Home » Personal collection » Acorn ADFS disks » Electron » PRES_E00_backup.ADF » Welcome/Patterns

Welcome/Patterns

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 ADFS disks » Electron » PRES_E00_backup.ADF
Filename: Welcome/Patterns
Read OK:
File size: 080A bytes
Load address: FFFF0E00
Exec address: FFFF8023
File contents
   10*FX11,50
   20*FX12,8
   30*FX15,0
   40VDU6:*FX220,27
   50ONERRORGOTO90
   60DIMM 255,B 8:o=&FFF1
   70MODE4:PROCI:PROCS:REPEAT:S%=FNK:L%=FNK:MODE5:D%=RND(6):E%=D%MOD6+1:F%=E%MOD6+1:G%=F%MOD6+1:VDU19,0,D%;0;19,1,E%;0;19,2,F%;0;19,3,G%;0;5:Z%=5:C%=1:CLG:REPEATB%=RND(5)-1:UNTILB%<>2:FORY%=0TO1023STEP4*S%:C%=C%MOD7+1:GCOLB%,C%:MOVE0,0:PLOTZ%,1278,Y%:MOVE1278,0:PLOTZ%,0,Y%:NEXT:FORX%=0TO642STEP8*L%:MOVE0,0:PLOTZ%,(1278-X%),1020
   80MOVE1278,0:PLOTZ%,X%,1020:NEXT:UNTILFALSE
   90IFERR<>17REPORT:PRINT" at line ";ERL:GOTO130
  100REPEAT:MODE4:CLS:PROCC("Which do you want to do ?",10):PRINTTAB(10,VPOS+3)"";:PROCn("R"):PRINT"epeat this program":PRINTTAB(10,VPOS+1)"Go to ";:PROCn("N"):PRINT"ext program":PRINTTAB(10,VPOS+1)"Return to main ";:PROCn("M"):PRINT"enu":PRINTTAB(10,VPOS+1)"";:PROCn("E"):PRINT"xit from disc"
  110PRINTTAB(0,VPOS+3)"Choose from ";:PROCn("R"):PRINT"epeat, ";:PROCn("N"):PRINT"ext, ";:PROCn("M"):PRINT"enu or ";:PROCn("E"):PRINT"xit ";:A$=GET$:UNTIL(A$="R")OR(A$="N")OR(A$="M")OR(A$="E"):CLS:IFA$="R"THENGOTO70
  120IFA$="N"THENP%=9ELSEIFA$="M"THENP%=1ELSEP%=17
  130*FX4
  140VDU21:*FX220,0
  150*FX15,1
  160*FX201,1
  170CHAIN"BOOT":END
  180DEFPROCn(A$):COLOUR0:COLOUR135:PRINTA$;:COLOUR7:COLOUR128:ENDPROC
  190DEFPROCS:CLS:PROCO:CLS:PROCD("Patterns",1):PROCR:PRINT'"      This program generates patterns"'"   which  are  displayed  using high-":PRINT"   resolution graphics."'':PRINT"      The  program  produces   random"'"   patterns which need to be triggered"
  200PRINT"   by pressing any two of the number"'"   keys."'':PROCP:PROCR:PRINT'"      Each time a pattern finishes,"'"   press two  of the number keys in":PRINT"   sequence   to  produce   another"'"   pattern, or  press ESCAPE to  go":PRINT"   on to the next program.":PROCP:PROCR
  210PRINT"      Start the pattern generation"'"   now,  by  pressing  two  number":PRINT"   keys in sequence...":ENDPROC
  220DEFPROCP:PRINTTAB(3,29);"Press the SPACE BAR to continue":*FX15,1
  230REPEATUNTILGET$=" ":ENDPROC
  240DEFPROCRCLS:PRINTD$':ENDPROC
  250DEFPROCY:Y%=-1
  260X%=GET:X%=X%AND&DF:IFX%<>78ANDX%<>89THEN260
  270Y%=1:IFX%=78THENY%=0
  280VDUX%,8:ENDPROC
  290DEFPROCOVDU23,1,0;0;0;0;:ENDPROC
