Home » Archimedes archive » Archimedes World » archimedes_world_volume_15_issue_13_scp.adf » Novelty » !Christmas/!RunImage

!Christmas/!RunImage

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 » Archimedes World » archimedes_world_volume_15_issue_13_scp.adf » Novelty
Filename: !Christmas/!RunImage
Read OK:
File size: 067B bytes
Load address: 0000
Exec address: 0000
File contents
   10REM > !RunImage
   20REM by David Horman
   30REM LEN 1994
   40:
   50MODE13 : OFF
   60PROCinit
   70PROCassemble
   80PROCchristmas
   90:
  100DEFPROCinit
  110DIM sine 360*8
  120DIM christmas 50240*2
  130OSCLI "load <Christmas$Dir>.christmas "+STR$~christmas
  140OSCLI "load <Christmas$Dir>.christmas "+STR$~(christmas+50240)
  150OSCLI "load <Christmas$Dir>.sinetable "+STR$~sine
  160ENDPROC
  170:
  180DEFPROCassemble
  190DIM code 1024
  200FOR pass%=0 TO 2 STEP 2
  210P%=code
  220[OPT pass%
  230.screen EQUD 148
  240EQUD -1
  250.spriteptr EQUD christmas
  260.sinetable EQUD sine
  270.plotter
  280; R4 - offset (0 - 359)
  290LDR R0,screen
  300LDR R1,spriteptr
  310LDR R2,sinetable
  320MOV R3,#80
  330:
  340.loop
  350LDR R0,screen
  360ADD R0,R0,R3,LSL#2
  370SUB R0,R0,#4
  380LDR R1,spriteptr
  390ADD R1,R1,R3,LSL#2
  400SUB R1,R1,#4
  410ADD R1,R1,R3,LSL#8 : ADD R1,R1,R3,LSL#6
  420MOV R7,R3,LSR#1 : ADD R1,R1,R7,LSL#8 : ADD R1,R1,R7,LSL#6
  430LDR R2,sinetable
  440ADD R2,R2,R3,LSL#2 : ADD R2,R2,R3,LSL#1
  450ADD R2,R2,R4
  460LDR R5,sinetable
  470ADD R5,R5,#1440
  480CMP R2,R5
  490SUBGE R2,R2,#1440
  500MOV R12,#59
  510MOV R10,#0
  520:
  530.loop2
  540LDMIA R1,{R5}
  550LDR R7,sinetable
  560ADD R7,R7,#1440
  570CMP R2,R7
  580SUBGE R2,R2,#1440
  590LDMIA R2,{R11}
  600ADD R6,R0,R11,LSL#8 : ADD R6,R6,R11,LSL#6
  610LDMIA R6,{R7} : ORR R5,R5,R7 : STMIA R6,{R5}
  620ADD R2,R2,#4
  630ADD R1,R1,#320
  640SUBS R12,R12,#1
  650BNE loop2
  660:
  670SUBS R3,R3,#1
  680BNE loop
  690MOV PC,R14
  700] : NEXT
  710SYS "OS_ReadVduVariables",screen,screen
  720screen!4=!screen+&14000
  730ENDPROC
  740:
  750DEFPROCchristmas
  760s1%=2 : s2%=1
  770REPEAT
  780FOR E%=358*4 TO 0 STEP -8
  790SYS "OS_Byte",112,s1%
  800SYS "OS_Byte",113,s2%
  810SWAP !screen,screen!4
  820CALL plotter
  830SWAP s1%,s2%
  840SYS "OS_Byte",112,s1%
  850SYS "OS_Byte",113,s2%
  860WAIT : CLS
  870NEXT
  880UNTILFALSE
  890ENDPROC
  900:

� > !RunImage
� by David Horman
� � 1994
(:
2�13 : �
