Home » Personal collection » Acorn tapes » Electron_User » Electron_User_tape10a_acorn_eu_1990_april.wav » ULA3

ULA3

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 » Personal collection » Acorn tapes » Electron_User » Electron_User_tape10a_acorn_eu_1990_april.wav
Filename: ULA3
Read OK:
File size: 02F5 bytes
Load address: 2000
Exec address: 1900
Duplicates

There are 3 duplicate copies of this file in the archive:

File contents
   10REM Circles
   20REM By R.Henderson
   30REM (c) Electron User
   40SOUND 1,0,0,1
   50P%=&900
   60[OPT 0
   70LDA #0
   80STA &70
   90STA &72
  100LDA &74
  110STA &71
  120LDA &75
  130STA &73
  140LDY #0
  150.copy
  160LDA (&70),Y
  170STA (&72),Y
  180INY
  190BNE copy
  200INC &71
  210INC &73
  220LDA &71
  230CMP&76
  240BNE copy
  250RTS
  260.intoff
  270SEI
  280RTS
  290]
  300CALL intoff
  310MODE 0
  320MODE 5
  330HIMEM=&3000
  340VDU 23,1,0;0;0;0;
  350?&34E=&30
  360?&351=&30
  370REPEAT
  380?&FE02=0
  390?&FE03=&2C
  400x%=RND(1278)
  410y%=RND(1024)
  420r%=RND(200)+60
  430GCOL 3,RND(3)
  440PROCc(x%,y%,r%)
  450?&FE03=&18
  460?&74=&30
  470?&75=&58
  480?&76=&80
  490CALL &900
  500IF RND(40)=4 CLS:UNTIL 0
  510UNTIL 0
  520 
  530DEF PROCc(X%,Y%,R%)
  540FOR I%=Y%+R% TO Y%-R% STEP -8
  550J%=SQR(ABS(R%*R%-(I%-Y%)*(I%-Y%)))
  560MOVE X%-J%,I%
  570DRAW X%+J%,I%
  580MOVE X%-J%,(I%+4)
  590DRAW X%+J%,(I%+4)
  600NEXT
  610ENDPROC


� Circles
� By R.Henderson
� (c) Electron User
(
� 1,0,0,1
2P%=&900
<
[OPT 0
F
LDA #0
PSTA &70
ZSTA &72
dLDA &74
nSTA &71
xLDA &75
�STA &73
�
LDY #0
�	.copy
�LDA (&70),Y
�STA (&72),Y
�INY
�BNE copy
�INC &71
�INC &73
�LDA &71
�
CMP&76
�BNE copy
�RTS
.intoff
SEI
RTS
"]
,� intoff
6� 0
@� 5
J�=&3000
T� 23,1,0;0;0;0;
^
?&34E=&30
h
?&351=&30
r�
|?&FE02=0
�?&FE03=&2C
�x%=�(1278)
�y%=�(1024)
�r%=�(200)+60
�� 3,�(3)
��c(x%,y%,r%)
�?&FE03=&18
�?&74=&30
�?&75=&58
�?&76=&80
�
� &900
�� �(40)=4 �:� 0
�� 0
 
