Home » Archimedes archive » Acorn User » AU 1994-05.adf » !Risc_Risc » Sheet
Sheet
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 1994-05.adf » !Risc_Risc |
| Filename: | Sheet |
| Read OK: | ✔ |
| File size: | 0754 bytes |
| Load address: | 0000 |
| Exec address: | 0000 |
File contents
10REM >Sheet
20MODE "X320 Y256 C16M":OFF
30size=128
40COLOUR 128:CLS
50MOUSE OFF
60PROCass
70DIM rf(3),gf(3),bf(3)
80FOR i=0 TO 3
90 rf(i)=(RND(1)*5+1)
100 gf(i)=(RND(1)*5+1)
110 bf(i)=(RND(1)*5+1)
120NEXT
130a=0
140REPEAT
150 c=cols
160 FOR i=0 TO 3
170 c?0=127+127*SIN(a*rf(i))
180 c?1=127+127*SIN(a*gf(i))
190 c?2=127+127*SIN(a*bf(i))
200 c+=4
210 NEXT
220 WAIT:CALL go
230 a+=0.02
240UNTIL 0
250
260
270!rgbT=&000000
280!rgbB=&FF0000
290!rgbL=&000000
300!rgbR=&0000FF
310CALL go
320END
330:
340DEF PROCass
350DIM code 4000
360sp=13
370lr=14
380pc=15
390FOR pass=0 TO 2 STEP 2:P%=code
400[OPT pass
410.go
420 STMFD sp !,{lr}
430 STR sp, SP
440
450 LDR r12,scr
460 MOV r8,#size-1
470
480.row
490
500 LDRB r0,rgbT+0
510 LDRB r1,rgbB+0
520 FNdiv(0,1,8,2)
530 LDRB r0,rgbT+1
540 LDRB r1,rgbB+1
550 FNdiv(0,1,8,3)
560 LDRB r0,rgbT+2
570 LDRB r1,rgbB+2
580 FNdiv(0,1,8,4)
590
600 MOV r11,r12
610 MOV r9,#size-1
620
630 LDRB r0,rgbL+0
640 LDRB r1,rgbR+0
650
660 LDRB r5,rgbL+1
670 LDRB r6,rgbR+1
680
690 LDRB r7,rgbL+2
700 LDRB r10,rgbR+2
710.col
720
730 FNdiv(0,1,9,lr)
740
750 ADD lr,r2,lr
760 MOV r13,lr,LSR #1
770
780 FNdiv(5,6,9,lr)
790
800 ADD lr,r3,lr
810 MOV lr,lr,LSR #1
820 ORR r13,r13,lr,LSL #8
830
840 FNdiv(7,10,9,lr)
850
860 ADD lr,r4,lr
870 MOV lr,lr,LSR #1
880 ORR r13,r13,lr,LSL #16
890
900 STR r13,[r11],#4
910
920 SUBS r9,r9,#1
930 BPL col
940
950 ADD r12,r12,#320*4
960
970 SUBS r8,r8,#1
980 BPL row
990
1000 LDR sp,SP
1010 LDMFD sp !,{pc}
1020
1030
1040
1050.SP EQUD 0
1060
1070
1080.scr EQUD 148
1090 EQUD -1
1100.cols
1110.rgbT EQUD 0
1120.rgbB EQUD 0
1130.rgbL EQUD 0
1140.rgbR EQUD 0
1150]
1160NEXT
1170SYS "OS_ReadVduVariables",scr,scr
1180!scr=!scr+((256-size)/2)*320*4+((320-size)/2)*4
1190ENDPROC
1200:
1210DEF FNdiv(a,b,d,r)
1220[OPT pass
1230 SUB r,a,b
1240 MUL r,d,r
1250 ADD r,b,r,ASR #(LNsize/LN2)
1260]
1270=""
� >Sheet
� "X320 Y256 C16M":�
size=128
( � 128:�
2ȗ �
<�ass
F� rf(3),gf(3),bf(3)
P
� i=0 � 3
Z rf(i)=(�(1)*5+1)
d gf(i)=(�(1)*5+1)
n bf(i)=(�(1)*5+1)
x�
�a=0
��
� c=cols
� � i=0 � 3
� c?0=127+127*�(a*rf(i))
� c?1=127+127*�(a*gf(i))
� c?2=127+127*�(a*bf(i))
�
c+=4
� �
� Ȗ:� go
� a+=0.02
�� 0
�
!rgbT=&000000
!rgbB=&FF0000
"!rgbL=&000000