<	�init
F
�assemble
P�christmas
Z:
d
��init
n� sine 360*8
x� christmas 50240*2
�3� "load <Christmas$Dir>.christmas "+�~christmas
�;� "load <Christmas$Dir>.christmas "+�~(christmas+50240)
�.� "load <Christmas$Dir>.sinetable "+�~sine
��
�:
���assemble
�� code 1024
�� pass%=0 � 2 � 2
�P%=code
�[OPT pass%
�.screen EQUD 148
�EQUD -1
�.spriteptr EQUD christmas
.sinetable EQUD sine
.plotter
; R4 - offset (0 - 359)
"LDR R0,screen
,LDR R1,spriteptr
6LDR R2,sinetable
@MOV R3,#80
J:
T	.loop
^LDR R0,screen
hADD R0,R0,R3,LSL#2
rSUB R0,R0,#4
|LDR R1,spriteptr
�ADD R1,R1,R3,LSL#2
�SUB R1,R1,#4
�+ADD R1,R1,R3,LSL#8 : ADD R1,R1,R3,LSL#6
�=MOV R7,R3,LSR#1 : ADD R1,R1,R7,LSL#8 : ADD R1,R1,R7,LSL#6
�LDR R2,sinetable
�+ADD R2,R2,R3,LSL#2 : ADD R2,R2,R3,LSL#1
�ADD R2,R2,R4
�LDR R5,sinetable
�ADD R5,R5,#1440
�
CMP R2,R5
�SUBGE R2,R2,#1440
�MOV R12,#59
�MOV R10,#0
:

.loop2
LDMIA R1,{R5}
&LDR R7,sinetable
0ADD R7,R7,#1440
:
CMP R2,R7
DSUBGE R2,R2,#1440
NLDMIA R2,{R11}
X-ADD R6,R0,R11,LSL#8 : ADD R6,R6,R11,LSL#6
b/LDMIA R6,{R7} : �R R5,R5,R7 : STMIA R6,{R5}
lADD R2,R2,#4
vADD R1,R1,#320
�SUBS R12,R12,#1
�
BNE loop2
�:
�SUBS R3,R3,#1
�BNE loop
�MOV PC,R14
�	] : �
�*ș "OS_ReadVduVariables",screen,screen
�screen!4=!screen+&14000
��
�:
���christmas
�s1%=2 : s2%=1
�
� E%=358*4 � 0 � -8
ș "OS_Byte",112,s1%
 ș "OS_Byte",113,s2%
*Ȕ !screen,screen!4
4
� plotter
>Ȕ s1%,s2%
Hș "OS_Byte",112,s1%
Rș "OS_Byte",113,s2%
\
Ȗ : �
f�
p��
z�
�:
�
00000000  0d 00 0a 11 f4 20 3e 20  21 52 75 6e 49 6d 61 67  |..... > !RunImag|
00000010  65 0d 00 14 15 f4 20 62  79 20 44 61 76 69 64 20  |e..... by David |
00000020  48 6f 72 6d 61 6e 0d 00  1e 0c f4 20 a9 20 31 39  |Horman..... . 19|
00000030  39 34 0d 00 28 05 3a 0d  00 32 0b eb 31 33 20 3a  |94..(.:..2..13 :|
00000040  20 87 0d 00 3c 09 f2 69  6e 69 74 0d 00 46 0d f2  | ...<..init..F..|
00000050  61 73 73 65 6d 62 6c 65  0d 00 50 0e f2 63 68 72  |assemble..P..chr|
00000060  69 73 74 6d 61 73 0d 00  5a 05 3a 0d 00 64 0a dd  |istmas..Z.:..d..|
00000070  f2 69 6e 69 74 0d 00 6e  10 de 20 73 69 6e 65 20  |.init..n.. sine |
00000080  33 36 30 2a 38 0d 00 78  17 de 20 63 68 72 69 73  |360*8..x.. chris|
00000090  74 6d 61 73 20 35 30 32  34 30 2a 32 0d 00 82 33  |tmas 50240*2...3|
000000a0  ff 20 22 6c 6f 61 64 20  3c 43 68 72 69 73 74 6d  |. "load <Christm|
000000b0  61 73 24 44 69 72 3e 2e  63 68 72 69 73 74 6d 61  |as$Dir>.christma|
