 52 34  |R5, yend. LDR R4|
00000880  2c 20 74 72 61 63 65 5f  61 64 64 72 65 73 73 0a  |, trace_address.|
00000890  5c 0a 20 41 44 44 20 52  35 2c 52 35 2c 23 31 32  |\. ADD R5,R5,#12|
000008a0  38 0a 20 41 44 44 53 20  52 31 2c 52 31 2c 23 31  |8. ADDS R1,R1,#1|
000008b0  32 38 0a 20 53 55 42 4c  54 20 52 34 2c 52 34 2c  |28. SUBLT R4,R4,|
000008c0  52 31 2c 41 53 4c 20 23  33 0a 20 4d 4f 56 4c 54  |R1,ASL #3. MOVLT|
000008d0  20 52 31 2c 23 30 0a 20  43 4d 50 20 52 35 2c 23  | R1,#0. CMP R5,#|
000008e0  32 35 36 0a 20 4d 4f 56  47 54 20 52 35 2c 23 32  |256. MOVGT R5,#2|
000008f0  35 36 0a 20 53 55 42 20  52 35 2c 52 35 2c 52 31  |56. SUB R5,R5,R1|
00000900  0a 20 53 55 42 20 52 31  2c 52 31 2c 23 31 32 38  |. SUB R1,R1,#128|
00000910  0a 5c 0a 20 2e 72 65 64  72 61 77 5f 74 65 78 74  |.\. .redraw_text|
00000920  75 72 65 5f 6d 61 69 6e  0a 20 4c 44 4d 49 41 20  |ure_main. LDMIA |
00000930  52 34 21 2c 20 7b 52 30  2c 52 32 7d 0a 20 42 4c  |R4!, {R0,R2}. BL|
00000940  20 74 65 78 74 75 72 65  0a 20 41 44 44 20 52 31  | texture. ADD R1|
00000950  2c 52 31 2c 23 31 0a 20  53 55 42 53 20 52 35 2c  |,R1,#1. SUBS R5,|
00000960  52 35 2c 23 31 0a 20 42  47 54 20 72 65 64 72 61  |R5,#1. BGT redra|
00000970  77 5f 74 65 78 74 75 72  65 5f 6d 61 69 6e 0a 20  |w_texture_main. |
00000980  4c 44 4d 46 44 20 52 31  33 21 2c 20 7b 52 31 30  |LDMFD R13!, {R10|
00000990  2d 52 31 32 2c 52 31 35  7d 0a 0a 0a 0a 20 2e 74  |-R12,R15}.... .t|
000009a0  72 61 6e 73 66 6f 72 6d  5f 76 69 65 77 0a 20 53  |ransform_view. S|
000009b0  54 4d 46 44 20 52 31 33  21 2c 20 7b 52 31 34 7d  |TMFD R13!, {R14}|
000009c0  0a 20 41 44 52 20 52 31  31 2c 20 76 65 63 74 6f  |. ADR R11, vecto|
000009d0  72 73 2b 33 36 0a 20 4c  44 4d 49 41 20 52 31 31  |rs+36. LDMIA R11|
000009e0  21 2c 20 7b 52 33 2d 52  35 7d 0a 20 41 44 52 20  |!, {R3-R5}. ADR |
000009f0  52 31 31 2c 20 76 65 63  74 6f 72 73 0a 20 4c 44  |R11, vectors. LD|
00000a00  4d 49 41 20 52 31 31 21  2c 20 7b 52 36 2d 52 38  |MIA R11!, {R6-R8|
00000a10  7d 0a 20 4d 55 4c 20 52  30 2c 52 33 2c 52 36 0a  |}. MUL R0,R3,R6.|
00000a20  20 4d 55 4c 20 52 31 2c  52 33 2c 52 37 0a 20 4d  | MUL R1,R3,R7. M|
00000a30  55 4c 20 52 32 2c 52 33  2c 52 38 0a 5c 0a 20 4c  |UL R2,R3,R8.\. L|
00000a40  44 4d 49 41 20 52 31 31  21 2c 20 7b 52 36 2d 52  |DMIA R11!, {R6-R|
00000a50  38 7d 0a 20 4d 4c 41 20  52 30 2c 52 34 2c 52 36  |8}. MLA R0,R4,R6|
00000a60  2c 52 30 0a 20 4d 4c 41  20 52 31 2c 52 34 2c 52  |,R0. MLA R1,R4,R|
00000a70  37 2c 52 31 0a 20 4d 4c  41 20 52 32 2c 52 34 2c  |7,R1. MLA R2,R4,|
00000a80  52 38 2c 52 32 0a 5c 0a  20 4c 44 4d 49 41 20 52  |R8,R2.\. LDMIA R|
00000a90  31 31 21 2c 20 7b 52 36  2d 52 38 7d 0a 20 4d 4c  |11!, {R6-R8}. ML|
00000aa0  41 20 52 30 2c 52 35 2c  52 36 2c 52 30 0a 20 4d  |A R0,R5,R6,R0. M|
00000ab0  4c 41 20 52 31 2c 52 35  2c 52 37 2c 52 31 0a 20  |LA R1,R5,R7,R1. |
00000ac0  4d 4c 41 20 52 32 2c 52  35 2c 52 38 2c 52 32 0a  |MLA R2,R5,R8,R2.|
00000ad0  5c 0a 20 4d 4f 56 20 52  30 2c 52 30 2c 41 53 52  |\. MOV R0,R0,ASR|
00000ae0  20 23 38 0a 20 4d 4f 56  20 52 31 2c 52 31 2c 41  | #8. MOV R1,R1,A|
00000af0  53 52 20 23 38 0a 20 4d  4f 56 20 52 32 2c 52 32  |SR #8. MOV R2,R2|
00000b00  2c 41 53 52 20 23 38 0a  5c 0a 20 41 44 52 20 52  |,ASR #8.\. ADR R|
00000b10  31 31 2c 20 76 65 63 74  6f 72 73 2b 39 32 0a 20  |11, vectors+92. |
00000b20  53 54 4d 49 41 20 52 31  31 2c 20 7b 52 30 2d 52  |STMIA R11, {R0-R|
00000b30  32 7d 0a 5c 0a 20 41 44  52 20 52 31 31 2c 20 76  |2}.\. ADR R11, v|
00000b40  65 63 74 6f 72 73 0a 20  4c 44 4d 49 41 20 52 31  |ectors. LDMIA R1|
00000b50  31 2c 20 7b 52 33 2d 52  35 7d 0a 20 4d 4f 56 20  |1, {R3-R5}. MOV |
00000b60  52 33 2c 52 33 2c 41 53  4c 20 23 31 0a 20 4d 4f  |R3,R3,ASL #1. MO|
00000b70  56 20 52 34 2c 52 34 2c  41 53 4c 20 23 31 0a 20  |V R4,R4,ASL #1. |
00000b80  4d 4f 56 20 52 35 2c 52  35 2c 41 53 4c 20 23 31  |MOV R5,R5,ASL #1|
00000b90  0a 20 4d 55 4c 20 52 33  2c 52 32 2c 52 33 0a 20  |. MUL R3,R2,R3. |
00000ba0  4d 55 4c 20 52 34 2c 52  32 2c 52 34 0a 5c 0a 20  |MUL R4,R2,R4.\. |
00000bb0  41 44 52 20 52 31 31 2c  20 76 65 63 74 6f 72 73  |ADR R11, vectors|
00000bc0  2b 38 30 0a 20 53 54 4d  49 41 20 52 31 31 2c 20  |+80. STMIA R11, |
00000bd0  7b 52 33 2d 52 35 7d 0a  20 4c 44 4d 46 44 20 52  |{R3-R5}. LDMFD R|
00000be0  31 33 21 2c 20 7b 52 31  35 7d 0a 0a 0a 0a 20 2e  |13!, {R15}.... .|
00000bf0  74 65 78 74 75 72 65 0a  20 53 54 4d 46 44 20 52  |texture. STMFD R|
