Home » Archimedes archive » Acorn User » AU 1998-09.adf » Regulars » StarInfo/Lowe/arm_bg5
StarInfo/Lowe/arm_bg5
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 1998-09.adf » Regulars |
| Filename: | StarInfo/Lowe/arm_bg5 |
| Read OK: | ✔ |
| File size: | 0F27 bytes |
| Load address: | 0000 |
| Exec address: | 0000 |
File contents
10REM warping background display
20REM (c) alan lowe, 1997
30
40PROCinitialise
50PROCcreate_sin_and_cos
60PROCassemble
80CLS
90REPEAT
100 FOR C%=0 TO 360 STEP 4
110 E%=1
120 CALL code%
130 NEXT C%
140UNTIL FALSE
150END
160
170DEF PROCinitialise
180 MODE 15:MODE 13:OFF
190 DIM texture% 81920+56
200 DIM code% 4096
210 DIM block% 27
220 DIM sine_table% 360*8
230 DIM cosine_table% 360*8
240 DIM stack% 256
250 block%!0=148
260 block%!4=7
270 block%!8=-1
280 SYS "OS_ReadVduVariables",block%,block%+12
290 screen_base%=block%!12
300OSCLI"LOAD <bgdistort$dir>.export "+STR$~(texture%)
310ENDPROC
320
330DEF PROCcreate_sin_and_cos
340 counter%=0
350 FOR angle=0 TO 360*2 STEP 1
360 sine_table%!(counter%)=128+100*SIN(RAD angle)*COS(RAD angle)
370 cosine_table%!(counter%)=128+100*COS(RAD angle)*COS(RAD angle)
380 counter%+=4
390 NEXT angle
400ENDPROC
410
420DEF PROCassemble
430FOR pass=0 TO 2 STEP 2
440P%=code%
450[
460 OPT pass
470.return EQUD 0
480.stack EQUD stack%
490.screen EQUD screen_base%
500.sint EQUD sine_table%
510.cost EQUD cosine_table%
520.texture EQUD texture%
530.num287 EQUD 287
540
550.start STR r14,return
560 LDR r12,stack
570 MOV r0,#32
580 MOV r1,#0
590 ;MOV r2,#0
600.loop LDR r11,screen
610 CMP r4,#1
620 ;ADDEQ r11,r11,#81920
630 ADD r9,r1,r1,LSL #2
640 ADD r9,r11,r9,LSL #6
650 BL getxandy
660 STRB r10,[r9,r0]
670 ADD r0,r0,#1
680 STRB r10,[r9,r0]
690 ADD r0,r0,#1
692 STRB r10,[r9,r0]
694 ADD r0,r0,#1
695 STRB r10,[r9,r0]
696 ADD r0,r0,#1
700
710 LDR r5,num287
720 CMP r0,r5
730 BLT loop
740 MOV r0,#32
750 ADD r1,r1,#2
760 CMP r1,#200
770 BLT loop
780 ADD r2,r2,#2
790 MOV r1,#0
800 ;CMP r2,#356
810 ;BLE loop
820.finish LDR r15,return
830
840; on entry r0=x , r1=y , r2=wobble factor
850; on exit r10=colour
860
870.getxandy STMIA r12!,{r14,r0-r9,r11}
880
890 LDR r11,sint
900 ADD r3,r0,r2
910 MOV r3,r3,LSL #2
920 LDR r4,[r11,r3]
930 MUL r3,r4,r1
940 MOV r3,r3,LSR #8
950 ADD r8,r3,r0 ; r8=x coordinate
960 LDR r11,cost
970 ADD r3,r1,r2
980 MOV r3,r3,LSL #2
990 LDR r4,[r11,r3]
1000 MUL r3,r4,r0
1010 MOV r3,r3,LSR #8
1020 ADD r9,r3,r1 ; r9=y coordinate
1030
1040 MOV r0,#320
1050 MOV r1,#0
1060 MOV r2,#255
1070
1080 MOV r8,r8,LSR #1
1090 MOV r9,r9,LSR #1
1100
1110;.clamp CMP r8,#320
1120; SUBGT r8,r0,r8