000000c0  73 20 22 2b c3 7e 63 68  72 69 73 74 6d 61 73 0d  |s "+.~christmas.|
000000d0  00 8c 3b ff 20 22 6c 6f  61 64 20 3c 43 68 72 69  |..;. "load <Chri|
000000e0  73 74 6d 61 73 24 44 69  72 3e 2e 63 68 72 69 73  |stmas$Dir>.chris|
000000f0  74 6d 61 73 20 22 2b c3  7e 28 63 68 72 69 73 74  |tmas "+.~(christ|
00000100  6d 61 73 2b 35 30 32 34  30 29 0d 00 96 2e ff 20  |mas+50240)..... |
00000110  22 6c 6f 61 64 20 3c 43  68 72 69 73 74 6d 61 73  |"load <Christmas|
00000120  24 44 69 72 3e 2e 73 69  6e 65 74 61 62 6c 65 20  |$Dir>.sinetable |
00000130  22 2b c3 7e 73 69 6e 65  0d 00 a0 05 e1 0d 00 aa  |"+.~sine........|
00000140  05 3a 0d 00 b4 0e dd f2  61 73 73 65 6d 62 6c 65  |.:......assemble|
00000150  0d 00 be 0f de 20 63 6f  64 65 20 31 30 32 34 0d  |..... code 1024.|
00000160  00 c8 15 e3 20 70 61 73  73 25 3d 30 20 b8 20 32  |.... pass%=0 . 2|
00000170  20 88 20 32 0d 00 d2 0b  50 25 3d 63 6f 64 65 0d  | . 2....P%=code.|
00000180  00 dc 0e 5b 4f 50 54 20  70 61 73 73 25 0d 00 e6  |...[OPT pass%...|
00000190  14 2e 73 63 72 65 65 6e  20 45 51 55 44 20 31 34  |..screen EQUD 14|
000001a0  38 0d 00 f0 0b 45 51 55  44 20 2d 31 0d 00 fa 1d  |8....EQUD -1....|
000001b0  2e 73 70 72 69 74 65 70  74 72 20 45 51 55 44 20  |.spriteptr EQUD |
000001c0  63 68 72 69 73 74 6d 61  73 0d 01 04 18 2e 73 69  |christmas.....si|
000001d0  6e 65 74 61 62 6c 65 20  45 51 55 44 20 73 69 6e  |netable EQUD sin|
000001e0  65 0d 01 0e 0c 2e 70 6c  6f 74 74 65 72 0d 01 18  |e.....plotter...|
000001f0  1b 3b 20 52 34 20 2d 20  6f 66 66 73 65 74 20 28  |.; R4 - offset (|
00000200  30 20 2d 20 33 35 39 29  0d 01 22 11 4c 44 52 20  |0 - 359)..".LDR |
00000210  52 30 2c 73 63 72 65 65  6e 0d 01 2c 14 4c 44 52  |R0,screen..,.LDR|
00000220  20 52 31 2c 73 70 72 69  74 65 70 74 72 0d 01 36  | R1,spriteptr..6|
00000230  14 4c 44 52 20 52 32 2c  73 69 6e 65 74 61 62 6c  |.LDR R2,sinetabl|
00000240  65 0d 01 40 0e 4d 4f 56  20 52 33 2c 23 38 30 0d  |e..@.MOV R3,#80.|
00000250  01 4a 05 3a 0d 01 54 09  2e 6c 6f 6f 70 0d 01 5e  |.J.:..T..loop..^|
00000260  11 4c 44 52 20 52 30 2c  73 63 72 65 65 6e 0d 01  |.LDR R0,screen..|
00000270  68 16 41 44 44 20 52 30  2c 52 30 2c 52 33 2c 4c  |h.ADD R0,R0,R3,L|
00000280  53 4c 23 32 0d 01 72 10  53 55 42 20 52 30 2c 52  |SL#2..r.SUB R0,R|
00000290  30 2c 23 34 0d 01 7c 14  4c 44 52 20 52 31 2c 73  |0,#4..|.LDR R1,s|
000002a0  70 72 69 74 65 70 74 72  0d 01 86 16 41 44 44 20  |priteptr....ADD |
