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P/PTDemo

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_User_Group » EUG_35.ADF
Filename: P/PTDemo
Read OK:
File size: 08B4 bytes
Load address: FFFF1D00
Exec address: FFFF8023
File contents
   10 REM  Programming Technique Demo                 by Dominic Ford 1997
   20 :
   30 REPEAT MODE 4
   40 PRINT'"Programming Technique: Graphics Tutorial";
   50 PRINT"          by Dominic Ford 1997"''
   60 PRINT"Please Select:"''"1. Difference between flashing black/"'"   white and flashing white/black"''"2. Black stripes in MODE 6"''"3. User defined characters versus"'"   conventional graphics"''"4. Colour cycling"
   70 PRINT'"5. Exit"
   80 REPEAT k$=GET$:UNTIL INSTR("12345",k$)<>0
   90 IF k$="1" THEN PROCflash
  100 IF k$="2" THEN MODE 6:PROCstripes
  110 IF k$="3" THEN MODE1:PROCgraphic
  120 IF k$="4" THEN MODE2:PROCcycle
  130 UNTIL k$="5"
  140 MODE 6:END
  150 :
  160 DEFPROCflash
  170 VDU 19,0,8,0,0,0,19,1,15,0,0,0
  180 PRINT''"Notice that the text (flashing white/   black) is always the opposite colour    from the background (flashing black/    white."'"Press <SPACE>"
  190 REPEAT UNTIL INKEY(-99)
  200 ENDPROC
  210 :
  220 DEFPROCstripes
  230 VDU 19,0,1,0,0,0,19,7,0,0,0,0
  240 PRINT''''"Notice the black stripes between the    lines of text."'"Press <SPACE>"
  250 REPEAT UNTIL INKEY(-99)
  260 ENDPROC
  270 :
  280 DEFPROCgraphic
  290 PRINT"Stage 1: Large area, no detail"
  300 T=TIME:VDU23,255,255,255,255,255,255,255,255,255:COLOUR 1
  310 FORx=0 TO 9:FOR y=2 TO 11
  320 PRINTTAB(x,y)CHR$255;
  330 NEXT,:T=TIME-T
  340 COLOUR 3:PRINTTAB(0,15)"USER DEFINED CHARS: ";T/50;"s"
  350 :
  360 T=TIME:GCOL0,1
  370 MOVE640,960:MOVE960,960:PLOT85,640,640:PLOT85,960,640
  380 T=TIME-T:PRINTTAB(0,17)"GRAPHICS: ";T/50;"s"'
  390 PRINT"For large areas with no detail, use     graphics commands to maximise speed"''"Press <SPACE>"
  400 REPEAT UNTIL INKEY(-99)
  410 :
  420 CLS:PRINT"Stage 2: Large area, much detail"
  430 T=TIME:VDU23,255,103,231,231,0,0,231,231,231:COLOUR 1
  440 FORx=0 TO 9:FOR y=2 TO 11
  450 PRINTTAB(x,y)CHR$255;
  460 NEXT,:T=TIME-T
  470 COLOUR 3:PRINTTAB(0,15)"USER DEFINED CHARS: ";T/50;"s"
  480 :
  490 T=TIME:GCOL0,1
  500 MOVE640,960:MOVE960,960:PLOT85,640,640:PLOT85,960,640
  510 GCOL0,0:FORx=652 TO 944 STEP 32:MOVEx,640:DRAWx,960:MOVEx+4,640:DRAWx+4,960:NEXT
  520 FORy=652 TO 944 STEP 32:MOVE640,y:DRAW960,y:MOVE640,y+4:DRAW960,y+4:NEXT
  530 FORx=640 TO 960 STEP 32:FORy=640 TO 960 STEP 32:MOVEx,y:DRAWx,y:NEXT,
  540 T=TIME-T:PRINTTAB(0,17)"GRAPHICS: ";T/50;"s"'
  550 PRINT"For large areas with much detail, use   user defined characters to maximise     speed"''"Press <SPACE>"