1130; CMP r8,#0
1140; MVNLT r8,r8
1150; CMP r9,#255
1160; SUBGT r9,r2,r9
1170; CMP r9,#0
1180; MVNLT r9,r9
1190; MOV r10,#0
1200 LDR r11,texture
1210 ADD r11,r11,#56
1220
1230 ADD r7,r9,r9,LSL #2
1240 ADD r7,r11,r7,LSL #6
1250 LDRB r10,[r7,r8]
1260
1270 LDMDB r12!,{r0-r9,r11,PC}
1280
1290
1300]
1310NEXT pass
1320ENDPROC
1330
1340DEF PROCloadsprites(spritefile$,makearray$)
1350O$="OS_SpriteOp"
1360file%=OPENIN(spritefile$)
1370size%=EXT#file%+64
1380CLOSE#file%
1390IF makearray$="Y" THEN PROCmakearray(size%)
1400SYS O$,256+9,area%
1410SYS O$,256+10,area%,spritefile$
1420ENDPROC
1430
1440DEF PROCmakearray(size%)
1450DIM area% size%
1460area%!0=size%
1470ENDPROC
1480
1490DEF PROCps(sprite$,X,Y,mask)
1500SYS O$,256+34,area%,sprite$,X,Y,mask
1510ENDPROC
1520
� warping background display
� (c) alan lowe, 1997
(�initialise
2�create_sin_and_cos
<
�assemble
P�
Z�
d � C%=0 � 360 � 4
n
E%=1
x
� code%
� � C%
�� �
��
�
�� �initialise
� � 15:� 13:�
� � texture% 81920+56
� � code% 4096
� � block% 27
� � sine_table% 360*8
� � cosine_table% 360*8
� � stack% 256
� block%!0=148
block%!4=7
block%!8=-1
. ș "OS_ReadVduVariables",block%,block%+12
" screen_base%=block%!12
,0�"LOAD <bgdistort$dir>.export "+�~(texture%)
6�
@
J� �create_sin_and_cos
T counter%=0
^ � angle=0 � 360*2 � 1
h: sine_table%!(counter%)=128+100*�(� angle)*�(� angle)
r< cosine_table%!(counter%)=128+100*�(� angle)*�(� angle)
| counter%+=4
� � angle
��
�
�� �assemble
�� pass=0 � 2 � 2
� P%=code%
�[
� OPT pass
�.return EQUD 0
� .stack EQUD stack%
�$.screen EQUD screen_base%
�#.sint EQUD sine_table%
�%.cost EQUD cosine_table%
.texture EQUD texture%
.num287 EQUD 287
&".start STR r14,return
0! LDR r12,stack
: MOV r0,#32
D MOV r1,#0
N ;MOV r2,#0
X".loop LDR r11,screen
b CMP r4,#1
l' ;ADDEQ r11,r11,#81920
v' ADD r9,r1,r1,LSL #2
�( ADD r9,r11,r9,LSL #6
� BL getxandy
�# STRB r10,[r9,r0]
� ADD r0,r0,#1
�# STRB r10,[r9,r0]
� ADD r0,r0,#1
�# STRB r10,[r9,r0]
� ADD r0,r0,#1
�# STRB r10,[r9,r0]
� ADD r0,r0,#1
�
�! LDR r5,num287
� CMP r0,r5
� BLT loop
� MOV r0,#32
� ADD r1,r1,#2
� CMP r1,#200
BLT loop
ADD r2,r2,#2
MOV r1,#0
;CMP r2,#356
* ;BLE loop
4".finish LDR r15,return
>
H-; on entry r0=x , r1=y , r2=wobble factor
R; on exit r10=colour
\
f,.getxandy STMIA r12!,{r14,r0-r9,r11}
p
z LDR r11,sint
� ADD r3,r0,r2
�$ MOV r3,r3,LSL #2
�# LDR r4,[r11,r3]
� MUL r3,r4,r1
�$ MOV r3,r3,LSR #8
�; ADD r8,r3,r0 ; r8=x coordinate
� LDR r11,cost
� ADD r3,r1,r2
�$ MOV r3,r3,LSL #2
�# LDR r4,[r11,r3]
� MUL r3,r4,r0
�$ MOV r3,r3,LSR #8
�; ADD r9,r3,r1 ; r9=y coordinate
MOV r0,#320
MOV r1,#0
$ MOV r2,#255
.