00000c00  31 33 21 2c 20 7b 52 30  2d 52 35 2c 52 31 34 7d  |13!, {R0-R5,R14}|
00000c10  0a 20 4d 4f 56 20 52 33  2c 52 30 2c 41 53 4c 20  |. MOV R3,R0,ASL |
00000c20  23 31 0a 20 4d 4f 56 20  52 34 2c 52 31 2c 41 53  |#1. MOV R4,R1,AS|
00000c30  4c 20 23 32 0a 20 4d 4f  56 20 52 35 2c 23 31 30  |L #2. MOV R5,#10|
00000c40  32 34 0a 0a 20 53 55 42  20 52 31 34 2c 52 32 2c  |24.. SUB R14,R2,|
00000c50  52 30 0a 0a 20 41 44 44  20 52 30 2c 52 30 2c 23  |R0.. ADD R0,R0,#|
00000c60  33 32 30 0a 20 52 53 42  20 52 31 2c 52 31 2c 23  |320. RSB R1,R1,#|
00000c70  31 32 37 0a 0a 20 4c 44  52 20 52 31 32 2c 20 76  |127.. LDR R12, v|
00000c80  64 75 5f 61 64 64 72 65  73 73 0a 20 41 44 44 20  |du_address. ADD |
00000c90  52 31 32 2c 52 31 32 2c  52 31 2c 41 53 4c 20 23  |R12,R12,R1,ASL #|
00000ca0  39 0a 20 41 44 44 20 52  31 32 2c 52 31 32 2c 52  |9. ADD R12,R12,R|
00000cb0  31 2c 41 53 4c 20 23 37  0a 20 41 44 44 20 52 31  |1,ASL #7. ADD R1|
00000cc0  32 2c 52 31 32 2c 52 30  0a 0a 0a 20 41 44 52 20  |2,R12,R0... ADR |
00000cd0  52 31 31 2c 20 76 65 63  74 6f 72 73 0a 20 4c 44  |R11, vectors. LD|
00000ce0  4d 49 41 20 52 31 31 21  2c 20 7b 52 36 2d 52 38  |MIA R11!, {R6-R8|
00000cf0  7d 0a 20 4d 55 4c 20 52  30 2c 52 33 2c 52 36 0a  |}. MUL R0,R3,R6.|
00000d00  20 4d 55 4c 20 52 31 2c  52 33 2c 52 37 0a 20 4d  | MUL R1,R3,R7. M|
00000d10  55 4c 20 52 32 2c 52 33  2c 52 38 0a 5c 0a 20 4c  |UL R2,R3,R8.\. L|
00000d20  44 4d 49 41 20 52 31 31  21 2c 20 7b 52 36 2d 52  |DMIA R11!, {R6-R|
00000d30  38 7d 0a 20 4d 4c 41 20  52 30 2c 52 34 2c 52 36  |8}. MLA R0,R4,R6|
00000d40  2c 52 30 0a 20 4d 4c 41  20 52 31 2c 52 34 2c 52  |,R0. MLA R1,R4,R|
00000d50  37 2c 52 31 0a 20 4d 4c  41 20 52 32 2c 52 34 2c  |7,R1. MLA R2,R4,|
00000d60  52 38 2c 52 32 0a 5c 0a  20 4c 44 4d 49 41 20 52  |R8,R2.\. LDMIA R|
00000d70  31 31 21 2c 20 7b 52 36  2d 52 38 7d 0a 20 4d 4c  |11!, {R6-R8}. ML|
00000d80  41 20 52 30 2c 52 35 2c  52 36 2c 52 30 0a 20 4d  |A R0,R5,R6,R0. M|
00000d90  4c 41 20 52 31 2c 52 35  2c 52 37 2c 52 31 0a 20  |LA R1,R5,R7,R1. |
00000da0  4d 4c 41 20 52 32 2c 52  35 2c 52 38 2c 52 32 0a  |MLA R2,R5,R8,R2.|
00000db0  5c 0a 20 41 44 52 20 52  31 31 2c 20 76 65 63 74  |\. ADR R11, vect|
00000dc0  6f 72 73 2b 38 30 0a 20  4c 44 4d 49 41 20 52 31  |ors+80. LDMIA R1|
00000dd0  31 2c 20 7b 52 33 2d 52  38 7d 0a 20 4d 55 4c 20  |1, {R3-R8}. MUL |
00000de0  52 30 2c 52 38 2c 52 30  0a 20 4d 55 4c 20 52 31  |R0,R8,R0. MUL R1|
00000df0  2c 52 38 2c 52 31 0a 0a  20 4d 4f 56 20 52 36 2c  |,R8,R1.. MOV R6,|
00000e00  52 36 2c 41 53 52 20 23  32 0a 20 4d 4f 56 20 52  |R6,ASR #2. MOV R|
00000e10  37 2c 52 37 2c 41 53 52  20 23 32 0a 20 53 55 42  |7,R7,ASR #2. SUB|
00000e20  20 52 36 2c 52 36 2c 23  31 32 38 0a 20 41 44 44  | R6,R6,#128. ADD|
00000e30  20 52 37 2c 52 37 2c 23  31 32 37 0a 0a 20 2e 74  | R7,R7,#127.. .t|
00000e40  65 78 74 75 72 65 5f 6d  61 69 6e 0a 20 4d 4f 56  |exture_main. MOV|
00000e50  20 52 31 30 2c 52 32 2c  41 53 52 20 23 38 0a 0a  | R10,R2,ASR #8..|
00000e60  20 4c 44 52 20 52 31 31  2c 20 64 69 76 5f 61 64  | LDR R11, div_ad|
00000e70  64 72 65 73 73 0a 20 4c  44 52 20 52 31 30 2c 20  |dress. LDR R10, |
00000e80  5b 52 31 31 2c 52 31 30  2c 4c 53 4c 20 23 32 5d  |[R11,R10,LSL #2]|
00000e90  0a 20 4d 4f 56 20 52 38  2c 52 31 30 2c 4c 53 52  |. MOV R8,R10,LSR|
00000ea0  20 23 31 36 0a 0a 20 4d  4f 56 20 52 31 31 2c 52  | #16.. MOV R11,R|
00000eb0  31 2c 41 53 52 20 23 31  36 0a 20 4d 55 4c 20 52  |1,ASR #16. MUL R|
00000ec0  39 2c 52 31 31 2c 52 38  0a 20 4d 4f 56 20 52 31  |9,R11,R8. MOV R1|
00000ed0  31 2c 52 30 2c 41 53 52  20 23 31 36 0a 20 4d 55  |1,R0,ASR #16. MU|
00000ee0  4c 20 52 38 2c 52 31 31  2c 52 38 0a 0a 20 41 44  |L R8,R11,R8.. AD|
00000ef0  44 20 52 31 30 2c 52 31  30 2c 23 37 2b 32 0a 0a  |D R10,R10,#7+2..|
00000f00  20 52 53 42 20 52 38 2c  52 36 2c 52 38 2c 41 53  | RSB R8,R6,R8,AS|
00000f10  52 20 52 31 30 0a 20 53  55 42 20 52 39 2c 52 37  |R R10. SUB R9,R7|
00000f20  2c 52 39 2c 41 53 52 20  52 31 30 0a 0a 20 4c 44  |,R9,ASR R10.. LD|
00000f30  52 20 52 31 31 2c 20 74  65 78 74 75 72 65 5f 61  |R R11, texture_a|
00000f40  64 64 72 65 73 73 0a 20  41 44 44 20 52 31 31 2c  |ddress. ADD R11,|
00000f50  52 31 31 2c 52 39 2c 41  53 4c 20 23 38 0a 0a 20  |R11,R9,ASL #8.. |
00000f60  43 4d 50 20 52 38 2c 23  32 35 36 0a 20 43 4d 50  |CMP R8,#256. CMP|
00000f70  43 43 20 52 39 2c 23 32  35 36 0a 20 4c 44 52 43  |CC R9,#256. LDRC|
00000f80  43 42 20 52 31 30 2c 20  5b 52 31 31 2c 52 38 5d  |CB R10, [R11,R8]|