� �c(X%,Y%,R%)
� I%=Y%+R% � Y%-R% � -8
&"J%=�(�(R%*R%-(I%-Y%)*(I%-Y%)))
0� X%-J%,I%
:� X%+J%,I%
D� X%-J%,(I%+4)
N� X%+J%,(I%+4)
X�
b�
�
00000000  0d 00 0a 0d f4 20 43 69  72 63 6c 65 73 0d 00 14  |..... Circles...|
00000010  14 f4 20 42 79 20 52 2e  48 65 6e 64 65 72 73 6f  |.. By R.Henderso|
00000020  6e 0d 00 1e 17 f4 20 28  63 29 20 45 6c 65 63 74  |n..... (c) Elect|
00000030  72 6f 6e 20 55 73 65 72  0d 00 28 0d d4 20 31 2c  |ron User..(.. 1,|
00000040  30 2c 30 2c 31 0d 00 32  0b 50 25 3d 26 39 30 30  |0,0,1..2.P%=&900|
00000050  0d 00 3c 0a 5b 4f 50 54  20 30 0d 00 46 0a 4c 44  |..<.[OPT 0..F.LD|
00000060  41 20 23 30 0d 00 50 0b  53 54 41 20 26 37 30 0d  |A #0..P.STA &70.|
00000070  00 5a 0b 53 54 41 20 26  37 32 0d 00 64 0b 4c 44  |.Z.STA &72..d.LD|
00000080  41 20 26 37 34 0d 00 6e  0b 53 54 41 20 26 37 31  |A &74..n.STA &71|
00000090  0d 00 78 0b 4c 44 41 20  26 37 35 0d 00 82 0b 53  |..x.LDA &75....S|
000000a0  54 41 20 26 37 33 0d 00  8c 0a 4c 44 59 20 23 30  |TA &73....LDY #0|
000000b0  0d 00 96 09 2e 63 6f 70  79 0d 00 a0 0f 4c 44 41  |.....copy....LDA|
000000c0  20 28 26 37 30 29 2c 59  0d 00 aa 0f 53 54 41 20  | (&70),Y....STA |
000000d0  28 26 37 32 29 2c 59 0d  00 b4 07 49 4e 59 0d 00  |(&72),Y....INY..|
000000e0  be 0c 42 4e 45 20 63 6f  70 79 0d 00 c8 0b 49 4e  |..BNE copy....IN|
000000f0  43 20 26 37 31 0d 00 d2  0b 49 4e 43 20 26 37 33  |C &71....INC &73|
00000100  0d 00 dc 0b 4c 44 41 20  26 37 31 0d 00 e6 0a 43  |....LDA &71....C|
00000110  4d 50 26 37 36 0d 00 f0  0c 42 4e 45 20 63 6f 70  |MP&76....BNE cop|
00000120  79 0d 00 fa 07 52 54 53  0d 01 04 0b 2e 69 6e 74  |y....RTS.....int|
00000130  6f 66 66 0d 01 0e 07 53  45 49 0d 01 18 07 52 54  |off....SEI....RT|
00000140  53 0d 01 22 05 5d 0d 01  2c 0c d6 20 69 6e 74 6f  |S..".]..,.. into|
00000150  66 66 0d 01 36 07 eb 20  30 0d 01 40 07 eb 20 35  |ff..6.. 0..@.. 5|
00000160  0d 01 4a 0b d3 3d 26 33  30 30 30 0d 01 54 13 ef  |..J..=&3000..T..|
00000170  20 32 33 2c 31 2c 30 3b  30 3b 30 3b 30 3b 0d 01  | 23,1,0;0;0;0;..|
00000180  5e 0d 3f 26 33 34 45 3d  26 33 30 0d 01 68 0d 3f  |^.?&34E=&30..h.?|
00000190  26 33 35 31 3d 26 33 30  0d 01 72 05 f5 0d 01 7c  |&351=&30..r....||
000001a0  0c 3f 26 46 45 30 32 3d  30 0d 01 86 0e 3f 26 46  |.?&FE02=0....?&F|
000001b0  45 30 33 3d 26 32 43 0d  01 90 0e 78 25 3d b3 28  |E03=&2C....x%=.(|
000001c0  31 32 37 38 29 0d 01 9a  0e 79 25 3d b3 28 31 30  |1278)....y%=.(10|
000001d0  32 34 29 0d 01 a4 10 72  25 3d b3 28 32 30 30 29  |24)....r%=.(200)|
000001e0  2b 36 30 0d 01 ae 0c e6  20 33 2c b3 28 33 29 0d  |+60..... 3,.(3).|
000001f0  01 b8 10 f2 63 28 78 25  2c 79 25 2c 72 25 29 0d  |....c(x%,y%,r%).|
00000200  01 c2 0e 3f 26 46 45 30  33 3d 26 31 38 0d 01 cc  |...?&FE03=&18...|
00000210  0c 3f 26 37 34 3d 26 33  30 0d 01 d6 0c 3f 26 37  |.?&74=&30....?&7|
00000220  35 3d 26 35 38 0d 01 e0  0c 3f 26 37 36 3d 26 38  |5=&58....?&76=&8|
00000230  30 0d 01 ea 0a d6 20 26  39 30 30 0d 01 f4 13 e7  |0..... &900.....|
00000240  20 b3 28 34 30 29 3d 34  20 db 3a fd 20 30 0d 01  | .(40)=4 .:. 0..|
00000250  fe 07 fd 20 30 0d 02 08  05 20 0d 02 12 12 dd 20  |... 0.... ..... |
00000260  f2 63 28 58 25 2c 59 25  2c 52 25 29 0d 02 1c 1b  |.c(X%,Y%,R%)....|
00000270  e3 20 49 25 3d 59 25 2b  52 25 20 b8 20 59 25 2d  |. I%=Y%+R% . Y%-|
00000280  52 25 20 88 20 2d 38 0d  02 26 22 4a 25 3d b6 28  |R% . -8..&"J%=.(|
00000290  94 28 52 25 2a 52 25 2d  28 49 25 2d 59 25 29 2a  |.(R%*R%-(I%-Y%)*|
000002a0  28 49 25 2d 59 25 29 29  29 0d 02 30 0e ec 20 58  |(I%-Y%)))..0.. X|
000002b0  25 2d 4a 25 2c 49 25 0d  02 3a 0e df 20 58 25 2b  |%-J%,I%..:.. X%+|
000002c0  4a 25 2c 49 25 0d 02 44  12 ec 20 58 25 2d 4a 25  |J%,I%..D.. X%-J%|
000002d0  2c 28 49 25 2b 34 29 0d  02 4e 12 df 20 58 25 2b  |,(I%+4)..N.. X%+|
000002e0  4a 25 2c 28 49 25 2b 34  29 0d 02 58 05 ed 0d 02  |J%,(I%+4)..X....|
000002f0  62 05 e1 0d ff                                    |b....|
000002f5
ULA3.m0
ULA3.m1
ULA3.m2
ULA3.m4
ULA3.m5