8$ MOV r8,r8,LSR #1
B$ MOV r9,r9,LSR #1
L
V ;.clamp CMP r8,#320
`!; SUBGT r8,r0,r8
j ; CMP r8,#0
t ; MVNLT r8,r8
~ ; CMP r9,#255
�!; SUBGT r9,r2,r9
� ; CMP r9,#0
� ; MVNLT r9,r9
� ; MOV r10,#0
�# LDR r11,texture
�# ADD r11,r11,#56
�
�' ADD r7,r9,r9,LSL #2
�( ADD r7,r11,r7,LSL #6
�# LDRB r10,[r7,r8]
�
�+ LDMDB r12!,{r0-r9,r11,PC}
]
� pass
(�
2
<*� �loadsprites(spritefile$,makearray$)
FO$="OS_SpriteOp"
Pfile%=�(spritefile$)
Zsize%=�#file%+64
d �#file%
n(� makearray$="Y" � �makearray(size%)
xș O$,256+9,area%
�"ș O$,256+10,area%,spritefile$
��
�
�� �makearray(size%)
�� area% size%
�area%!0=size%
��
�
�� �ps(sprite$,X,Y,mask)
�'ș O$,256+34,area%,sprite$,X,Y,mask
��
�
� 00000000 0d 00 0a 20 f4 20 77 61 72 70 69 6e 67 20 62 61 |... . warping ba|
00000010 63 6b 67 72 6f 75 6e 64 20 64 69 73 70 6c 61 79 |ckground display|
00000020 0d 00 14 19 f4 20 28 63 29 20 61 6c 61 6e 20 6c |..... (c) alan l|
00000030 6f 77 65 2c 20 31 39 39 37 0d 00 1e 04 0d 00 28 |owe, 1997......(|
00000040 0f f2 69 6e 69 74 69 61 6c 69 73 65 0d 00 32 17 |..initialise..2.|
00000050 f2 63 72 65 61 74 65 5f 73 69 6e 5f 61 6e 64 5f |.create_sin_and_|
00000060 63 6f 73 0d 00 3c 0d f2 61 73 73 65 6d 62 6c 65 |cos..<..assemble|
00000070 0d 00 50 05 db 0d 00 5a 05 f5 0d 00 64 15 20 e3 |..P....Z....d. .|
00000080 20 43 25 3d 30 20 b8 20 33 36 30 20 88 20 34 0d | C%=0 . 360 . 4.|
00000090 00 6e 0a 20 20 45 25 3d 31 0d 00 78 0d 20 20 d6 |.n. E%=1..x. .|
000000a0 20 63 6f 64 65 25 0d 00 82 09 20 ed 20 43 25 0d | code%.... . C%.|
000000b0 00 8c 07 fd 20 a3 0d 00 96 05 e0 0d 00 a0 04 0d |.... ...........|
000000c0 00 aa 11 dd 20 f2 69 6e 69 74 69 61 6c 69 73 65 |.... .initialise|
000000d0 0d 00 b4 10 20 eb 20 31 35 3a eb 20 31 33 3a 87 |.... . 15:. 13:.|
000000e0 0d 00 be 18 20 de 20 74 65 78 74 75 72 65 25 20 |.... . texture% |
000000f0 38 31 39 32 30 2b 35 36 0d 00 c8 11 20 de 20 63 |81920+56.... . c|
00000100 6f 64 65 25 20 34 30 39 36 0d 00 d2 10 20 de 20 |ode% 4096.... . |
00000110 62 6c 6f 63 6b 25 20 32 37 0d 00 dc 18 20 de 20 |block% 27.... . |
00000120 73 69 6e 65 5f 74 61 62 6c 65 25 20 33 36 30 2a |sine_table% 360*|
00000130 38 0d 00 e6 1a 20 de 20 63 6f 73 69 6e 65 5f 74 |8.... . cosine_t|
00000140 61 62 6c 65 25 20 33 36 30 2a 38 0d 00 f0 11 20 |able% 360*8.... |
00000150 de 20 73 74 61 63 6b 25 20 32 35 36 0d 00 fa 11 |. stack% 256....|