00000f90  0a 20 53 54 52 43 43 42  20 52 31 30 2c 20 5b 52  |. STRCCB R10, [R|
00000fa0  31 32 5d 0a 20 41 44 44  20 52 31 32 2c 52 31 32  |12]. ADD R12,R12|
00000fb0  2c 23 31 0a 20 41 44 44  20 52 30 2c 52 30 2c 52  |,#1. ADD R0,R0,R|
00000fc0  33 0a 20 41 44 44 20 52  31 2c 52 31 2c 52 34 0a  |3. ADD R1,R1,R4.|
00000fd0  20 41 44 44 20 52 32 2c  52 32 2c 52 35 0a 20 53  | ADD R2,R2,R5. S|
00000fe0  55 42 53 20 52 31 34 2c  52 31 34 2c 23 31 0a 20  |UBS R14,R14,#1. |
00000ff0  42 47 54 20 74 65 78 74  75 72 65 5f 6d 61 69 6e  |BGT texture_main|
00001000  0a 20 4c 44 4d 46 44 20  52 31 33 21 2c 20 7b 52  |. LDMFD R13!, {R|
00001010  30 2d 52 35 2c 52 31 35  7d 0a 0a 20 2e 76 65 63  |0-R5,R15}.. .vec|
00001020  74 6f 72 73 0a 20 45 51  55 53 20 20 53 54 52 49  |tors. EQUS  STRI|
00001030  4e 47 24 28 31 32 38 2c  43 48 52 24 30 29 0a 0a  |NG$(128,CHR$0)..|
00001040  0a 0a 20 2e 72 65 64 72  61 77 0a 20 53 54 4d 46  |.. .redraw. STMF|
00001050  44 20 52 31 33 21 2c 20  7b 52 31 34 7d 0a 20 41  |D R13!, {R14}. A|
00001060  44 44 20 52 31 30 2c 52  31 2c 23 32 34 0a 20 4d  |DD R10,R1,#24. M|
00001070  4f 56 20 52 31 31 2c 52  32 0a 20 4d 4f 56 20 52  |OV R11,R2. MOV R|
00001080  31 32 2c 52 30 0a 20 2e  72 65 64 72 61 77 5f 6d  |12,R0. .redraw_m|
00001090  61 69 6e 0a 20 4c 44 52  20 52 37 2c 20 5b 52 31  |ain. LDR R7, [R1|
000010a0  31 2c 23 30 5d 0a 20 41  44 44 20 52 37 2c 52 31  |1,#0]. ADD R7,R1|
000010b0  30 2c 52 37 2c 4c 53 4c  20 23 35 0a 20 4c 44 4d  |0,R7,LSL #5. LDM|
000010c0  49 41 20 52 37 2c 20 7b  52 30 2c 52 31 7d 0a 20  |IA R7, {R0,R1}. |
000010d0  4c 44 52 20 52 37 2c 20  5b 52 31 31 2c 23 34 5d  |LDR R7, [R11,#4]|
000010e0  0a 20 41 44 44 20 52 37  2c 52 31 30 2c 52 37 2c  |. ADD R7,R10,R7,|
000010f0  4c 53 4c 20 23 35 0a 20  4c 44 4d 49 41 20 52 37  |LSL #5. LDMIA R7|
00001100  2c 20 7b 52 32 2c 52 33  7d 0a 20 4c 44 52 20 52  |, {R2,R3}. LDR R|
00001110  37 2c 20 5b 52 31 31 2c  23 38 5d 0a 20 41 44 44  |7, [R11,#8]. ADD|
00001120  20 52 37 2c 52 31 30 2c  52 37 2c 4c 53 4c 20 23  | R7,R10,R7,LSL #|
00001130  35 0a 20 4c 44 4d 49 41  20 52 37 2c 20 7b 52 34  |5. LDMIA R7, {R4|
00001140  2c 52 35 7d 0a 20 53 55  42 20 52 36 2c 52 32 2c  |,R5}. SUB R6,R2,|
00001150  52 30 0a 20 53 55 42 20  52 37 2c 52 33 2c 52 31  |R0. SUB R7,R3,R1|
00001160  0a 20 53 55 42 20 52 38  2c 52 34 2c 52 30 0a 20  |. SUB R8,R4,R0. |
00001170  53 55 42 20 52 39 2c 52  35 2c 52 31 0a 20 4d 55  |SUB R9,R5,R1. MU|
00001180  4c 20 52 39 2c 52 36 2c  52 39 0a 20 4d 55 4c 20  |L R9,R6,R9. MUL |
00001190  52 37 2c 52 38 2c 52 37  0a 20 53 55 42 53 20 52  |R7,R8,R7. SUBS R|
000011a0  37 2c 52 37 2c 52 39 0a  20 42 4c 54 20 68 69 64  |7,R7,R9. BLT hid|
000011b0  64 65 6e 0a 20 4c 44 52  20 52 37 2c 20 5b 52 31  |den. LDR R7, [R1|
000011c0  31 2c 23 31 32 5d 0a 20  41 44 44 20 52 37 2c 52  |1,#12]. ADD R7,R|
000011d0  31 30 2c 52 37 2c 4c 53  4c 20 23 35 0a 20 4c 44  |10,R7,LSL #5. LD|
000011e0  4d 49 41 20 52 37 2c 20  7b 52 36 2c 52 37 7d 0a  |MIA R7, {R6,R7}.|
000011f0  20 42 4c 20 67 72 61 70  68 69 63 73 5f 71 75 61  | BL graphics_qua|
00001200  64 0a 20 4c 44 52 20 52  30 2c 20 5b 52 31 31 2c  |d. LDR R0, [R11,|
00001210  23 31 36 5d 0a 20 42 4c  20 67 72 61 70 68 69 63  |#16]. BL graphic|
00001220  73 5f 64 72 61 77 0a 20  43 4d 50 20 52 31 32 2c  |s_draw. CMP R12,|
00001230  23 31 0a 20 42 4c 45 51  20 72 65 64 72 61 77 5f  |#1. BLEQ redraw_|
00001240  74 65 78 74 75 72 65 0a  20 2e 68 69 64 64 65 6e  |texture. .hidden|
00001250  0a 20 41 44 44 20 52 31  31 2c 52 31 31 2c 23 32  |. ADD R11,R11,#2|
00001260  30 0a 20 53 55 42 53 20  52 31 32 2c 52 31 32 2c  |0. SUBS R12,R12,|
00001270  23 31 0a 20 42 47 54 20  72 65 64 72 61 77 5f 6d  |#1. BGT redraw_m|
00001280  61 69 6e 0a 20 4c 44 4d  46 44 20 52 31 33 21 2c  |ain. LDMFD R13!,|
00001290  20 7b 52 31 35 7d 0a 0a  0a 0a 20 2e 67 72 61 70  | {R15}.... .grap|
000012a0  68 69 63 73 5f 64 72 61  77 0a 20 53 54 4d 46 44  |hics_draw. STMFD|
000012b0  20 52 31 33 21 2c 20 7b  52 31 34 7d 0a 20 4c 44  | R13!, {R14}. LD|
000012c0  52 20 52 31 2c 20 79 73  74 61 72 74 0a 20 4c 44  |R R1, ystart. LD|
000012d0  52 20 52 35 2c 20 79 65  6e 64 0a 20 4c 44 52 20  |R R5, yend. LDR |
000012e0  52 34 2c 20 74 72 61 63  65 5f 61 64 64 72 65 73  |R4, trace_addres|
000012f0  73 0a 20 41 44 44 20 52  35 2c 52 35 2c 23 31 32  |s. ADD R5,R5,#12|
00001300  38 0a 20 41 44 44 53 20  52 31 2c 52 31 2c 23 31  |8. ADDS R1,R1,#1|
00001310  32 38 0a 5c 0a 20 53 55  42 4c 54 20 52 34 2c 52  |28.\. SUBLT R4,R|