  560 REPEAT UNTIL NOT INKEY(-99)
  570 REPEAT UNTIL INKEY(-99)
  580 ENDPROC
  590 :
  600 DEFPROCcycle
  610 FORr=0 TO 15:GCOL0,r:MOVE0,r*64:MOVE1280,r*64:PLOT85,0,64+r*64:PLOT85,1280,64+r*64:NEXT
  620 :
  630 REPEAT
  640 FORr=0 TO 15:VDU19,r,7,0,0,0
  650 T=TIME:REPEAT UNTIL TIME>T+10
  660 NEXT
  670 :
  680 FORr=15 TO 0 STEP -1:VDU19,r,0,0,0,0
  690 T=TIME:REPEAT UNTIL TIME>T+10
  700 NEXT
  710 UNTIL INKEY(-99)
  720 ENDPROC

G �  Programming Technique Demo                 by Dominic Ford 1997
 :

 � � 4
(2 �'"Programming Technique: Graphics Tutorial";
2( �"          by Dominic Ford 1997"''
<� �"Please Select:"''"1. Difference between flashing black/"'"   white and flashing white/black"''"2. Black stripes in MODE 6"''"3. User defined characters versus"'"   conventional graphics"''"4. Colour cycling"
F �'"5. Exit"
P � k$=�:� �"12345",k$)<>0
Z � k$="1" � �flash
d � k$="2" � � 6:�stripes
n � k$="3" � �1:�graphic
x � k$="4" � �2:�cycle
�
 � k$="5"
�
 � 6:�
� :
� ��flash
�! � 19,0,8,0,0,0,19,1,15,0,0,0
�� �''"Notice that the text (flashing white/   black) is always the opposite colour    from the background (flashing black/    white."'"Press <SPACE>"
� � � �(-99)
� �
� :
� ��stripes
�  � 19,0,1,0,0,0,19,7,0,0,0,0
�R �''''"Notice the black stripes between the    lines of text."'"Press <SPACE>"
� � � �(-99)
 �
 :
 ��graphic
"& �"Stage 1: Large area, no detail"
,4 T=�:�23,255,255,255,255,255,255,255,255,255:� 1
6 �x=0 � 9:� y=2 � 11
@ �x,y)�255;
J
 �,:T=�-T
T/ � 3:�0,15)"USER DEFINED CHARS: ";T/50;"s"
^ :
h
 T=�:�0,1
r. �640,960:�960,960:�85,640,640:�85,960,640
|( T=�-T:�0,17)"GRAPHICS: ";T/50;"s"'
�d �"For large areas with no detail, use     graphics commands to maximise speed"''"Press <SPACE>"
� � � �(-99)
� :
�* �:�"Stage 2: Large area, much detail"
�0 T=�:�23,255,103,231,231,0,0,231,231,231:� 1
� �x=0 � 9:� y=2 � 11
� �x,y)�255;
�
 �,:T=�-T
�/ � 3:�0,15)"USER DEFINED CHARS: ";T/50;"s"
� :
�
 T=�:�0,1
�. �640,960:�960,960:�85,640,640:�85,960,640
�= �0,0:�x=652 � 944 � 32:�x,640:�x,960:�x+4,640:�x+4,960:�
8 �y=652 � 944 � 32:�640,y:�960,y:�640,y+4:�960,y+4:�
5 �x=640 � 960 � 32:�y=640 � 960 � 32:�x,y:�x,y:�,
( T=�-T:�0,17)"GRAPHICS: ";T/50;"s"'
&n �"For large areas with much detail, use   user defined characters to maximise     speed"''"Press <SPACE>"
0 � � � �(-99)
: � � �(-99)
D �
N :
X ��cycle
bG �r=0 � 15:�0,r:�0,r*64:�1280,r*64:�85,0,64+r*64:�85,1280,64+r*64:�
l :
v �
� �r=0 � 15:�19,r,7,0,0,0
� T=�:� � �>T+10
� �
� :
�! �r=15 � 0 � -1:�19,r,0,0,0,0
� T=�:� � �>T+10
� �
�
 � �(-99)
� �
�
00000000  0d 00 0a 47 20 f4 20 20  50 72 6f 67 72 61 6d 6d  |...G .  Programm|