00000160 20 62 6c 6f 63 6b 25 21 30 3d 31 34 38 0d 01 04 | block%!0=148...|
00000170 0f 20 62 6c 6f 63 6b 25 21 34 3d 37 0d 01 0e 10 |. block%!4=7....|
00000180 20 62 6c 6f 63 6b 25 21 38 3d 2d 31 0d 01 18 2e | block%!8=-1....|
00000190 20 c8 99 20 22 4f 53 5f 52 65 61 64 56 64 75 56 | .. "OS_ReadVduV|
000001a0 61 72 69 61 62 6c 65 73 22 2c 62 6c 6f 63 6b 25 |ariables",block%|
000001b0 2c 62 6c 6f 63 6b 25 2b 31 32 0d 01 22 1b 20 73 |,block%+12..". s|
000001c0 63 72 65 65 6e 5f 62 61 73 65 25 3d 62 6c 6f 63 |creen_base%=bloc|
000001d0 6b 25 21 31 32 0d 01 2c 30 ff 22 4c 4f 41 44 20 |k%!12..,0."LOAD |
000001e0 3c 62 67 64 69 73 74 6f 72 74 24 64 69 72 3e 2e |<bgdistort$dir>.|
000001f0 65 78 70 6f 72 74 20 22 2b c3 7e 28 74 65 78 74 |export "+.~(text|
00000200 75 72 65 25 29 0d 01 36 05 e1 0d 01 40 04 0d 01 |ure%)..6....@...|
00000210 4a 19 dd 20 f2 63 72 65 61 74 65 5f 73 69 6e 5f |J.. .create_sin_|
00000220 61 6e 64 5f 63 6f 73 0d 01 54 0f 20 63 6f 75 6e |and_cos..T. coun|
00000230 74 65 72 25 3d 30 0d 01 5e 1a 20 e3 20 61 6e 67 |ter%=0..^. . ang|
00000240 6c 65 3d 30 20 b8 20 33 36 30 2a 32 20 88 20 31 |le=0 . 360*2 . 1|
00000250 0d 01 68 3a 20 20 73 69 6e 65 5f 74 61 62 6c 65 |..h: sine_table|
00000260 25 21 28 63 6f 75 6e 74 65 72 25 29 3d 31 32 38 |%!(counter%)=128|
00000270 2b 31 30 30 2a b5 28 b2 20 61 6e 67 6c 65 29 2a |+100*.(. angle)*|
00000280 9b 28 b2 20 61 6e 67 6c 65 29 0d 01 72 3c 20 20 |.(. angle)..r< |
00000290 63 6f 73 69 6e 65 5f 74 61 62 6c 65 25 21 28 63 |cosine_table%!(c|
000002a0 6f 75 6e 74 65 72 25 29 3d 31 32 38 2b 31 30 30 |ounter%)=128+100|
000002b0 2a 9b 28 b2 20 61 6e 67 6c 65 29 2a 9b 28 b2 20 |*.(. angle)*.(. |
000002c0 61 6e 67 6c 65 29 0d 01 7c 11 20 20 63 6f 75 6e |angle)..|. coun|
000002d0 74 65 72 25 2b 3d 34 0d 01 86 0c 20 ed 20 61 6e |ter%+=4.... . an|
000002e0 67 6c 65 0d 01 90 05 e1 0d 01 9a 04 0d 01 a4 0f |gle.............|
000002f0 dd 20 f2 61 73 73 65 6d 62 6c 65 0d 01 ae 14 e3 |. .assemble.....|
00000300 20 70 61 73 73 3d 30 20 b8 20 32 20 88 20 32 0d | pass=0 . 2 . 2.|
00000310 01 b8 0c 50 25 3d 63 6f 64 65 25 0d 01 c2 05 5b |...P%=code%....[|
00000320 0d 01 cc 1c 20 20 20 20 20 20 20 20 20 20 4f 50 |.... OP|
00000330 54 20 20 20 20 20 20 20 70 61 73 73 0d 01 d6 19 |T pass....|