00001320  34 2c 52 31 2c 41 53 4c  20 23 33 0a 20 4d 4f 56  |4,R1,ASL #3. MOV|
00001330  4c 54 20 52 31 2c 23 30  0a 20 43 4d 50 20 52 35  |LT R1,#0. CMP R5|
00001340  2c 23 32 35 36 0a 20 4d  4f 56 47 54 20 52 35 2c  |,#256. MOVGT R5,|
00001350  23 32 35 36 0a 20 53 55  42 20 52 35 2c 52 35 2c  |#256. SUB R5,R5,|
00001360  52 31 0a 5c 0a 20 52 53  42 20 52 31 2c 52 31 2c  |R1.\. RSB R1,R1,|
00001370  23 32 35 35 0a 20 4c 44  52 20 52 37 2c 20 76 64  |#255. LDR R7, vd|
00001380  75 5f 61 64 64 72 65 73  73 0a 20 41 44 44 20 52  |u_address. ADD R|
00001390  37 2c 52 37 2c 52 31 2c  41 53 4c 20 23 39 0a 20  |7,R7,R1,ASL #9. |
000013a0  41 44 44 20 52 37 2c 52  37 2c 52 31 2c 41 53 4c  |ADD R7,R7,R1,ASL|
000013b0  20 23 37 0a 20 41 44 44  20 52 37 2c 52 37 2c 23  | #7. ADD R7,R7,#|
000013c0  33 32 30 0a 5c 0a 20 2e  67 72 61 70 68 69 63 73  |320.\. .graphics|
000013d0  5f 64 72 61 77 5f 6d 61  69 6e 0a 20 4c 44 4d 49  |_draw_main. LDMI|
000013e0  41 20 52 34 21 2c 20 7b  52 32 2c 52 33 7d 0a 20  |A R4!, {R2,R3}. |
000013f0  53 55 42 20 52 33 2c 52  33 2c 52 32 0a 20 41 44  |SUB R3,R3,R2. AD|
00001400  44 20 52 32 2c 52 32 2c  52 37 0a 20 2e 67 72 61  |D R2,R2,R7. .gra|
00001410  70 68 69 63 73 5f 64 72  61 77 5f 70 69 78 65 6c  |phics_draw_pixel|
00001420  0a 20 53 54 52 42 20 52  30 2c 20 5b 52 32 5d 2c  |. STRB R0, [R2],|
00001430  23 31 0a 20 53 55 42 53  20 52 33 2c 52 33 2c 23  |#1. SUBS R3,R3,#|
00001440  31 0a 20 42 47 54 20 67  72 61 70 68 69 63 73 5f  |1. BGT graphics_|
00001450  64 72 61 77 5f 70 69 78  65 6c 0a 20 53 55 42 20  |draw_pixel. SUB |
00001460  52 37 2c 52 37 2c 23 36  34 30 0a 20 53 55 42 53  |R7,R7,#640. SUBS|
00001470  20 52 35 2c 52 35 2c 23  31 0a 20 42 47 54 20 67  | R5,R5,#1. BGT g|
00001480  72 61 70 68 69 63 73 5f  64 72 61 77 5f 6d 61 69  |raphics_draw_mai|
00001490  6e 0a 20 4c 44 4d 46 44  20 52 31 33 21 2c 20 7b  |n. LDMFD R13!, {|
000014a0  52 31 35 7d 0a 0a 0a 20  2e 67 72 61 70 68 69 63  |R15}... .graphic|
000014b0  73 5f 69 6e 69 74 0a 20  53 54 4d 46 44 20 52 31  |s_init. STMFD R1|
000014c0  33 21 2c 20 7b 52 31 34  7d 0a 20 4d 4f 56 20 52  |3!, {R14}. MOV R|
000014d0  30 2c 23 31 0a 20 53 54  52 20 52 30 2c 20 62 61  |0,#1. STR R0, ba|
000014e0  6e 6b 0a 20 42 4c 20 67  72 61 70 68 69 63 73 5f  |nk. BL graphics_|
000014f0  73 77 61 70 0a 20 41 44  52 20 52 30 2c 20 76 64  |swap. ADR R0, vd|
00001500  75 5f 64 61 74 61 0a 20  41 44 52 20 52 31 2c 20  |u_data. ADR R1, |
00001510  62 61 6e 6b 31 0a 20 53  57 49 20 22 4f 53 5f 52  |bank1. SWI "OS_R|
00001520  65 61 64 56 64 75 56 61  72 69 61 62 6c 65 73 22  |eadVduVariables"|
00001530  0a 20 4c 44 4d 46 44 20  52 31 33 21 2c 20 7b 52  |. LDMFD R13!, {R|
00001540  31 35 7d 0a 0a 0a 20 2e  76 64 75 5f 64 61 74 61  |15}... .vdu_data|
00001550  0a 20 45 51 55 44 20 31  34 38 0a 20 45 51 55 44  |. EQUD 148. EQUD|
00001560  20 31 34 39 0a 20 45 51  55 44 20 2d 31 0a 0a 20  | 149. EQUD -1.. |
00001570  2e 62 61 6e 6b 31 20 20  45 51 55 44 20 30 0a 20  |.bank1  EQUD 0. |
00001580  2e 62 61 6e 6b 32 20 20  45 51 55 44 20 30 0a 20  |.bank2  EQUD 0. |
00001590  2e 62 61 6e 6b 20 20 20  20 45 51 55 44 20 30 0a  |.bank    EQUD 0.|
000015a0  0a 0a 20 2e 67 72 61 70  68 69 63 73 5f 73 77 61  |.. .graphics_swa|
000015b0  70 0a 20 53 54 4d 46 44  20 52 31 33 21 2c 20 7b  |p. STMFD R13!, {|
000015c0  52 31 34 7d 0a 20 4d 4f  56 20 52 30 2c 23 31 39  |R14}. MOV R0,#19|
000015d0  0a 20 53 57 49 20 22 4f  53 5f 42 79 74 65 22 0a  |. SWI "OS_Byte".|
000015e0  0a 20 4c 44 52 20 52 31  2c 20 62 61 6e 6b 0a 20  |. LDR R1, bank. |
000015f0  45 4f 52 20 52 37 2c 52  31 2c 23 33 0a 20 53 54  |EOR R7,R1,#3. ST|
00001600  52 20 52 37 2c 20 62 61  6e 6b 0a 20 43 4d 50 20  |R R7, bank. CMP |
00001610  52 31 2c 23 31 0a 20 4c  44 52 45 51 20 52 30 2c  |R1,#1. LDREQ R0,|
00001620  20 62 61 6e 6b 31 0a 20  4c 44 52 4e 45 20 52 30  | bank1. LDRNE R0|
00001630  2c 20 62 61 6e 6b 32 0a  20 53 54 52 20 52 30 2c  |, bank2. STR R0,|
00001640  20 76 64 75 5f 61 64 64  72 65 73 73 0a 0a 20 4d  | vdu_address.. M|
00001650  4f 56 20 52 30 2c 23 31  31 32 0a 20 53 57 49 20  |OV R0,#112. SWI |
00001660  22 4f 53 5f 42 79 74 65  22 0a 0a 20 4d 4f 56 20  |"OS_Byte".. MOV |
00001670  52 30 2c 23 31 31 33 0a  20 4d 4f 56 20 52 31 2c  |R0,#113. MOV R1,|
00001680  52 37 0a 20 53 57 49 20  22 4f 53 5f 42 79 74 65  |R7. SWI "OS_Byte|
00001690  22 0a 20 4c 44 4d 46 44  20 52 31 33 21 2c 20 7b  |". LDMFD R13!, {|
000016a0  52 31 35 7d 0a 0a 0a 20  2e 67 72 61 70 68 69 63  |R15}... .graphic|