000002b0  52 31 2c 52 31 2c 52 33  2c 4c 53 4c 23 32 0d 01  |R1,R1,R3,LSL#2..|
000002c0  90 10 53 55 42 20 52 31  2c 52 31 2c 23 34 0d 01  |..SUB R1,R1,#4..|
000002d0  9a 2b 41 44 44 20 52 31  2c 52 31 2c 52 33 2c 4c  |.+ADD R1,R1,R3,L|
000002e0  53 4c 23 38 20 3a 20 41  44 44 20 52 31 2c 52 31  |SL#8 : ADD R1,R1|
000002f0  2c 52 33 2c 4c 53 4c 23  36 0d 01 a4 3d 4d 4f 56  |,R3,LSL#6...=MOV|
00000300  20 52 37 2c 52 33 2c 4c  53 52 23 31 20 3a 20 41  | R7,R3,LSR#1 : A|
00000310  44 44 20 52 31 2c 52 31  2c 52 37 2c 4c 53 4c 23  |DD R1,R1,R7,LSL#|
00000320  38 20 3a 20 41 44 44 20  52 31 2c 52 31 2c 52 37  |8 : ADD R1,R1,R7|
00000330  2c 4c 53 4c 23 36 0d 01  ae 14 4c 44 52 20 52 32  |,LSL#6....LDR R2|
00000340  2c 73 69 6e 65 74 61 62  6c 65 0d 01 b8 2b 41 44  |,sinetable...+AD|
00000350  44 20 52 32 2c 52 32 2c  52 33 2c 4c 53 4c 23 32  |D R2,R2,R3,LSL#2|
00000360  20 3a 20 41 44 44 20 52  32 2c 52 32 2c 52 33 2c  | : ADD R2,R2,R3,|
00000370  4c 53 4c 23 31 0d 01 c2  10 41 44 44 20 52 32 2c  |LSL#1....ADD R2,|
00000380  52 32 2c 52 34 0d 01 cc  14 4c 44 52 20 52 35 2c  |R2,R4....LDR R5,|
00000390  73 69 6e 65 74 61 62 6c  65 0d 01 d6 13 41 44 44  |sinetable....ADD|
000003a0  20 52 35 2c 52 35 2c 23  31 34 34 30 0d 01 e0 0d  | R5,R5,#1440....|
000003b0  43 4d 50 20 52 32 2c 52  35 0d 01 ea 15 53 55 42  |CMP R2,R5....SUB|
000003c0  47 45 20 52 32 2c 52 32  2c 23 31 34 34 30 0d 01  |GE R2,R2,#1440..|
000003d0  f4 0f 4d 4f 56 20 52 31  32 2c 23 35 39 0d 01 fe  |..MOV R12,#59...|
000003e0  0e 4d 4f 56 20 52 31 30  2c 23 30 0d 02 08 05 3a  |.MOV R10,#0....:|
000003f0  0d 02 12 0a 2e 6c 6f 6f  70 32 0d 02 1c 11 4c 44  |.....loop2....LD|
00000400  4d 49 41 20 52 31 2c 7b  52 35 7d 0d 02 26 14 4c  |MIA R1,{R5}..&.L|
00000410  44 52 20 52 37 2c 73 69  6e 65 74 61 62 6c 65 0d  |DR R7,sinetable.|
00000420  02 30 13 41 44 44 20 52  37 2c 52 37 2c 23 31 34  |.0.ADD R7,R7,#14|
00000430  34 30 0d 02 3a 0d 43 4d  50 20 52 32 2c 52 37 0d  |40..:.CMP R2,R7.|
00000440  02 44 15 53 55 42 47 45  20 52 32 2c 52 32 2c 23  |.D.SUBGE R2,R2,#|
00000450  31 34 34 30 0d 02 4e 12  4c 44 4d 49 41 20 52 32  |1440..N.LDMIA R2|
00000460  2c 7b 52 31 31 7d 0d 02  58 2d 41 44 44 20 52 36  |,{R11}..X-ADD R6|
00000470  2c 52 30 2c 52 31 31 2c  4c 53 4c 23 38 20 3a 20  |,R0,R11,LSL#8 : |
00000480  41 44 44 20 52 36 2c 52  36 2c 52 31 31 2c 4c 53  |ADD R6,R6,R11,LS|
00000490  4c 23 36 0d 02 62 2f 4c  44 4d 49 41 20 52 36 2c  |L#6..b/LDMIA R6,|