,!rgbR=&0000FF
6� go
@�
J:
T
� �ass
^� code 4000
h sp=13
r lr=14
| pc=15
� � pass=0 � 2 � 2:P%=code
�
[OPT pass
�.go
� STMFD sp !,{lr}
� STR sp, SP
�
� LDR r12,scr
� MOV r8,#size-1
�
�.row
�
� LDRB r0,rgbT+0
� LDRB r1,rgbB+0
�div(0,1,8,2)
LDRB r0,rgbT+1
LDRB r1,rgbB+1
& �div(0,1,8,3)
0 LDRB r0,rgbT+2
: LDRB r1,rgbB+2
D �div(0,1,8,4)
N
X MOV r11,r12
b MOV r9,#size-1
l
v LDRB r0,rgbL+0
� LDRB r1,rgbR+0
�
� LDRB r5,rgbL+1
� LDRB r6,rgbR+1
�
� LDRB r7,rgbL+2
� LDRB r10,rgbR+2
�.col
�
� �div(0,1,9,lr)
�
� ADD lr,r2,lr
� MOV r13,lr,LSR #1
�div(5,6,9,lr)
ADD lr,r3,lr
* MOV lr,lr,LSR #1
4 �R r13,r13,lr,LSL #8
>
H �div(7,10,9,lr)
R
\ ADD lr,r4,lr
f MOV lr,lr,LSR #1
p �R r13,r13,lr,LSL #16
z
� STR r13,[r11],#4
�
� SUBS r9,r9,#1
� BPL col
�
� ADD r12,r12,#320*4
�
� SUBS r8,r8,#1
� BPL row
�
� LDR sp,SP
� LDMFD sp !,{pc}
�
.SP EQUD 0
$
.
8.scr EQUD 148
B EQUD -1
L .cols
V.rgbT EQUD 0
`.rgbB EQUD 0
j.rgbL EQUD 0
t.rgbR EQUD 0
~]
��
�$ș "OS_ReadVduVariables",scr,scr
�3!scr=!scr+((256-size)/2)*320*4+((320-size)/2)*4
��
�:
�� �div(a,b,d,r)
�
[OPT pass
� SUB r,a,b
� MUL r,d,r
�" ADD r,b,r,ASR #(�size/�2)
�]
�=""
� 00000000 0d 00 0a 0c f4 20 3e 53 68 65 65 74 0d 00 14 18 |..... >Sheet....|
00000010 eb 20 22 58 33 32 30 20 59 32 35 36 20 43 31 36 |. "X320 Y256 C16|
00000020 4d 22 3a 87 0d 00 1e 0c 73 69 7a 65 3d 31 32 38 |M":.....size=128|
00000030 0d 00 28 0b fb 20 31 32 38 3a db 0d 00 32 08 c8 |..(.. 128:...2..|
00000040 97 20 87 0d 00 3c 08 f2 61 73 73 0d 00 46 17 de |. ...<..ass..F..|
00000050 20 72 66 28 33 29 2c 67 66 28 33 29 2c 62 66 28 | rf(3),gf(3),bf(|
00000060 33 29 0d 00 50 0d e3 20 69 3d 30 20 b8 20 33 0d |3)..P.. i=0 . 3.|
00000070 00 5a 15 20 72 66 28 69 29 3d 28 b3 28 31 29 2a |.Z. rf(i)=(.(1)*|
00000080 35 2b 31 29 0d 00 64 15 20 67 66 28 69 29 3d 28 |5+1)..d. gf(i)=(|
00000090 b3 28 31 29 2a 35 2b 31 29 0d 00 6e 15 20 62 66 |.(1)*5+1)..n. bf|
000000a0 28 69 29 3d 28 b3 28 31 29 2a 35 2b 31 29 0d 00 |(i)=(.(1)*5+1)..|
000000b0 78 05 ed 0d 00 82 07 61 3d 30 0d 00 8c 05 f5 0d |x......a=0......|
000000c0 00 96 0b 20 63 3d 63 6f 6c 73 0d 00 a0 0e 20 e3 |... c=cols.... .|
000000d0 20 69 3d 30 20 b8 20 33 0d 00 aa 1c 20 20 63 3f | i=0 . 3.... c?|
000000e0 30 3d 31 32 37 2b 31 32 37 2a b5 28 61 2a 72 66 |0=127+127*.(a*rf|
000000f0 28 69 29 29 0d 00 b4 1c 20 20 63 3f 31 3d 31 32 |(i)).... c?1=12|
00000100 37 2b 31 32 37 2a b5 28 61 2a 67 66 28 69 29 29 |7+127*.(a*gf(i))|
00000110 0d 00 be 1c 20 20 63 3f 32 3d 31 32 37 2b 31 32 |.... c?2=127+12|