00000340 2e 72 65 74 75 72 6e 20 20 20 45 51 55 44 20 20 |.return EQUD |
00000350 20 20 20 20 30 0d 01 e0 1e 2e 73 74 61 63 6b 20 | 0.....stack |
00000360 20 20 20 45 51 55 44 20 20 20 20 20 20 73 74 61 | EQUD sta|
00000370 63 6b 25 0d 01 ea 24 2e 73 63 72 65 65 6e 20 20 |ck%...$.screen |
00000380 20 45 51 55 44 20 20 20 20 20 20 73 63 72 65 65 | EQUD scree|
00000390 6e 5f 62 61 73 65 25 0d 01 f4 23 2e 73 69 6e 74 |n_base%...#.sint|
000003a0 20 20 20 20 20 45 51 55 44 20 20 20 20 20 20 73 | EQUD s|
000003b0 69 6e 65 5f 74 61 62 6c 65 25 0d 01 fe 25 2e 63 |ine_table%...%.c|
000003c0 6f 73 74 20 20 20 20 20 45 51 55 44 20 20 20 20 |ost EQUD |
000003d0 20 20 63 6f 73 69 6e 65 5f 74 61 62 6c 65 25 0d | cosine_table%.|
000003e0 02 08 20 2e 74 65 78 74 75 72 65 20 20 45 51 55 |.. .texture EQU|
000003f0 44 20 20 20 20 20 20 74 65 78 74 75 72 65 25 0d |D texture%.|
00000400 02 12 1b 2e 6e 75 6d 32 38 37 20 20 20 45 51 55 |....num287 EQU|
00000410 44 20 20 20 20 20 20 32 38 37 0d 02 1c 04 0d 02 |D 287......|
00000420 26 22 2e 73 74 61 72 74 20 20 20 20 53 54 52 20 |&".start STR |
00000430 20 20 20 20 20 20 72 31 34 2c 72 65 74 75 72 6e | r14,return|
00000440 0d 02 30 21 20 20 20 20 20 20 20 20 20 20 4c 44 |..0! LD|
00000450 52 20 20 20 20 20 20 20 72 31 32 2c 73 74 61 63 |R r12,stac|
00000460 6b 0d 02 3a 1e 20 20 20 20 20 20 20 20 20 20 4d |k..:. M|
00000470 4f 56 20 20 20 20 20 20 20 72 30 2c 23 33 32 0d |OV r0,#32.|
00000480 02 44 1d 20 20 20 20 20 20 20 20 20 20 4d 4f 56 |.D. MOV|
00000490 20 20 20 20 20 20 20 72 31 2c 23 30 0d 02 4e 1e | r1,#0..N.|
000004a0 20 20 20 20 20 20 20 20 20 20 3b 4d 4f 56 20 20 | ;MOV |
000004b0 20 20 20 20 20 72 32 2c 23 30 0d 02 58 22 2e 6c | r2,#0..X".l|
000004c0 6f 6f 70 20 20 20 20 20 4c 44 52 20 20 20 20 20 |oop LDR |
000004d0 20 20 72 31 31 2c 73 63 72 65 65 6e 0d 02 62 1d | r11,screen..b.|
000004e0 20 20 20 20 20 20 20 20 20 20 43 4d 50 20 20 20 | CMP |
000004f0 20 20 20 20 72 34 2c 23 31 0d 02 6c 27 20 20 20 | r4,#1..l' |
00000500 20 20 20 20 20 20 20 3b 41 44 44 45 51 20 20 20 | ;ADDEQ |
00000510 20 20 72 31 31 2c 72 31 31 2c 23 38 31 39 32 30 | r11,r11,#81920|
00000520 0d 02 76 27 20 20 20 20 20 20 20 20 20 20 41 44 |..v' AD|
00000530 44 20 20 20 20 20 20 20 72 39 2c 72 31 2c 72 31 |D r9,r1,r1|
00000540 2c 4c 53 4c 20 23 32 0d 02 80 28 20 20 20 20 20 |,LSL #2...( |