  300DEFPROCC(A$,Y%)PRINTTAB(19-LENA$/2,Y%)A$;:ENDPROC
  310DEFFNK:REPEATK=GET:IFK>=ASC"!"ANDK<=ASC")"K=KOR&10
  320UNTILK>=ASC"0"ANDK<=ASC"9":=(VALCHR$K+9)MOD10+1
  330DEFPROCI$M=STRING$(255,CHR$0):M?255=0:C=224:ENDPROC
  340DEFPROCD(A$,y%)B$="":C$="":FORH%=1TOLENA$:K%=FNC(ASCMID$(A$,H%,1)):B$=B$+CHR$K%:C$=C$+CHR$(K%+1):NEXT:K%=19-LENA$/2:D$=CHR$31+CHR$K%+CHR$y%+B$+CHR$31+CHR$K%+CHR$(y%+1)+C$:ENDPROC
  350DEFFNC(C%)IFM?C%THEN=M?C%ELSEIFC>=256STOPELSEM?C%=C:?B=C%:A%=10:X%=B:Y%=BDIV256:CALLo:FORJ%=0TO1:VDU23,C+J%:FORI%=2TO9:VDUB?(J%*4+I%DIV2):NEXT,:C=C+2:=M?C%

*FX11,50
*FX12,8
*FX15,0
(�6:*FX220,27
2��DZ@
<�M 255,B 8:o=&FFF1
F��4:�I:�S:�:S%=�K:L%=�K:�5:D%=�(6):E%=D%�6+1:F%=E%�6+1:G%=F%�6+1:�19,0,D%;0;19,1,E%;0;19,2,F%;0;19,3,G%;0;5:Z%=5:C%=1:�:�B%=�(5)-1:�B%<>2:�Y%=0�1023�4*S%:C%=C%�7+1:�B%,C%:�0,0:�Z%,1278,Y%:�1278,0:�Z%,0,Y%:�:�X%=0�642�8*L%:�0,0:�Z%,(1278-X%),1020
P�1278,0:�Z%,X%,1020:�:��
Z �<>17�:�" at line ";�:�tB@
d�:�4:�:�C("Which do you want to do ?",10):�10,�+3)"";:�n("R"):�"epeat this program":�10,�+1)"Go to ";:�n("N"):�"ext program":�10,�+1)"Return to main ";:�n("M"):�"enu":�10,�+1)"";:�n("E"):�"xit from disc"
n��0,�+3)"Choose from ";:�n("R"):�"epeat, ";:�n("N"):�"ext, ";:�n("M"):�"enu or ";:�n("E"):�"xit ";:A$=�:�(A$="R")�(A$="N")�(A$="M")�(A$="E"):�:�A$="R"��DF@
x#�A$="N"�P%=9��A$="M"�P%=1�P%=17
�*FX4
��21:*FX220,0
�*FX15,1
�*FX201,1
�
�"BOOT":�
�"��n(A$):�0:�135:�A$;:�7:�128:�
����S:�:�O:�:�D("Patterns",1):�R:�'"      This program generates patterns"'"   which  are  displayed  using high-":�"   resolution graphics."'':�"      The  program  produces   random"'"   patterns which need to be triggered"
��"   by pressing any two of the number"'"   keys."'':�P:�R:�'"      Each time a pattern finishes,"'"   press two  of the number keys in":�"   sequence   to  produce   another"'"   pattern, or  press ESCAPE to  go":�"   on to the next program.":�P:�R
�j�"      Start the pattern generation"'"   now,  by  pressing  two  number":�"   keys in sequence...":�
�9��P:�3,29);"Press the SPACE BAR to continue":*FX15,1
�
���=" ":�
���R�:�D$':�
�
��Y:Y%=-1
&X%=�:X%=X%�&DF:�X%<>78�X%<>89��TDA
Y%=1:�X%=78�Y%=0
�X%,8:�
"��O�23,1,0;0;0;0;:�
,!��C(A$,Y%)�19-�A$/2,Y%)A$;:�
6$ݤK:�K=�:�K>=�"!"�K<=�")"K=K�&10
@"�K>=�"0"�K<=�"9":=(��K+9)�10+1
J"��I$M=�255,�0):M?255=0:C=224:�
T���D(A$,y%)B$="":C$="":�H%=1��A$:K%=�C(��A$,H%,1)):B$=B$+�K%:C$=C$+�(K%+1):�:K%=19-�A$/2:D$=�31+�K%+�y%+B$+�31+�K%+�(y%+1)+C$:�
^zݤC(C%)�M?C%�=M?C%��C>=256��M?C%=C:?B=C%:A%=10:X%=B:Y%=B�256:�o:�J%=0�1:�23,C+J%:�I%=2�9:�B?(J%*4+I%�2):�,:C=C+2:=M?C%