00000010  69 6e 67 20 54 65 63 68  6e 69 71 75 65 20 44 65  |ing Technique De|
00000020  6d 6f 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |mo              |
00000030  20 20 20 62 79 20 44 6f  6d 69 6e 69 63 20 46 6f  |   by Dominic Fo|
00000040  72 64 20 31 39 39 37 0d  00 14 06 20 3a 0d 00 1e  |rd 1997.... :...|
00000050  0a 20 f5 20 eb 20 34 0d  00 28 32 20 f1 27 22 50  |. . . 4..(2 .'"P|
00000060  72 6f 67 72 61 6d 6d 69  6e 67 20 54 65 63 68 6e  |rogramming Techn|
00000070  69 71 75 65 3a 20 47 72  61 70 68 69 63 73 20 54  |ique: Graphics T|
00000080  75 74 6f 72 69 61 6c 22  3b 0d 00 32 28 20 f1 22  |utorial";..2( ."|
00000090  20 20 20 20 20 20 20 20  20 20 62 79 20 44 6f 6d  |          by Dom|
000000a0  69 6e 69 63 20 46 6f 72  64 20 31 39 39 37 22 27  |inic Ford 1997"'|
000000b0  27 0d 00 3c d6 20 f1 22  50 6c 65 61 73 65 20 53  |'..<. ."Please S|
000000c0  65 6c 65 63 74 3a 22 27  27 22 31 2e 20 44 69 66  |elect:"''"1. Dif|
000000d0  66 65 72 65 6e 63 65 20  62 65 74 77 65 65 6e 20  |ference between |
000000e0  66 6c 61 73 68 69 6e 67  20 62 6c 61 63 6b 2f 22  |flashing black/"|
000000f0  27 22 20 20 20 77 68 69  74 65 20 61 6e 64 20 66  |'"   white and f|
00000100  6c 61 73 68 69 6e 67 20  77 68 69 74 65 2f 62 6c  |lashing white/bl|
00000110  61 63 6b 22 27 27 22 32  2e 20 42 6c 61 63 6b 20  |ack"''"2. Black |
00000120  73 74 72 69 70 65 73 20  69 6e 20 4d 4f 44 45 20  |stripes in MODE |
00000130  36 22 27 27 22 33 2e 20  55 73 65 72 20 64 65 66  |6"''"3. User def|
00000140  69 6e 65 64 20 63 68 61  72 61 63 74 65 72 73 20  |ined characters |
00000150  76 65 72 73 75 73 22 27  22 20 20 20 63 6f 6e 76  |versus"'"   conv|
00000160  65 6e 74 69 6f 6e 61 6c  20 67 72 61 70 68 69 63  |entional graphic|
00000170  73 22 27 27 22 34 2e 20  43 6f 6c 6f 75 72 20 63  |s"''"4. Colour c|
00000180  79 63 6c 69 6e 67 22 0d  00 46 10 20 f1 27 22 35  |ycling"..F. .'"5|
00000190  2e 20 45 78 69 74 22 0d  00 50 1d 20 f5 20 6b 24  |. Exit"..P. . k$|
000001a0  3d be 3a fd 20 a7 22 31  32 33 34 35 22 2c 6b 24  |=.:. ."12345",k$|
000001b0  29 3c 3e 30 0d 00 5a 16  20 e7 20 6b 24 3d 22 31  |)<>0..Z. . k$="1|
000001c0  22 20 8c 20 f2 66 6c 61  73 68 0d 00 64 1c 20 e7  |" . .flash..d. .|
000001d0  20 6b 24 3d 22 32 22 20  8c 20 eb 20 36 3a f2 73  | k$="2" . . 6:.s|
000001e0  74 72 69 70 65 73 0d 00  6e 1b 20 e7 20 6b 24 3d  |tripes..n. . k$=|
000001f0  22 33 22 20 8c 20 eb 31  3a f2 67 72 61 70 68 69  |"3" . .1:.graphi|
00000200  63 0d 00 78 19 20 e7 20  6b 24 3d 22 34 22 20 8c  |c..x. . k$="4" .|
00000210  20 eb 32 3a f2 63 79 63  6c 65 0d 00 82 0d 20 fd  | .2:.cycle.... .|
00000220  20 6b 24 3d 22 35 22 0d  00 8c 0a 20 eb 20 36 3a  | k$="5".... . 6:|