000016b0  73 5f 63 6c 65 61 72 0a  20 53 54 4d 46 44 20 52  |s_clear. STMFD R|
000016c0  31 33 21 2c 20 7b 52 31  34 7d 0a 20 4d 4f 56 20  |13!, {R14}. MOV |
000016d0  52 30 2c 23 30 0a 20 4d  4f 56 20 52 31 2c 23 30  |R0,#0. MOV R1,#0|
000016e0  0a 20 4d 4f 56 20 52 32  2c 23 30 0a 20 4d 4f 56  |. MOV R2,#0. MOV|
000016f0  20 52 33 2c 23 30 0a 20  4d 4f 56 20 52 34 2c 23  | R3,#0. MOV R4,#|
00001700  30 0a 20 4d 4f 56 20 52  35 2c 23 30 0a 20 4d 4f  |0. MOV R5,#0. MO|
00001710  56 20 52 36 2c 23 30 0a  20 4d 4f 56 20 52 37 2c  |V R6,#0. MOV R7,|
00001720  23 30 0a 20 4d 4f 56 20  52 38 2c 23 30 0a 20 4d  |#0. MOV R8,#0. M|
00001730  4f 56 20 52 39 2c 23 30  0a 20 4c 44 52 20 52 31  |OV R9,#0. LDR R1|
00001740  31 2c 20 76 64 75 5f 61  64 64 72 65 73 73 0a 20  |1, vdu_address. |
00001750  4d 4f 56 20 52 31 32 2c  23 31 30 32 34 0a 20 2e  |MOV R12,#1024. .|
00001760  67 72 61 70 68 69 63 73  5f 63 6c 65 61 72 5f 6d  |graphics_clear_m|
00001770  61 69 6e 0a 20 53 54 4d  49 41 20 52 31 31 21 2c  |ain. STMIA R11!,|
00001780  20 7b 52 30 2d 52 39 7d  0a 20 53 54 4d 49 41 20  | {R0-R9}. STMIA |
00001790  52 31 31 21 2c 20 7b 52  30 2d 52 39 7d 0a 20 53  |R11!, {R0-R9}. S|
000017a0  54 4d 49 41 20 52 31 31  21 2c 20 7b 52 30 2d 52  |TMIA R11!, {R0-R|
000017b0  39 7d 0a 20 53 54 4d 49  41 20 52 31 31 21 2c 20  |9}. STMIA R11!, |
000017c0  7b 52 30 2d 52 39 7d 0a  20 53 55 42 53 20 52 31  |{R0-R9}. SUBS R1|
000017d0  32 2c 52 31 32 2c 23 31  0a 20 42 47 54 20 67 72  |2,R12,#1. BGT gr|
000017e0  61 70 68 69 63 73 5f 63  6c 65 61 72 5f 6d 61 69  |aphics_clear_mai|
000017f0  6e 0a 20 4c 44 4d 46 44  20 52 31 33 21 2c 20 7b  |n. LDMFD R13!, {|
00001800  52 31 35 7d 0a 0a 0a 20  0a 20 2e 67 72 61 70 68  |R15}... . .graph|
00001810  69 63 73 5f 71 75 61 64  0a 20 53 54 4d 46 44 20  |ics_quad. STMFD |
00001820  52 31 33 21 2c 20 7b 52  31 30 2d 52 31 32 2c 52  |R13!, {R10-R12,R|
00001830  31 34 7d 0a 20 4d 4f 56  20 52 30 2c 52 30 2c 41  |14}. MOV R0,R0,A|
00001840  53 52 20 23 37 0a 20 4d  4f 56 20 52 31 2c 52 31  |SR #7. MOV R1,R1|
00001850  2c 41 53 52 20 23 38 0a  20 4d 4f 56 20 52 32 2c  |,ASR #8. MOV R2,|
00001860  52 32 2c 41 53 52 20 23  37 0a 20 4d 4f 56 20 52  |R2,ASR #7. MOV R|
00001870  33 2c 52 33 2c 41 53 52  20 23 38 0a 20 4d 4f 56  |3,R3,ASR #8. MOV|
00001880  20 52 34 2c 52 34 2c 41  53 52 20 23 37 0a 20 4d  | R4,R4,ASR #7. M|
00001890  4f 56 20 52 35 2c 52 35  2c 41 53 52 20 23 38 0a  |OV R5,R5,ASR #8.|
000018a0  20 4d 4f 56 20 52 36 2c  52 36 2c 41 53 52 20 23  | MOV R6,R6,ASR #|
000018b0  37 0a 20 4d 4f 56 20 52  37 2c 52 37 2c 41 53 52  |7. MOV R7,R7,ASR|
000018c0  20 23 38 0a 5c 0a 20 53  55 42 53 20 52 31 31 2c  | #8.\. SUBS R11,|
000018d0  52 33 2c 52 31 0a 20 4d  4f 56 4c 54 20 52 33 2c  |R3,R1. MOVLT R3,|
000018e0  52 31 0a 20 41 44 44 4c  54 20 52 31 2c 52 31 2c  |R1. ADDLT R1,R1,|
000018f0  52 31 31 0a 20 4d 4f 56  4c 54 20 52 31 31 2c 52  |R11. MOVLT R11,R|
00001900  32 0a 20 4d 4f 56 4c 54  20 52 32 2c 52 30 0a 20  |2. MOVLT R2,R0. |
00001910  4d 4f 56 4c 54 20 52 30  2c 52 31 31 0a 5c 0a 20  |MOVLT R0,R11.\. |
00001920  53 55 42 53 20 52 31 31  2c 52 37 2c 52 35 0a 20  |SUBS R11,R7,R5. |
00001930  4d 4f 56 4c 54 20 52 37  2c 52 35 0a 20 41 44 44  |MOVLT R7,R5. ADD|
00001940  4c 54 20 52 35 2c 52 35  2c 52 31 31 0a 20 4d 4f  |LT R5,R5,R11. MO|
00001950  56 4c 54 20 52 31 31 2c  52 36 0a 20 4d 4f 56 4c  |VLT R11,R6. MOVL|
00001960  54 20 52 36 2c 52 34 0a  20 4d 4f 56 4c 54 20 52  |T R6,R4. MOVLT R|
00001970  34 2c 52 31 31 0a 5c 0a  20 53 55 42 53 20 52 31  |4,R11.\. SUBS R1|
00001980  31 2c 52 35 2c 52 31 0a  20 4d 4f 56 4c 54 20 52  |1,R5,R1. MOVLT R|
00001990  35 2c 52 31 0a 20 41 44  44 4c 54 20 52 31 2c 52  |5,R1. ADDLT R1,R|
000019a0  31 2c 52 31 31 0a 20 4d  4f 56 4c 54 20 52 31 31  |1,R11. MOVLT R11|
000019b0  2c 52 34 0a 20 4d 4f 56  4c 54 20 52 34 2c 52 30  |,R4. MOVLT R4,R0|
000019c0  0a 20 4d 4f 56 4c 54 20  52 30 2c 52 31 31 0a 5c  |. MOVLT R0,R11.\|
000019d0  0a 20 53 55 42 53 20 52  31 31 2c 52 37 2c 52 33  |. SUBS R11,R7,R3|
000019e0  0a 20 4d 4f 56 4c 54 20  52 37 2c 52 33 0a 20 41  |. MOVLT R7,R3. A|
000019f0  44 44 4c 54 20 52 33 2c  52 33 2c 52 31 31 0a 20  |DDLT R3,R3,R11. |
00001a00  4d 4f 56 4c 54 20 52 31  31 2c 52 36 0a 20 4d 4f  |MOVLT R11,R6. MO|
00001a10  56 4c 54 20 52 36 2c 52  32 0a 20 4d 4f 56 4c 54  |VLT R6,R2. MOVLT|
00001a20  20 52 32 2c 52 31 31 0a  5c 0a 20 53 55 42 53 20  | R2,R11.\. SUBS |
00001a30  52 31 31 2c 52 35 2c 52  33 0a 20 4d 4f 56 4c 54  |R11,R5,R3. MOVLT|