�
00000000  0d 00 0a 0c 2a 46 58 31  31 2c 35 30 0d 00 14 0b  |....*FX11,50....|
00000010  2a 46 58 31 32 2c 38 0d  00 1e 0b 2a 46 58 31 35  |*FX12,8....*FX15|
00000020  2c 30 0d 00 28 10 ef 36  3a 2a 46 58 32 32 30 2c  |,0..(..6:*FX220,|
00000030  32 37 0d 00 32 0b ee 85  e5 8d 44 5a 40 0d 00 3c  |27..2.....DZ@..<|
00000040  16 de 4d 20 32 35 35 2c  42 20 38 3a 6f 3d 26 46  |..M 255,B 8:o=&F|
00000050  46 46 31 0d 00 46 f8 eb  34 3a f2 49 3a f2 53 3a  |FF1..F..4:.I:.S:|
00000060  f5 3a 53 25 3d a4 4b 3a  4c 25 3d a4 4b 3a eb 35  |.:S%=.K:L%=.K:.5|
00000070  3a 44 25 3d b3 28 36 29  3a 45 25 3d 44 25 83 36  |:D%=.(6):E%=D%.6|
00000080  2b 31 3a 46 25 3d 45 25  83 36 2b 31 3a 47 25 3d  |+1:F%=E%.6+1:G%=|
00000090  46 25 83 36 2b 31 3a ef  31 39 2c 30 2c 44 25 3b  |F%.6+1:.19,0,D%;|
000000a0  30 3b 31 39 2c 31 2c 45  25 3b 30 3b 31 39 2c 32  |0;19,1,E%;0;19,2|
000000b0  2c 46 25 3b 30 3b 31 39  2c 33 2c 47 25 3b 30 3b  |,F%;0;19,3,G%;0;|
000000c0  35 3a 5a 25 3d 35 3a 43  25 3d 31 3a da 3a f5 42  |5:Z%=5:C%=1:.:.B|
000000d0  25 3d b3 28 35 29 2d 31  3a fd 42 25 3c 3e 32 3a  |%=.(5)-1:.B%<>2:|
000000e0  e3 59 25 3d 30 b8 31 30  32 33 88 34 2a 53 25 3a  |.Y%=0.1023.4*S%:|
000000f0  43 25 3d 43 25 83 37 2b  31 3a e6 42 25 2c 43 25  |C%=C%.7+1:.B%,C%|
00000100  3a ec 30 2c 30 3a f0 5a  25 2c 31 32 37 38 2c 59  |:.0,0:.Z%,1278,Y|
00000110  25 3a ec 31 32 37 38 2c  30 3a f0 5a 25 2c 30 2c  |%:.1278,0:.Z%,0,|
00000120  59 25 3a ed 3a e3 58 25  3d 30 b8 36 34 32 88 38  |Y%:.:.X%=0.642.8|
00000130  2a 4c 25 3a ec 30 2c 30  3a f0 5a 25 2c 28 31 32  |*L%:.0,0:.Z%,(12|
00000140  37 38 2d 58 25 29 2c 31  30 32 30 0d 00 50 1c ec  |78-X%),1020..P..|
00000150  31 32 37 38 2c 30 3a f0  5a 25 2c 58 25 2c 31 30  |1278,0:.Z%,X%,10|
00000160  32 30 3a ed 3a fd a3 0d  00 5a 20 e7 9f 3c 3e 31  |20:.:....Z ..<>1|
00000170  37 f6 3a f1 22 20 61 74  20 6c 69 6e 65 20 22 3b  |7.:." at line ";|
00000180  9e 3a e5 8d 74 42 40 0d  00 64 d3 f5 3a eb 34 3a  |.:..tB@..d..:.4:|
00000190  db 3a f2 43 28 22 57 68  69 63 68 20 64 6f 20 79  |.:.C("Which do y|
000001a0  6f 75 20 77 61 6e 74 20  74 6f 20 64 6f 20 3f 22  |ou want to do ?"|
000001b0  2c 31 30 29 3a f1 8a 31  30 2c bc 2b 33 29 22 22  |,10):..10,.+3)""|
000001c0  3b 3a f2 6e 28 22 52 22  29 3a f1 22 65 70 65 61  |;:.n("R"):."epea|
000001d0  74 20 74 68 69 73 20 70  72 6f 67 72 61 6d 22 3a  |t this program":|
000001e0  f1 8a 31 30 2c bc 2b 31  29 22 47 6f 20 74 6f 20  |..10,.+1)"Go to |
000001f0  22 3b 3a f2 6e 28 22 4e  22 29 3a f1 22 65 78 74  |";:.n("N"):."ext|