00000120 37 2a b5 28 61 2a 62 66 28 69 29 29 0d 00 c8 0a |7*.(a*bf(i))....|
00000130 20 20 63 2b 3d 34 0d 00 d2 06 20 ed 0d 00 dc 0c | c+=4.... .....|
00000140 20 c8 96 3a d6 20 67 6f 0d 00 e6 0c 20 61 2b 3d | ..:. go.... a+=|
00000150 30 2e 30 32 0d 00 f0 07 fd 20 30 0d 00 fa 04 0d |0.02..... 0.....|
00000160 01 04 04 0d 01 0e 11 21 72 67 62 54 3d 26 30 30 |.......!rgbT=&00|
00000170 30 30 30 30 0d 01 18 11 21 72 67 62 42 3d 26 46 |0000....!rgbB=&F|
00000180 46 30 30 30 30 0d 01 22 11 21 72 67 62 4c 3d 26 |F0000..".!rgbL=&|
00000190 30 30 30 30 30 30 0d 01 2c 11 21 72 67 62 52 3d |000000..,.!rgbR=|
000001a0 26 30 30 30 30 46 46 0d 01 36 08 d6 20 67 6f 0d |&0000FF..6.. go.|
000001b0 01 40 05 e0 0d 01 4a 05 3a 0d 01 54 0a dd 20 f2 |.@....J.:..T.. .|
000001c0 61 73 73 0d 01 5e 0f de 20 63 6f 64 65 20 34 30 |ass..^.. code 40|
000001d0 30 30 0d 01 68 09 73 70 3d 31 33 0d 01 72 09 6c |00..h.sp=13..r.l|
000001e0 72 3d 31 34 0d 01 7c 09 70 63 3d 31 35 0d 01 86 |r=14..|.pc=15...|
000001f0 1c e3 20 70 61 73 73 3d 30 20 b8 20 32 20 88 20 |.. pass=0 . 2 . |
00000200 32 3a 50 25 3d 63 6f 64 65 0d 01 90 0d 5b 4f 50 |2:P%=code....[OP|
00000210 54 20 70 61 73 73 0d 01 9a 07 2e 67 6f 0d 01 a4 |T pass.....go...|
00000220 16 20 20 20 53 54 4d 46 44 20 73 70 20 21 2c 7b |. STMFD sp !,{|
00000230 6c 72 7d 0d 01 ae 13 20 20 20 53 54 52 20 20 20 |lr}.... STR |
00000240 73 70 2c 20 53 50 0d 01 b8 04 0d 01 c2 14 20 20 |sp, SP........ |
00000250 20 4c 44 52 20 20 20 72 31 32 2c 73 63 72 0d 01 | LDR r12,scr..|
00000260 cc 17 20 20 20 4d 4f 56 20 20 20 72 38 2c 23 73 |.. MOV r8,#s|
00000270 69 7a 65 2d 31 0d 01 d6 04 0d 01 e0 08 2e 72 6f |ize-1.........ro|
00000280 77 0d 01 ea 04 0d 01 f4 16 20 20 20 4c 44 52 42 |w........ LDRB|
00000290 20 20 72 30 2c 72 67 62 54 2b 30 0d 01 fe 16 20 | r0,rgbT+0.... |
000002a0 20 20 4c 44 52 42 20 20 72 31 2c 72 67 62 42 2b | LDRB r1,rgbB+|
000002b0 30 0d 02 08 14 20 20 20 a4 64 69 76 28 30 2c 31 |0.... .div(0,1|
000002c0 2c 38 2c 32 29 0d 02 12 16 20 20 20 4c 44 52 42 |,8,2).... LDRB|
000002d0 20 20 72 30 2c 72 67 62 54 2b 31 0d 02 1c 16 20 | r0,rgbT+1.... |
000002e0 20 20 4c 44 52 42 20 20 72 31 2c 72 67 62 42 2b | LDRB r1,rgbB+|
000002f0 31 0d 02 26 14 20 20 20 a4 64 69 76 28 30 2c 31 |1..&. .div(0,1|
00000300 2c 38 2c 33 29 0d 02 30 16 20 20 20 4c 44 52 42 |,8,3)..0. LDRB|
00000310 20 20 72 30 2c 72 67 62 54 2b 32 0d 02 3a 16 20 | r0,rgbT+2..:. |
00000320 20 20 4c 44 52 42 20 20 72 31 2c 72 67 62 42 2b | LDRB r1,rgbB+|