00001a40  20 52 35 2c 52 33 0a 20  41 44 44 4c 54 20 52 33  | R5,R3. ADDLT R3|
00001a50  2c 52 33 2c 52 31 31 0a  20 4d 4f 56 4c 54 20 52  |,R3,R11. MOVLT R|
00001a60  31 31 2c 52 34 0a 20 4d  4f 56 4c 54 20 52 34 2c  |11,R4. MOVLT R4,|
00001a70  52 32 0a 20 4d 4f 56 4c  54 20 52 32 2c 52 31 31  |R2. MOVLT R2,R11|
00001a80  0a 5c 0a 20 53 54 52 20  52 31 2c 20 79 73 74 61  |.\. STR R1, ysta|
00001a90  72 74 0a 20 53 54 52 20  52 37 2c 20 79 65 6e 64  |rt. STR R7, yend|
00001aa0  0a 5c 0a 20 53 55 42 20  52 38 2c 52 36 2c 52 30  |.\. SUB R8,R6,R0|
00001ab0  0a 20 53 55 42 20 52 39  2c 52 37 2c 52 31 0a 20  |. SUB R9,R7,R1. |
00001ac0  53 55 42 20 52 31 30 2c  52 32 2c 52 30 0a 20 53  |SUB R10,R2,R0. S|
00001ad0  55 42 20 52 31 31 2c 52  33 2c 52 31 0a 5c 0a 20  |UB R11,R3,R1.\. |
00001ae0  4d 55 4c 20 52 31 32 2c  52 38 2c 52 31 31 0a 20  |MUL R12,R8,R11. |
00001af0  4d 55 4c 20 52 31 34 2c  52 31 30 2c 52 39 0a 20  |MUL R14,R10,R9. |
00001b00  53 55 42 20 52 31 32 2c  52 31 32 2c 52 31 34 0a  |SUB R12,R12,R14.|
00001b10  5c 0a 20 53 55 42 20 52  31 30 2c 52 34 2c 52 30  |\. SUB R10,R4,R0|
00001b20  0a 20 53 55 42 20 52 31  31 2c 52 35 2c 52 31 0a  |. SUB R11,R5,R1.|
00001b30  5c 0a 20 4d 55 4c 20 52  31 31 2c 52 38 2c 52 31  |\. MUL R11,R8,R1|
00001b40  31 0a 20 4d 55 4c 20 52  31 34 2c 52 31 30 2c 52  |1. MUL R14,R10,R|
00001b50  39 0a 20 53 55 42 20 52  31 31 2c 52 31 31 2c 52  |9. SUB R11,R11,R|
00001b60  31 34 0a 5c 0a 20 43 4d  50 20 52 31 32 2c 23 30  |14.\. CMP R12,#0|
00001b70  0a 20 4c 44 52 20 52 31  30 2c 20 74 72 61 63 65  |. LDR R10, trace|
00001b80  5f 61 64 64 72 65 73 73  0a 20 41 44 44 4c 54 20  |_address. ADDLT |
00001b90  52 38 2c 52 31 30 2c 23  34 0a 20 41 44 44 4c 54  |R8,R10,#4. ADDLT|
00001ba0  20 52 39 2c 52 31 30 2c  23 30 0a 20 41 44 44 47  | R9,R10,#0. ADDG|
00001bb0  45 20 52 38 2c 52 31 30  2c 23 30 0a 20 41 44 44  |E R8,R10,#0. ADD|
00001bc0  47 45 20 52 39 2c 52 31  30 2c 23 34 0a 20 53 54  |GE R9,R10,#4. ST|
00001bd0  4d 46 44 20 52 31 33 21  2c 20 7b 52 39 7d 0a 20  |MFD R13!, {R9}. |
00001be0  45 4f 52 20 52 31 31 2c  52 31 31 2c 52 31 32 0a  |EOR R11,R11,R12.|
00001bf0  20 43 4d 50 20 52 31 31  2c 23 30 0a 20 42 4c 54  | CMP R11,#0. BLT|
00001c00  20 67 72 61 70 68 69 63  73 5f 71 75 61 64 32 32  | graphics_quad22|
00001c10  0a 0a 0a 20 2e 67 72 61  70 68 69 63 73 5f 71 75  |... .graphics_qu|
00001c20  61 64 32 31 0a 20 4d 4f  56 20 52 31 30 2c 52 30  |ad21. MOV R10,R0|
00001c30  0a 20 53 55 42 20 52 31  31 2c 52 32 2c 52 30 0a  |. SUB R11,R2,R0.|
00001c40  20 53 55 42 53 20 52 31  32 2c 52 33 2c 52 31 0a  | SUBS R12,R3,R1.|
00001c50  20 42 4c 47 54 20 67 72  61 70 68 69 63 73 5f 74  | BLGT graphics_t|
00001c60  72 61 63 65 0a 20 4d 4f  56 20 52 31 30 2c 52 32  |race. MOV R10,R2|
00001c70  0a 20 53 55 42 20 52 31  31 2c 52 34 2c 52 32 0a  |. SUB R11,R4,R2.|
00001c80  20 53 55 42 53 20 52 31  32 2c 52 35 2c 52 33 0a  | SUBS R12,R5,R3.|
00001c90  20 42 4c 47 54 20 67 72  61 70 68 69 63 73 5f 74  | BLGT graphics_t|
00001ca0  72 61 63 65 0a 20 4d 4f  56 20 52 31 30 2c 52 34  |race. MOV R10,R4|
00001cb0  0a 20 53 55 42 20 52 31  31 2c 52 36 2c 52 34 0a  |. SUB R11,R6,R4.|
00001cc0  20 53 55 42 53 20 52 31  32 2c 52 37 2c 52 35 0a  | SUBS R12,R7,R5.|
00001cd0  20 42 4c 47 54 20 67 72  61 70 68 69 63 73 5f 74  | BLGT graphics_t|
00001ce0  72 61 63 65 0a 20 4c 44  4d 46 44 20 52 31 33 21  |race. LDMFD R13!|
00001cf0  2c 20 7b 52 38 7d 0a 20  4d 4f 56 20 52 31 30 2c  |, {R8}. MOV R10,|
00001d00  52 30 0a 20 53 55 42 20  52 31 31 2c 52 36 2c 52  |R0. SUB R11,R6,R|
00001d10  30 0a 20 53 55 42 53 20  52 31 32 2c 52 37 2c 52  |0. SUBS R12,R7,R|
00001d20  31 0a 20 42 4c 47 54 20  67 72 61 70 68 69 63 73  |1. BLGT graphics|
00001d30  5f 74 72 61 63 65 0a 20  4c 44 4d 46 44 20 52 31  |_trace. LDMFD R1|
00001d40  33 21 2c 20 7b 52 31 30  2d 52 31 32 2c 52 31 35  |3!, {R10-R12,R15|
00001d50  7d 0a 0a 0a 20 2e 67 72  61 70 68 69 63 73 5f 71  |}... .graphics_q|
00001d60  75 61 64 32 32 0a 20 4d  4f 56 20 52 31 30 2c 52  |uad22. MOV R10,R|
00001d70  30 0a 20 53 55 42 20 52  31 31 2c 52 32 2c 52 30  |0. SUB R11,R2,R0|
00001d80  0a 20 53 55 42 53 20 52  31 32 2c 52 33 2c 52 31  |. SUBS R12,R3,R1|
00001d90  0a 20 42 4c 47 54 20 67  72 61 70 68 69 63 73 5f  |. BLGT graphics_|
00001da0  74 72 61 63 65 0a 20 4d  4f 56 20 52 31 30 2c 52  |trace. MOV R10,R|
00001db0  32 0a 20 53 55 42 20 52  31 31 2c 52 36 2c 52 32  |2. SUB R11,R6,R2|