00000230  e0 0d 00 96 06 20 3a 0d  00 a0 0c 20 dd f2 66 6c  |..... :.... ..fl|
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00000280  74 20 28 66 6c 61 73 68  69 6e 67 20 77 68 69 74  |t (flashing whit|
00000290  65 2f 20 20 20 62 6c 61  63 6b 29 20 69 73 20 61  |e/   black) is a|
000002a0  6c 77 61 79 73 20 74 68  65 20 6f 70 70 6f 73 69  |lways the opposi|
000002b0  74 65 20 63 6f 6c 6f 75  72 20 20 20 20 66 72 6f  |te colour    fro|
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000002d0  20 28 66 6c 61 73 68 69  6e 67 20 62 6c 61 63 6b  | (flashing black|
000002e0  2f 20 20 20 20 77 68 69  74 65 2e 22 27 22 50 72  |/    white."'"Pr|
000002f0  65 73 73 20 3c 53 50 41  43 45 3e 22 0d 00 be 0f  |ess <SPACE>"....|
00000300  20 f5 20 fd 20 a6 28 2d  39 39 29 0d 00 c8 06 20  | . . .(-99).... |
00000310  e1 0d 00 d2 06 20 3a 0d  00 dc 0e 20 dd f2 73 74  |..... :.... ..st|
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00000370  20 74 68 65 20 20 20 20  6c 69 6e 65 73 20 6f 66  | the    lines of|
00000380  20 74 65 78 74 2e 22 27  22 50 72 65 73 73 20 3c  | text."'"Press <|
00000390  53 50 41 43 45 3e 22 0d  00 fa 0f 20 f5 20 fd 20  |SPACE>".... . . |
000003a0  a6 28 2d 39 39 29 0d 01  04 06 20 e1 0d 01 0e 06  |.(-99).... .....|
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00000430  31 31 0d 01 40 10 20 f1  8a 78 2c 79 29 bd 32 35  |11..@. ..x,y).25|
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000004b0  36 34 30 3a f0 38 35 2c  39 36 30 2c 36 34 30 0d  |640:.85,960,640.|
000004c0  01 7c 28 20 54 3d 91 2d  54 3a f1 8a 30 2c 31 37  |.|( T=.-T:..0,17|
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00000530  69 73 65 20 73 70 65 65  64 22 27 27 22 50 72 65  |ise speed"''"Pre|
00000540  73 73 20 3c 53 50 41 43  45 3e 22 0d 01 90 0f 20  |ss <SPACE>".... |
00000550  f5 20 fd 20 a6 28 2d 39  39 29 0d 01 9a 06 20 3a  |. . .(-99).... :|
00000560  0d 01 a4 2a 20 db 3a f1  22 53 74 61 67 65 20 32  |...* .:."Stage 2|
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00000580  63 68 20 64 65 74 61 69  6c 22 0d 01 ae 30 20 54  |ch detail"...0 T|
00000590  3d 91 3a ef 32 33 2c 32  35 35 2c 31 30 33 2c 32  |=.:.23,255,103,2|
000005a0  33 31 2c 32 33 31 2c 30  2c 30 2c 32 33 31 2c 32  |31,231,0,0,231,2|
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000005e0  35 3b 0d 01 cc 0d 20 ed  2c 3a 54 3d 91 2d 54 0d  |5;.... .,:T=.-T.|
000005f0  01 d6 2f 20 fb 20 33 3a  f1 8a 30 2c 31 35 29 22  |../ . 3:..0,15)"|
00000600  55 53 45 52 20 44 45 46  49 4e 45 44 20 43 48 41  |USER DEFINED CHA|
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00000630  31 0d 01 f4 2e 20 ec 36  34 30 2c 39 36 30 3a ec  |1.... .640,960:.|
