Home » Personal collection » Acorn hard disk » files » BASIC » Mandlebrot
Mandlebrot
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 hard disk » files » BASIC |
| Filename: | Mandlebrot |
| Read OK: | ✔ |
| File size: | 015B bytes |
| Load address: | 0000 |
| Exec address: | 0000 |
Duplicates
There are 2 duplicate copies of this file in the archive:
- Personal collection » Acorn ADFS disks » Archimedes » Dominic_3.ADF » Files/Programs/Mandlebrot
- Personal collection » Acorn ADFS disks » Greaseweazled » adfs_Dominic_3.adf » Files/Programs/Mandlebrot
- Personal collection » Acorn hard disk » files » BASIC » Mandlebrot
File contents
10 REM >Mandlebrot 20 MODE 15:INPUT"X Minimum";xm 30 INPUT"Y Minimum";ym 40 INPUT"X Maximum";xmax 50 INPUT"Y Maximum";ymax 60 FORXS=0TO1200STEP2:FORYS=0TO1200STEP2 70 PROCcalculate(xm+((xmax-xm)/1200)*XS,ym+((ymax-ym)/1200)*YS) 80 MOVEXS,YS:GCOL0,I:DRAWXS,YS:NEXT, 90 GOTO 90 1000 DEFPROCcalculate(X,Y):I=0:U=X:V=Y 1010 UN=U*V*X:V=U^2-V^2-Y:U=UN 1020 IF U^2+V^2<=4 THEN I=I+1:IF I<>75 THEN 1010 1030 ENDPROC
� >Mandlebrot � 15:�"X Minimum";xm �"Y Minimum";ym ( �"X Maximum";xmax 2 �"Y Maximum";ymax < �XS=0�1200�2:�YS=0�1200�2 F> �calculate(xm+((xmax-xm)/1200)*XS,ym+((ymax-ym)/1200)*YS) P �XS,YS:�0,I:�XS,YS:�, Z � �DZ@ �! ��calculate(X,Y):I=0:U=X:V=Y � UN=U*V*X:V=U^2-V^2-Y:U=UN �( � U^2+V^2<=4 � I=I+1:� I<>75 � �drC � �
00000000 0d 00 0a 12 20 f4 20 3e 4d 61 6e 64 6c 65 62 72 |.... . >Mandlebr| 00000010 6f 74 0d 00 14 19 20 eb 20 31 35 3a e8 22 58 20 |ot.... . 15:."X | 00000020 4d 69 6e 69 6d 75 6d 22 3b 78 6d 0d 00 1e 14 20 |Minimum";xm.... | 00000030 e8 22 59 20 4d 69 6e 69 6d 75 6d 22 3b 79 6d 0d |."Y Minimum";ym.| 00000040 00 28 16 20 e8 22 58 20 4d 61 78 69 6d 75 6d 22 |.(. ."X Maximum"| 00000050 3b 78 6d 61 78 0d 00 32 16 20 e8 22 59 20 4d 61 |;xmax..2. ."Y Ma| 00000060 78 69 6d 75 6d 22 3b 79 6d 61 78 0d 00 3c 1e 20 |ximum";ymax..<. | 00000070 e3 58 53 3d 30 b8 31 32 30 30 88 32 3a e3 59 53 |.XS=0.1200.2:.YS| 00000080 3d 30 b8 31 32 30 30 88 32 0d 00 46 3e 20 f2 63 |=0.1200.2..F> .c| 00000090 61 6c 63 75 6c 61 74 65 28 78 6d 2b 28 28 78 6d |alculate(xm+((xm| 000000a0 61 78 2d 78 6d 29 2f 31 32 30 30 29 2a 58 53 2c |ax-xm)/1200)*XS,| 000000b0 79 6d 2b 28 28 79 6d 61 78 2d 79 6d 29 2f 31 32 |ym+((ymax-ym)/12| 000000c0 30 30 29 2a 59 53 29 0d 00 50 1a 20 ec 58 53 2c |00)*YS)..P. .XS,| 000000d0 59 53 3a e6 30 2c 49 3a df 58 53 2c 59 53 3a ed |YS:.0,I:.XS,YS:.| 000000e0 2c 0d 00 5a 0b 20 e5 20 8d 44 5a 40 0d 03 e8 21 |,..Z. . .DZ@...!| 000000f0 20 dd f2 63 61 6c 63 75 6c 61 74 65 28 58 2c 59 | ..calculate(X,Y| 00000100 29 3a 49 3d 30 3a 55 3d 58 3a 56 3d 59 0d 03 f2 |):I=0:U=X:V=Y...| 00000110 1e 20 55 4e 3d 55 2a 56 2a 58 3a 56 3d 55 5e 32 |. UN=U*V*X:V=U^2| 00000120 2d 56 5e 32 2d 59 3a 55 3d 55 4e 0d 03 fc 28 20 |-V^2-Y:U=UN...( | 00000130 e7 20 55 5e 32 2b 56 5e 32 3c 3d 34 20 8c 20 49 |. U^2+V^2<=4 . I| 00000140 3d 49 2b 31 3a e7 20 49 3c 3e 37 35 20 8c 20 8d |=I+1:. I<>75 . .| 00000150 64 72 43 0d 04 06 06 20 e1 0d ff |drC.... ...| 0000015b
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