00001dc0  0a 20 53 55 42 53 20 52  31 32 2c 52 37 2c 52 33  |. SUBS R12,R7,R3|
00001dd0  0a 20 42 4c 47 54 20 67  72 61 70 68 69 63 73 5f  |. BLGT graphics_|
00001de0  74 72 61 63 65 0a 20 4c  44 4d 46 44 20 52 31 33  |trace. LDMFD R13|
00001df0  21 2c 20 7b 52 38 7d 0a  20 4d 4f 56 20 52 31 30  |!, {R8}. MOV R10|
00001e00  2c 52 30 0a 20 53 55 42  20 52 31 31 2c 52 34 2c  |,R0. SUB R11,R4,|
00001e10  52 30 0a 20 53 55 42 53  20 52 31 32 2c 52 35 2c  |R0. SUBS R12,R5,|
00001e20  52 31 0a 20 42 4c 47 54  20 67 72 61 70 68 69 63  |R1. BLGT graphic|
00001e30  73 5f 74 72 61 63 65 0a  20 4d 4f 56 20 52 31 30  |s_trace. MOV R10|
00001e40  2c 52 34 0a 20 53 55 42  20 52 31 31 2c 52 36 2c  |,R4. SUB R11,R6,|
00001e50  52 34 0a 20 53 55 42 53  20 52 31 32 2c 52 37 2c  |R4. SUBS R12,R7,|
00001e60  52 35 0a 20 42 4c 47 54  20 67 72 61 70 68 69 63  |R5. BLGT graphic|
00001e70  73 5f 74 72 61 63 65 0a  20 4c 44 4d 46 44 20 52  |s_trace. LDMFD R|
00001e80  31 33 21 2c 20 7b 52 31  30 2d 52 31 32 2c 52 31  |13!, {R10-R12,R1|
00001e90  35 7d 0a 0a 0a 0a 20 2e  67 72 61 70 68 69 63 73  |5}.... .graphics|
00001ea0  5f 74 72 61 63 65 0a 20  4c 44 52 20 52 39 2c 20  |_trace. LDR R9, |
00001eb0  72 65 63 69 70 5f 61 64  64 72 65 73 73 0a 20 4c  |recip_address. L|
00001ec0  44 52 20 52 39 2c 20 5b  52 39 2c 52 31 32 2c 4c  |DR R9, [R9,R12,L|
00001ed0  53 4c 20 23 32 5d 0a 20  4d 55 4c 20 52 31 31 2c  |SL #2]. MUL R11,|
00001ee0  52 39 2c 52 31 31 0a 20  4d 4f 56 20 52 31 30 2c  |R9,R11. MOV R10,|
00001ef0  52 31 30 2c 41 53 4c 20  23 31 36 0a 20 41 44 44  |R10,ASL #16. ADD|
00001f00  20 52 31 30 2c 52 31 30  2c 52 31 31 2c 41 53 52  | R10,R10,R11,ASR|
00001f10  20 23 31 0a 20 2e 67 72  61 70 68 69 63 73 5f 74  | #1. .graphics_t|
00001f20  72 61 63 65 5f 6d 61 69  6e 0a 20 4d 4f 56 20 52  |race_main. MOV R|
00001f30  39 2c 52 31 30 2c 41 53  52 20 23 31 36 0a 20 41  |9,R10,ASR #16. A|
00001f40  44 44 20 52 31 30 2c 52  31 30 2c 52 31 31 0a 20  |DD R10,R10,R11. |
00001f50  43 4d 50 20 52 39 2c 23  33 32 30 0a 20 4d 4f 56  |CMP R9,#320. MOV|
00001f60  47 54 20 52 39 2c 23 33  32 30 0a 20 53 55 42 47  |GT R9,#320. SUBG|
00001f70  54 20 52 39 2c 52 39 2c  23 31 0a 20 43 4d 4e 20  |T R9,R9,#1. CMN |
00001f80  52 39 2c 23 33 32 30 0a  20 4d 4f 56 4c 54 20 52  |R9,#320. MOVLT R|
00001f90  39 2c 23 30 0a 20 53 55  42 4c 54 20 52 39 2c 52  |9,#0. SUBLT R9,R|
00001fa0  39 2c 23 33 32 30 0a 20  53 54 52 20 52 39 2c 20  |9,#320. STR R9, |
00001fb0  5b 52 38 5d 2c 23 38 0a  20 53 55 42 53 20 52 31  |[R8],#8. SUBS R1|
00001fc0  32 2c 52 31 32 2c 23 31  0a 20 42 47 54 20 67 72  |2,R12,#1. BGT gr|
00001fd0  61 70 68 69 63 73 5f 74  72 61 63 65 5f 6d 61 69  |aphics_trace_mai|
00001fe0  6e 0a 20 4d 4f 56 20 52  31 35 2c 52 31 34 0a 0a  |n. MOV R15,R14..|
00001ff0  0a 0a 20 2e 79 73 74 61  72 74 20 20 20 20 45 51  |.. .ystart    EQ|
00002000  55 44 20 30 0a 20 2e 79  65 6e 64 20 20 20 20 20  |UD 0. .yend     |
00002010  45 51 55 44 20 30 0a 0a  20 2e 76 64 75 5f 61 64  |EQUD 0.. .vdu_ad|
00002020  64 72 65 73 73 20 20 20  20 20 20 20 20 20 45 51  |dress         EQ|
00002030  55 44 20 20 30 0a 20 2e  74 65 78 74 75 72 65 5f  |UD  0. .texture_|
00002040  61 64 64 72 65 73 73 20  20 20 20 45 51 55 44 20  |address    EQUD |
00002050  20 30 0a 20 2e 74 72 61  63 65 5f 61 64 64 72 65  | 0. .trace_addre|
00002060  73 73 20 20 20 20 20 20  45 51 55 44 20 20 74 72  |ss      EQUD  tr|
00002070  61 63 65 5f 64 61 74 61  0a 20 2e 64 69 76 5f 61  |ace_data. .div_a|
00002080  64 64 72 65 73 73 20 20  20 20 20 20 20 20 20 45  |ddress         E|
00002090  51 55 44 20 20 64 69 76  5f 64 61 74 61 0a 20 2e  |QUD  div_data. .|
000020a0  72 65 63 69 70 5f 61 64  64 72 65 73 73 20 20 20  |recip_address   |
000020b0  20 20 20 45 51 55 44 20  20 72 65 63 69 70 5f 64  |   EQUD  recip_d|
000020c0  61 74 61 0a 20 0a 20 5d  20 4e 45 58 54 70 61 73  |ata. . ] NEXTpas|
000020d0  73 0a 20 45 4e 44 50 52  4f 43 0a 0a 0a 0a 20 44  |s. ENDPROC.... D|
000020e0  45 46 20 50 52 4f 43 69  6e 69 74 0a 0a 20 44 49  |EF PROCinit.. DI|
000020f0  4d 20 74 65 78 74 75 72  65 24 28 32 30 29 0a 20  |M texture$(20). |
00002100  6d 3d 30 0a 20 52 45 50  45 41 54 0a 20 20 20 20  |m=0. REPEAT.    |
00002110  20 6d 2b 3d 31 0a 20 20  20 20 20 52 45 41 44 20  | m+=1.     READ |
00002120  6d 24 0a 20 20 20 20 20  74 65 78 74 75 72 65 24  |m$.     texture$|
00002130  28 6d 29 3d 6d 24 0a 20  55 4e 54 49 4c 20 6d 24  |(m)=m$. UNTIL m$|
00002140  3d 22 22 0a 20 74 65 78  74 75 72 65 73 3d 6d 2d  |="". textures=m-|