00000200  20 70 72 6f 67 72 61 6d  22 3a f1 8a 31 30 2c bc  | program":..10,.|
00000210  2b 31 29 22 52 65 74 75  72 6e 20 74 6f 20 6d 61  |+1)"Return to ma|
00000220  69 6e 20 22 3b 3a f2 6e  28 22 4d 22 29 3a f1 22  |in ";:.n("M"):."|
00000230  65 6e 75 22 3a f1 8a 31  30 2c bc 2b 31 29 22 22  |enu":..10,.+1)""|
00000240  3b 3a f2 6e 28 22 45 22  29 3a f1 22 78 69 74 20  |;:.n("E"):."xit |
00000250  66 72 6f 6d 20 64 69 73  63 22 0d 00 6e a0 f1 8a  |from disc"..n...|
00000260  30 2c bc 2b 33 29 22 43  68 6f 6f 73 65 20 66 72  |0,.+3)"Choose fr|
00000270  6f 6d 20 22 3b 3a f2 6e  28 22 52 22 29 3a f1 22  |om ";:.n("R"):."|
00000280  65 70 65 61 74 2c 20 22  3b 3a f2 6e 28 22 4e 22  |epeat, ";:.n("N"|
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000002a0  4d 22 29 3a f1 22 65 6e  75 20 6f 72 20 22 3b 3a  |M"):."enu or ";:|
000002b0  f2 6e 28 22 45 22 29 3a  f1 22 78 69 74 20 22 3b  |.n("E"):."xit ";|
000002c0  3a 41 24 3d be 3a fd 28  41 24 3d 22 52 22 29 84  |:A$=.:.(A$="R").|
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000002f0  3d 22 52 22 8c e5 8d 44  46 40 0d 00 78 23 e7 41  |="R"...DF@..x#.A|
00000300  24 3d 22 4e 22 8c 50 25  3d 39 8b e7 41 24 3d 22  |$="N".P%=9..A$="|
00000310  4d 22 8c 50 25 3d 31 8b  50 25 3d 31 37 0d 00 82  |M".P%=1.P%=17...|
00000320  08 2a 46 58 34 0d 00 8c  10 ef 32 31 3a 2a 46 58  |.*FX4.....21:*FX|
00000330  32 32 30 2c 30 0d 00 96  0b 2a 46 58 31 35 2c 31  |220,0....*FX15,1|
00000340  0d 00 a0 0c 2a 46 58 32  30 31 2c 31 0d 00 aa 0d  |....*FX201,1....|
00000350  d7 22 42 4f 4f 54 22 3a  e0 0d 00 b4 22 dd f2 6e  |."BOOT":...."..n|
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00000390  74 74 65 72 6e 73 22 2c  31 29 3a f2 52 3a f1 27  |tterns",1):.R:.'|
000003a0  22 20 20 20 20 20 20 54  68 69 73 20 70 72 6f 67  |"      This prog|
000003b0  72 61 6d 20 67 65 6e 65  72 61 74 65 73 20 70 61  |ram generates pa|
000003c0  74 74 65 72 6e 73 22 27  22 20 20 20 77 68 69 63  |tterns"'"   whic|
000003d0  68 20 20 61 72 65 20 20  64 69 73 70 6c 61 79 65  |h  are  displaye|
000003e0  64 20 20 75 73 69 6e 67  20 68 69 67 68 2d 22 3a  |d  using high-":|
000003f0  f1 22 20 20 20 72 65 73  6f 6c 75 74 69 6f 6e 20  |."   resolution |
00000400  67 72 61 70 68 69 63 73  2e 22 27 27 3a f1 22 20  |graphics."'':." |
00000410  20 20 20 20 20 54 68 65  20 20 70 72 6f 67 72 61  |     The  progra|
00000420  6d 20 20 70 72 6f 64 75  63 65 73 20 20 20 72 61  |m  produces   ra|
00000430  6e 64 6f 6d 22 27 22 20  20 20 70 61 74 74 65 72  |ndom"'"   patter|