00000550 20 20 20 20 20 41 44 44 20 20 20 20 20 20 20 72 | ADD r|
00000560 39 2c 72 31 31 2c 72 39 2c 4c 53 4c 20 23 36 0d |9,r11,r9,LSL #6.|
00000570 02 8a 20 20 20 20 20 20 20 20 20 20 20 42 4c 20 |.. BL |
00000580 20 20 20 20 20 20 20 67 65 74 78 61 6e 64 79 0d | getxandy.|
00000590 02 94 23 20 20 20 20 20 20 20 20 20 20 53 54 52 |..# STR|
000005a0 42 20 20 20 20 20 20 72 31 30 2c 5b 72 39 2c 72 |B r10,[r9,r|
000005b0 30 5d 0d 02 9e 20 20 20 20 20 20 20 20 20 20 20 |0]... |
000005c0 41 44 44 20 20 20 20 20 20 20 72 30 2c 72 30 2c |ADD r0,r0,|
000005d0 23 31 0d 02 a8 23 20 20 20 20 20 20 20 20 20 20 |#1...# |
000005e0 53 54 52 42 20 20 20 20 20 20 72 31 30 2c 5b 72 |STRB r10,[r|
000005f0 39 2c 72 30 5d 0d 02 b2 20 20 20 20 20 20 20 20 |9,r0]... |
00000600 20 20 20 41 44 44 20 20 20 20 20 20 20 72 30 2c | ADD r0,|
00000610 72 30 2c 23 31 0d 02 b4 23 20 20 20 20 20 20 20 |r0,#1...# |
00000620 20 20 20 53 54 52 42 20 20 20 20 20 20 72 31 30 | STRB r10|
00000630 2c 5b 72 39 2c 72 30 5d 0d 02 b6 20 20 20 20 20 |,[r9,r0]... |
00000640 20 20 20 20 20 20 41 44 44 20 20 20 20 20 20 20 | ADD |
00000650 72 30 2c 72 30 2c 23 31 0d 02 b7 23 20 20 20 20 |r0,r0,#1...# |
00000660 20 20 20 20 20 20 53 54 52 42 20 20 20 20 20 20 | STRB |
00000670 72 31 30 2c 5b 72 39 2c 72 30 5d 0d 02 b8 20 20 |r10,[r9,r0]... |
00000680 20 20 20 20 20 20 20 20 20 41 44 44 20 20 20 20 | ADD |
00000690 20 20 20 72 30 2c 72 30 2c 23 31 0d 02 bc 0e 20 | r0,r0,#1.... |
000006a0 20 20 20 20 20 20 20 20 20 0d 02 c6 21 20 20 20 | ...! |
000006b0 20 20 20 20 20 20 20 4c 44 52 20 20 20 20 20 20 | LDR |
000006c0 20 72 35 2c 6e 75 6d 32 38 37 0d 02 d0 1d 20 20 | r5,num287.... |
000006d0 20 20 20 20 20 20 20 20 43 4d 50 20 20 20 20 20 | CMP |
000006e0 20 20 72 30 2c 72 35 0d 02 da 1c 20 20 20 20 20 | r0,r5.... |
000006f0 20 20 20 20 20 42 4c 54 20 20 20 20 20 20 20 6c | BLT l|
00000700 6f 6f 70 0d 02 e4 1e 20 20 20 20 20 20 20 20 20 |oop.... |
00000710 20 4d 4f 56 20 20 20 20 20 20 20 72 30 2c 23 33 | MOV r0,#3|
00000720 32 0d 02 ee 20 20 20 20 20 20 20 20 20 20 20 41 |2... A|
00000730 44 44 20 20 20 20 20 20 20 72 31 2c 72 31 2c 23 |DD r1,r1,#|
00000740 32 0d 02 f8 1f 20 20 20 20 20 20 20 20 20 20 43 |2.... C|
00000750 4d 50 20 20 20 20 20 20 20 72 31 2c 23 32 30 30 |MP r1,#200|
00000760 0d 03 02 1c 20 20 20 20 20 20 20 20 20 20 42 4c |.... BL|