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00000650  36 34 30 3a f0 38 35 2c  39 36 30 2c 36 34 30 0d  |640:.85,960,640.|
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000006d0  2b 34 3a ed 0d 02 12 35  20 e3 78 3d 36 34 30 20  |+4:....5 .x=640 |
000006e0  b8 20 39 36 30 20 88 20  33 32 3a e3 79 3d 36 34  |. 960 . 32:.y=64|
000006f0  30 20 b8 20 39 36 30 20  88 20 33 32 3a ec 78 2c  |0 . 960 . 32:.x,|
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00000710  91 2d 54 3a f1 8a 30 2c  31 37 29 22 47 52 41 50  |.-T:..0,17)"GRAP|
00000720  48 49 43 53 3a 20 22 3b  54 2f 35 30 3b 22 73 22  |HICS: ";T/50;"s"|
00000730  27 0d 02 26 6e 20 f1 22  46 6f 72 20 6c 61 72 67  |'..&n ."For larg|
00000740  65 20 61 72 65 61 73 20  77 69 74 68 20 6d 75 63  |e areas with muc|
00000750  68 20 64 65 74 61 69 6c  2c 20 75 73 65 20 20 20  |h detail, use   |
00000760  75 73 65 72 20 64 65 66  69 6e 65 64 20 63 68 61  |user defined cha|
00000770  72 61 63 74 65 72 73 20  74 6f 20 6d 61 78 69 6d  |racters to maxim|
00000780  69 73 65 20 20 20 20 20  73 70 65 65 64 22 27 27  |ise     speed"''|
00000790  22 50 72 65 73 73 20 3c  53 50 41 43 45 3e 22 0d  |"Press <SPACE>".|
000007a0  02 30 11 20 f5 20 fd 20  ac 20 a6 28 2d 39 39 29  |.0. . . . .(-99)|
000007b0  0d 02 3a 0f 20 f5 20 fd  20 a6 28 2d 39 39 29 0d  |..:. . . .(-99).|
000007c0  02 44 06 20 e1 0d 02 4e  06 20 3a 0d 02 58 0c 20  |.D. ...N. :..X. |
000007d0  dd f2 63 79 63 6c 65 0d  02 62 47 20 e3 72 3d 30  |..cycle..bG .r=0|
000007e0  20 b8 20 31 35 3a e6 30  2c 72 3a ec 30 2c 72 2a  | . 15:.0,r:.0,r*|
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00000800  35 2c 30 2c 36 34 2b 72  2a 36 34 3a f0 38 35 2c  |5,0,64+r*64:.85,|
00000810  31 32 38 30 2c 36 34 2b  72 2a 36 34 3a ed 0d 02  |1280,64+r*64:...|
00000820  6c 06 20 3a 0d 02 76 06  20 f5 0d 02 80 1c 20 e3  |l. :..v. ..... .|
00000830  72 3d 30 20 b8 20 31 35  3a ef 31 39 2c 72 2c 37  |r=0 . 15:.19,r,7|
00000840  2c 30 2c 30 2c 30 0d 02  8a 13 20 54 3d 91 3a f5  |,0,0,0.... T=.:.|
00000850  20 fd 20 91 3e 54 2b 31  30 0d 02 94 06 20 ed 0d  | . .>T+10.... ..|
00000860  02 9e 06 20 3a 0d 02 a8  21 20 e3 72 3d 31 35 20  |... :...! .r=15 |
00000870  b8 20 30 20 88 20 2d 31  3a ef 31 39 2c 72 2c 30  |. 0 . -1:.19,r,0|
00000880  2c 30 2c 30 2c 30 0d 02  b2 13 20 54 3d 91 3a f5  |,0,0,0.... T=.:.|
00000890  20 fd 20 91 3e 54 2b 31  30 0d 02 bc 06 20 ed 0d  | . .>T+10.... ..|
000008a0  02 c6 0d 20 fd 20 a6 28  2d 39 39 29 0d 02 d0 06  |... . .(-99)....|
000008b0  20 e1 0d ff                                       | ...|
000008b4
P/PTDemo.m0
P/PTDemo.m1
P/PTDemo.m2
P/PTDemo.m4
P/PTDemo.m5