000004a0  7b 52 37 7d 20 3a 20 84  52 20 52 35 2c 52 35 2c  |{R7} : .R R5,R5,|
000004b0  52 37 20 3a 20 53 54 4d  49 41 20 52 36 2c 7b 52  |R7 : STMIA R6,{R|
000004c0  35 7d 0d 02 6c 10 41 44  44 20 52 32 2c 52 32 2c  |5}..l.ADD R2,R2,|
000004d0  23 34 0d 02 76 12 41 44  44 20 52 31 2c 52 31 2c  |#4..v.ADD R1,R1,|
000004e0  23 33 32 30 0d 02 80 13  53 55 42 53 20 52 31 32  |#320....SUBS R12|
000004f0  2c 52 31 32 2c 23 31 0d  02 8a 0d 42 4e 45 20 6c  |,R12,#1....BNE l|
00000500  6f 6f 70 32 0d 02 94 05  3a 0d 02 9e 11 53 55 42  |oop2....:....SUB|
00000510  53 20 52 33 2c 52 33 2c  23 31 0d 02 a8 0c 42 4e  |S R3,R3,#1....BN|
00000520  45 20 6c 6f 6f 70 0d 02  b2 0e 4d 4f 56 20 50 43  |E loop....MOV PC|
00000530  2c 52 31 34 0d 02 bc 09  5d 20 3a 20 ed 0d 02 c6  |,R14....] : ....|
00000540  2a c8 99 20 22 4f 53 5f  52 65 61 64 56 64 75 56  |*.. "OS_ReadVduV|
00000550  61 72 69 61 62 6c 65 73  22 2c 73 63 72 65 65 6e  |ariables",screen|
00000560  2c 73 63 72 65 65 6e 0d  02 d0 1b 73 63 72 65 65  |,screen....scree|
00000570  6e 21 34 3d 21 73 63 72  65 65 6e 2b 26 31 34 30  |n!4=!screen+&140|
00000580  30 30 0d 02 da 05 e1 0d  02 e4 05 3a 0d 02 ee 0f  |00.........:....|
00000590  dd f2 63 68 72 69 73 74  6d 61 73 0d 02 f8 11 73  |..christmas....s|
000005a0  31 25 3d 32 20 3a 20 73  32 25 3d 31 0d 03 02 05  |1%=2 : s2%=1....|
000005b0  f5 0d 03 0c 17 e3 20 45  25 3d 33 35 38 2a 34 20  |...... E%=358*4 |
000005c0  b8 20 30 20 88 20 2d 38  0d 03 16 18 c8 99 20 22  |. 0 . -8...... "|
000005d0  4f 53 5f 42 79 74 65 22  2c 31 31 32 2c 73 31 25  |OS_Byte",112,s1%|
000005e0  0d 03 20 18 c8 99 20 22  4f 53 5f 42 79 74 65 22  |.. ... "OS_Byte"|
000005f0  2c 31 31 33 2c 73 32 25  0d 03 2a 17 c8 94 20 21  |,113,s2%..*... !|
00000600  73 63 72 65 65 6e 2c 73  63 72 65 65 6e 21 34 0d  |screen,screen!4.|
00000610  03 34 0d d6 20 70 6c 6f  74 74 65 72 0d 03 3e 0e  |.4.. plotter..>.|
00000620  c8 94 20 73 31 25 2c 73  32 25 0d 03 48 18 c8 99  |.. s1%,s2%..H...|
00000630  20 22 4f 53 5f 42 79 74  65 22 2c 31 31 32 2c 73  | "OS_Byte",112,s|
00000640  31 25 0d 03 52 18 c8 99  20 22 4f 53 5f 42 79 74  |1%..R... "OS_Byt|
00000650  65 22 2c 31 31 33 2c 73  32 25 0d 03 5c 0a c8 96  |e",113,s2%..\...|
00000660  20 3a 20 db 0d 03 66 05  ed 0d 03 70 06 fd a3 0d  | : ...f....p....|
00000670  03 7a 05 e1 0d 03 84 05  3a 0d ff                 |.z......:..|
0000067b