00000330 32 0d 02 44 14 20 20 20 a4 64 69 76 28 30 2c 31 |2..D. .div(0,1|
00000340 2c 38 2c 34 29 0d 02 4e 04 0d 02 58 14 20 20 20 |,8,4)..N...X. |
00000350 4d 4f 56 20 20 20 72 31 31 2c 72 31 32 0d 02 62 |MOV r11,r12..b|
00000360 17 20 20 20 4d 4f 56 20 20 20 72 39 2c 23 73 69 |. MOV r9,#si|
00000370 7a 65 2d 31 0d 02 6c 04 0d 02 76 16 20 20 20 4c |ze-1..l...v. L|
00000380 44 52 42 20 20 72 30 2c 72 67 62 4c 2b 30 0d 02 |DRB r0,rgbL+0..|
00000390 80 16 20 20 20 4c 44 52 42 20 20 72 31 2c 72 67 |.. LDRB r1,rg|
000003a0 62 52 2b 30 0d 02 8a 04 0d 02 94 16 20 20 20 4c |bR+0........ L|
000003b0 44 52 42 20 20 72 35 2c 72 67 62 4c 2b 31 0d 02 |DRB r5,rgbL+1..|
000003c0 9e 16 20 20 20 4c 44 52 42 20 20 72 36 2c 72 67 |.. LDRB r6,rg|
000003d0 62 52 2b 31 0d 02 a8 04 0d 02 b2 16 20 20 20 4c |bR+1........ L|
000003e0 44 52 42 20 20 72 37 2c 72 67 62 4c 2b 32 0d 02 |DRB r7,rgbL+2..|
000003f0 bc 17 20 20 20 4c 44 52 42 20 20 72 31 30 2c 72 |.. LDRB r10,r|
00000400 67 62 52 2b 32 0d 02 c6 08 2e 63 6f 6c 0d 02 d0 |gbR+2.....col...|
00000410 04 0d 02 da 15 20 20 20 a4 64 69 76 28 30 2c 31 |..... .div(0,1|
00000420 2c 39 2c 6c 72 29 0d 02 e4 04 0d 02 ee 15 20 20 |,9,lr)........ |
00000430 20 41 44 44 20 20 20 6c 72 2c 72 32 2c 6c 72 0d | ADD lr,r2,lr.|
00000440 02 f8 1a 20 20 20 4d 4f 56 20 20 20 72 31 33 2c |... MOV r13,|
00000450 6c 72 2c 4c 53 52 20 23 31 0d 03 02 04 0d 03 0c |lr,LSR #1.......|
00000460 15 20 20 20 a4 64 69 76 28 35 2c 36 2c 39 2c 6c |. .div(5,6,9,l|
00000470 72 29 0d 03 16 04 0d 03 20 15 20 20 20 41 44 44 |r)...... . ADD|
00000480 20 20 20 6c 72 2c 72 33 2c 6c 72 0d 03 2a 19 20 | lr,r3,lr..*. |
00000490 20 20 4d 4f 56 20 20 20 6c 72 2c 6c 72 2c 4c 53 | MOV lr,lr,LS|
000004a0 52 20 23 31 0d 03 34 1d 20 20 20 84 52 20 20 20 |R #1..4. .R |
000004b0 72 31 33 2c 72 31 33 2c 6c 72 2c 4c 53 4c 20 23 |r13,r13,lr,LSL #|
000004c0 38 0d 03 3e 04 0d 03 48 16 20 20 20 a4 64 69 76 |8..>...H. .div|
000004d0 28 37 2c 31 30 2c 39 2c 6c 72 29 0d 03 52 04 0d |(7,10,9,lr)..R..|
000004e0 03 5c 15 20 20 20 41 44 44 20 20 20 6c 72 2c 72 |.\. ADD lr,r|
000004f0 34 2c 6c 72 0d 03 66 19 20 20 20 4d 4f 56 20 20 |4,lr..f. MOV |
00000500 20 6c 72 2c 6c 72 2c 4c 53 52 20 23 31 0d 03 70 | lr,lr,LSR #1..p|
00000510 1e 20 20 20 84 52 20 20 20 72 31 33 2c 72 31 33 |. .R r13,r13|
00000520 2c 6c 72 2c 4c 53 4c 20 23 31 36 0d 03 7a 04 0d |,lr,LSL #16..z..|
00000530 03 84 19 20 20 20 53 54 52 20 20 20 72 31 33 2c |... STR r13,|