00000440  6e 73 20 77 68 69 63 68  20 6e 65 65 64 20 74 6f  |ns which need to|
00000450  20 62 65 20 74 72 69 67  67 65 72 65 64 22 0d 00  | be triggered"..|
00000460  c8 fd f1 22 20 20 20 62  79 20 70 72 65 73 73 69  |..."   by pressi|
00000470  6e 67 20 61 6e 79 20 74  77 6f 20 6f 66 20 74 68  |ng any two of th|
00000480  65 20 6e 75 6d 62 65 72  22 27 22 20 20 20 6b 65  |e number"'"   ke|
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000004a0  20 20 20 20 20 20 45 61  63 68 20 74 69 6d 65 20  |      Each time |
000004b0  61 20 70 61 74 74 65 72  6e 20 66 69 6e 69 73 68  |a pattern finish|
000004c0  65 73 2c 22 27 22 20 20  20 70 72 65 73 73 20 74  |es,"'"   press t|
000004d0  77 6f 20 20 6f 66 20 74  68 65 20 6e 75 6d 62 65  |wo  of the numbe|
000004e0  72 20 6b 65 79 73 20 69  6e 22 3a f1 22 20 20 20  |r keys in":."   |
000004f0  73 65 71 75 65 6e 63 65  20 20 20 74 6f 20 20 70  |sequence   to  p|
00000500  72 6f 64 75 63 65 20 20  20 61 6e 6f 74 68 65 72  |roduce   another|
00000510  22 27 22 20 20 20 70 61  74 74 65 72 6e 2c 20 6f  |"'"   pattern, o|
00000520  72 20 20 70 72 65 73 73  20 45 53 43 41 50 45 20  |r  press ESCAPE |
00000530  74 6f 20 20 67 6f 22 3a  f1 22 20 20 20 6f 6e 20  |to  go":."   on |
00000540  74 6f 20 74 68 65 20 6e  65 78 74 20 70 72 6f 67  |to the next prog|
00000550  72 61 6d 2e 22 3a f2 50  3a f2 52 0d 00 d2 6a f1  |ram.":.P:.R...j.|
00000560  22 20 20 20 20 20 20 53  74 61 72 74 20 74 68 65  |"      Start the|
00000570  20 70 61 74 74 65 72 6e  20 67 65 6e 65 72 61 74  | pattern generat|
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00000590  79 20 20 70 72 65 73 73  69 6e 67 20 20 74 77 6f  |y  pressing  two|
000005a0  20 20 6e 75 6d 62 65 72  22 3a f1 22 20 20 20 6b  |  number":."   k|
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000005c0  2e 2e 22 3a e1 0d 00 dc  39 dd f2 50 3a f1 8a 33  |..":....9..P:..3|
000005d0  2c 32 39 29 3b 22 50 72  65 73 73 20 74 68 65 20  |,29);"Press the |
000005e0  53 50 41 43 45 20 42 41  52 20 74 6f 20 63 6f 6e  |SPACE BAR to con|
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00000650  14 59 25 3d 31 3a e7 58  25 3d 37 38 8c 59 25 3d  |.Y%=1:.X%=78.Y%=|
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000007d0  6f 3a e3 4a 25 3d 30 b8  31 3a ef 32 33 2c 43 2b  |o:.J%=0.1:.23,C+|
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00000800  2b 32 3a 3d 4d 3f 43 25  0d ff                    |+2:=M?C%..|
0000080a
Welcome/Patterns.m0
Welcome/Patterns.m1
Welcome/Patterns.m2
Welcome/Patterns.m4
Welcome/Patterns.m5