00000770 54 20 20 20 20 20 20 20 6c 6f 6f 70 0d 03 0c 20 |T loop... |
00000780 20 20 20 20 20 20 20 20 20 20 41 44 44 20 20 20 | ADD |
00000790 20 20 20 20 72 32 2c 72 32 2c 23 32 0d 03 16 1d | r2,r2,#2....|
000007a0 20 20 20 20 20 20 20 20 20 20 4d 4f 56 20 20 20 | MOV |
000007b0 20 20 20 20 72 31 2c 23 30 0d 03 20 20 20 20 20 | r1,#0.. |
000007c0 20 20 20 20 20 20 20 3b 43 4d 50 20 20 20 20 20 | ;CMP |
000007d0 20 20 72 32 2c 23 33 35 36 0d 03 2a 1d 20 20 20 | r2,#356..*. |
000007e0 20 20 20 20 20 20 20 3b 42 4c 45 20 20 20 20 20 | ;BLE |
000007f0 20 20 6c 6f 6f 70 0d 03 34 22 2e 66 69 6e 69 73 | loop..4".finis|
00000800 68 20 20 20 4c 44 52 20 20 20 20 20 20 20 72 31 |h LDR r1|
00000810 35 2c 72 65 74 75 72 6e 0d 03 3e 04 0d 03 48 2d |5,return..>...H-|
00000820 3b 20 6f 6e 20 65 6e 74 72 79 20 72 30 3d 78 20 |; on entry r0=x |
00000830 2c 20 72 31 3d 79 20 2c 20 72 32 3d 77 6f 62 62 |, r1=y , r2=wobb|
00000840 6c 65 20 66 61 63 74 6f 72 0d 03 52 19 3b 20 6f |le factor..R.; o|
00000850 6e 20 65 78 69 74 20 20 72 31 30 3d 63 6f 6c 6f |n exit r10=colo|
00000860 75 72 0d 03 5c 04 0d 03 66 2c 2e 67 65 74 78 61 |ur..\...f,.getxa|
00000870 6e 64 79 20 53 54 4d 49 41 20 20 20 20 20 72 31 |ndy STMIA r1|
00000880 32 21 2c 7b 72 31 34 2c 72 30 2d 72 39 2c 72 31 |2!,{r14,r0-r9,r1|
00000890 31 7d 0d 03 70 04 0d 03 7a 20 20 20 20 20 20 20 |1}..p...z |
000008a0 20 20 20 20 4c 44 52 20 20 20 20 20 20 20 72 31 | LDR r1|
000008b0 31 2c 73 69 6e 74 0d 03 84 20 20 20 20 20 20 20 |1,sint... |
000008c0 20 20 20 20 41 44 44 20 20 20 20 20 20 20 72 33 | ADD r3|
000008d0 2c 72 30 2c 72 32 0d 03 8e 24 20 20 20 20 20 20 |,r0,r2...$ |
000008e0 20 20 20 20 4d 4f 56 20 20 20 20 20 20 20 72 33 | MOV r3|
000008f0 2c 72 33 2c 4c 53 4c 20 23 32 0d 03 98 23 20 20 |,r3,LSL #2...# |
00000900 20 20 20 20 20 20 20 20 4c 44 52 20 20 20 20 20 | LDR |
00000910 20 20 72 34 2c 5b 72 31 31 2c 72 33 5d 0d 03 a2 | r4,[r11,r3]...|
00000920 20 20 20 20 20 20 20 20 20 20 20 4d 55 4c 20 20 | MUL |
00000930 20 20 20 20 20 72 33 2c 72 34 2c 72 31 0d 03 ac | r3,r4,r1...|
00000940 24 20 20 20 20 20 20 20 20 20 20 4d 4f 56 20 20 |$ MOV |
00000950 20 20 20 20 20 72 33 2c 72 33 2c 4c 53 52 20 23 | r3,r3,LSR #|
00000960 38 0d 03 b6 3b 20 20 20 20 20 20 20 20 20 20 41 |8...; A|
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