00000540 5b 72 31 31 5d 2c 23 34 0d 03 8e 04 0d 03 98 15 |[r11],#4........|
00000550 20 20 20 53 55 42 53 20 20 72 39 2c 72 39 2c 23 | SUBS r9,r9,#|
00000560 31 0d 03 a2 10 20 20 20 42 50 4c 20 20 20 63 6f |1.... BPL co|
00000570 6c 0d 03 ac 04 0d 03 b6 1b 20 20 20 41 44 44 20 |l........ ADD |
00000580 20 20 72 31 32 2c 72 31 32 2c 23 33 32 30 2a 34 | r12,r12,#320*4|
00000590 0d 03 c0 04 0d 03 ca 15 20 20 20 53 55 42 53 20 |........ SUBS |
000005a0 20 72 38 2c 72 38 2c 23 31 0d 03 d4 10 20 20 20 | r8,r8,#1.... |
000005b0 42 50 4c 20 20 20 72 6f 77 0d 03 de 04 0d 03 e8 |BPL row.......|
000005c0 12 20 20 20 4c 44 52 20 20 20 73 70 2c 53 50 0d |. LDR sp,SP.|
000005d0 03 f2 16 20 20 20 4c 44 4d 46 44 20 73 70 20 21 |... LDMFD sp !|
000005e0 2c 7b 70 63 7d 0d 03 fc 04 0d 04 06 04 0d 04 10 |,{pc}...........|
000005f0 04 0d 04 1a 10 2e 53 50 20 20 20 45 51 55 44 20 |......SP EQUD |
00000600 30 0d 04 24 04 0d 04 2e 04 0d 04 38 12 2e 73 63 |0..$.......8..sc|
00000610 72 20 20 45 51 55 44 20 31 34 38 0d 04 42 11 20 |r EQUD 148..B. |
00000620 20 20 20 20 20 45 51 55 44 20 2d 31 0d 04 4c 09 | EQUD -1..L.|
00000630 2e 63 6f 6c 73 0d 04 56 10 2e 72 67 62 54 20 45 |.cols..V..rgbT E|
00000640 51 55 44 20 30 0d 04 60 10 2e 72 67 62 42 20 45 |QUD 0..`..rgbB E|
00000650 51 55 44 20 30 0d 04 6a 10 2e 72 67 62 4c 20 45 |QUD 0..j..rgbL E|
00000660 51 55 44 20 30 0d 04 74 10 2e 72 67 62 52 20 45 |QUD 0..t..rgbR E|
00000670 51 55 44 20 30 0d 04 7e 05 5d 0d 04 88 05 ed 0d |QUD 0..~.]......|
00000680 04 92 24 c8 99 20 22 4f 53 5f 52 65 61 64 56 64 |..$.. "OS_ReadVd|
00000690 75 56 61 72 69 61 62 6c 65 73 22 2c 73 63 72 2c |uVariables",scr,|
000006a0 73 63 72 0d 04 9c 33 21 73 63 72 3d 21 73 63 72 |scr...3!scr=!scr|
000006b0 2b 28 28 32 35 36 2d 73 69 7a 65 29 2f 32 29 2a |+((256-size)/2)*|
000006c0 33 32 30 2a 34 2b 28 28 33 32 30 2d 73 69 7a 65 |320*4+((320-size|
000006d0 29 2f 32 29 2a 34 0d 04 a6 05 e1 0d 04 b0 05 3a |)/2)*4.........:|
000006e0 0d 04 ba 13 dd 20 a4 64 69 76 28 61 2c 62 2c 64 |..... .div(a,b,d|
000006f0 2c 72 29 0d 04 c4 0d 5b 4f 50 54 20 70 61 73 73 |,r)....[OPT pass|
00000700 0d 04 ce 12 20 20 20 53 55 42 20 20 20 72 2c 61 |.... SUB r,a|
00000710 2c 62 0d 04 d8 12 20 20 20 4d 55 4c 20 20 20 72 |,b.... MUL r|
00000720 2c 64 2c 72 0d 04 e2 22 20 20 20 41 44 44 20 20 |,d,r..." ADD |
00000730 20 72 2c 62 2c 72 2c 41 53 52 20 23 28 aa 73 69 | r,b,r,ASR #(.si|
00000740 7a 65 2f aa 32 29 0d 04 ec 05 5d 0d 04 f6 07 3d |ze/.2)....]....=|
00000750 22 22 0d ff |""..|
00000754 
.