00002150  31 0a 0a 20 44 41 54 41  20 22 61 63 6f 72 6e 22  |1.. DATA "acorn"|
00002160  2c 20 22 61 72 72 6f 77  22 2c 20 22 66 75 6e 6b  |, "arrow", "funk|
00002170  79 64 72 61 77 22 2c 20  22 73 74 6f 6e 65 22 0a  |ydraw", "stone".|
00002180  20 44 41 54 41 20 22 22  0a 0a 0a 20 76 65 72 74  | DATA ""... vert|
00002190  69 63 65 73 3d 38 0a 20  66 61 63 65 73 3d 36 0a  |ices=8. faces=6.|
000021a0  0a 20 64 3d 30 0a 20 46  4f 52 20 6d 3d 31 20 54  |. d=0. FOR m=1 T|
000021b0  4f 20 34 2a 31 30 32 34  2d 31 0a 20 49 46 20 6d  |O 4*1024-1. IF m|
000021c0  3e 28 32 5e 64 29 20 20  64 2b 3d 31 0a 20 6d 61  |>(2^d)  d+=1. ma|
000021d0  6e 74 3d 28 31 3c 3c 28  31 35 2b 64 29 29 2f 6d  |nt=(1<<(15+d))/m|
000021e0  0a 20 21 28 64 69 76 5f  64 61 74 61 2b 6d 2a 34  |. !(div_data+m*4|
000021f0  29 3d 28 6d 61 6e 74 3c  3c 31 36 29 20 4f 52 20  |)=(mant<<16) OR |
00002200  64 0a 20 4e 45 58 54 0a  0a 20 46 4f 52 20 6d 3d  |d. NEXT.. FOR m=|
00002210  31 20 54 4f 20 34 2a 31  30 32 34 2d 31 0a 20 21  |1 TO 4*1024-1. !|
00002220  28 72 65 63 69 70 5f 64  61 74 61 2b 6d 2a 34 29  |(recip_data+m*4)|
00002230  3d 32 5e 31 36 2f 6d 0a  20 4e 45 58 54 0a 0a 20  |=2^16/m. NEXT.. |
00002240  6d 3d 76 65 72 74 65 78  5f 64 61 74 61 0a 20 46  |m=vertex_data. F|
00002250  4f 52 20 6e 3d 30 20 54  4f 20 76 65 72 74 69 63  |OR n=0 TO vertic|
00002260  65 73 2d 31 0a 20 52 45  41 44 20 78 2c 79 2c 7a  |es-1. READ x,y,z|
00002270  0a 20 6d 21 30 3d 78 0a  20 6d 21 34 3d 79 0a 20  |. m!0=x. m!4=y. |
00002280  6d 21 38 3d 7a 0a 20 6d  2b 3d 33 32 0a 20 4e 45  |m!8=z. m+=32. NE|
00002290  58 54 0a 0a 20 6d 3d 66  61 63 65 5f 64 61 74 61  |XT.. m=face_data|
000022a0  0a 20 46 4f 52 20 6e 3d  30 20 54 4f 20 66 61 63  |. FOR n=0 TO fac|
000022b0  65 73 2d 31 0a 20 52 45  41 44 20 6d 30 2c 6d 31  |es-1. READ m0,m1|
000022c0  2c 6d 32 2c 6d 33 2c 63  6f 6c 6f 75 72 0a 20 6d  |,m2,m3,colour. m|
000022d0  21 30 3d 6d 30 0a 20 6d  21 34 3d 6d 31 0a 20 6d  |!0=m0. m!4=m1. m|
000022e0  21 38 3d 6d 32 0a 20 6d  21 31 32 3d 6d 33 0a 20  |!8=m2. m!12=m3. |
000022f0  6d 21 31 36 3d 63 6f 6c  6f 75 72 0a 20 6d 2b 3d  |m!16=colour. m+=|
00002300  32 30 0a 20 4e 45 58 54  0a 20 45 4e 44 50 52 4f  |20. NEXT. ENDPRO|
00002310  43 0a 0a 0a 20 44 41 54  41 20 2d 35 31 32 2c 20  |C... DATA -512, |
00002320  20 20 35 31 32 2c 20 30  0a 20 44 41 54 41 20 20  |  512, 0. DATA  |
00002330  20 35 31 32 2c 20 20 20  35 31 32 2c 20 30 0a 20  | 512,   512, 0. |
00002340  44 41 54 41 20 20 20 35  31 32 2c 20 2d 35 31 32  |DATA   512, -512|
00002350  2c 20 30 0a 20 44 41 54  41 20 2d 35 31 32 2c 20  |, 0. DATA -512, |
00002360  2d 35 31 32 2c 20 30 0a  0a 20 44 41 54 41 20 2d  |-512, 0.. DATA -|
00002370  35 31 32 2c 20 20 20 35  31 32 2c 20 32 35 36 0a  |512,   512, 256.|
00002380  20 44 41 54 41 20 20 20  35 31 32 2c 20 20 20 35  | DATA   512,   5|
00002390  31 32 2c 20 32 35 36 0a  20 44 41 54 41 20 20 20  |12, 256. DATA   |
000023a0  35 31 32 2c 20 2d 35 31  32 2c 20 32 35 36 0a 20  |512, -512, 256. |
000023b0  44 41 54 41 20 2d 35 31  32 2c 20 2d 35 31 32 2c  |DATA -512, -512,|
000023c0  20 32 35 36 0a 0a 0a 20  44 41 54 41 20 34 2c 35  | 256... DATA 4,5|
000023d0  2c 31 2c 30 2c 32 30 0a  20 44 41 54 41 20 36 2c  |,1,0,20. DATA 6,|
000023e0  37 2c 33 2c 32 2c 32 30  0a 0a 20 44 41 54 41 20  |7,3,2,20.. DATA |
000023f0  35 2c 36 2c 32 2c 31 2c  31 38 0a 20 44 41 54 41  |5,6,2,1,18. DATA|
00002400  20 37 2c 34 2c 30 2c 33  2c 31 38 0a 0a 20 44 41  | 7,4,0,3,18.. DA|
00002410  54 41 20 37 2c 36 2c 35  2c 34 2c 31 36 0a 20 44  |TA 7,6,5,4,16. D|
00002420  41 54 41 20 30 2c 31 2c  32 2c 33 2c 31 36 0a 0a  |ATA 0,1,2,3,16..|
00002430  0a 0a 20 44 45 46 20 50  52 4f 43 72 6f 74 61 74  |.. DEF PROCrotat|
00002440  65 5f 76 65 63 74 6f 72  28 78 2c 20 79 2c 20 7a  |e_vector(x, y, z|
00002450  2c 20 52 45 54 55 52 4e  20 78 2c 20 52 45 54 55  |, RETURN x, RETU|
00002460  52 4e 20 79 2c 20 52 45  54 55 52 4e 20 7a 29 0a  |RN y, RETURN z).|
00002470  20 78 30 3d 78 2a 6d 7a  2d 79 2a 6e 7a 0a 20 79  | x0=x*mz-y*nz. y|
00002480  30 3d 78 2a 6e 7a 2b 79  2a 6d 7a 0a 0a 20 7a 30  |0=x*nz+y*mz.. z0|
00002490  3d 7a 2a 6d 79 2d 78 30  2a 6e 79 0a 20 78 3d 7a  |=z*my-x0*ny. x=z|
000024a0  2a 6e 79 2b 78 30 2a 6d  79 0a 0a 20 79 3d 79 30  |*ny+x0*my.. y=y0|
000024b0  2a 6d 78 2d 7a 30 2a 6e  78 0a 20 7a 3d 79 30 2a  |*mx-z0*nx. z=y0*|
000024c0  6e 78 2b 7a 30 2a 6d 78  0a 20 45 4e 44 50 52 4f  |nx+z0*mx. ENDPRO|
000024d0  43 0a                                             |C.|
000024d2