Home » Personal collection » Acorn tapes » Own_Work » drawer_tr_tape01b_hf90_acorn_mandel.wav » Mandel2
Mandel2
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 » Own_Work » drawer_tr_tape01b_hf90_acorn_mandel.wav |
Filename: | Mandel2 |
Read OK: | ❌ |
File size: | 08C0 bytes |
Load address: | FFFF0E00 |
Exec address: | FFFF8023 |
File contents
� PROGRAM MANDLEBROT PLOT � VERSION B0.2 � AUTHOR Kate Crennell (� BEEBUG MAY 1986 2"� PROGRAM SUBJECT TO COPYRIGHT <: d� KOL%(4),C$(7) n� � � �DTA x�C$(0)=�135+"BLACK, ":C$(1)=�129+"RED, ":C$(2)=�130+"GREEN, ":C$(3)=�131+"YELLOW,":C31,H%,0:@%=4:�T%+3:@%=&20508:�XMIN;:@%=&10308:�W;:@%=&20508:�YMIN;:@%=10308:�H:@%=11-%*4:�I%=0�C%:�?(&C10+I%);:�?(&C00+I%):�255:�7:�:@%=8/M% �(E%=6:�4,23;8202;0;0;0;28,G%,31,H%,29 ��mandel(XMIN,YMIN,DX,DY) �E%=5:�7,4,28,G%,31,H%,26:� �6�"Save Y/N";:�Q:�A$="Y"�"Filename",F$:�TDA � �TvA '�F$,"""")<>0�dz@ � � �(F$)>6�dz@ F$="P."+�(M%+2+2*T%)+F$ +�M%=1 �I%=0�3:?(I%+&7FFC)=KOL%(I%)�16:� "!$&C80="SAVE "+F$+" 3000 8000" ,/U%=X%:V%=Y%:X%=&80:Y%=&C:�&FFF7:X%=U%:Y%=V% 6�box:�A$="Y"�7:�tj@ @#�:�OL%(I%))+" "; �H�:�'"Other possible colours:":�I%=0�7:F%=0:�N%=0�3:�KOL%(N%)=I% F%=1 ��:�F%=0 �;C$(I%);�1; �� �5I%=10:�'"Which colour",A$:�A$=""�TrE � A$=�A$,3) �"�N%=0�7:�A$=�C$(N%),2,3) I%=N% �� ��I%=10�tpD ��M%=2 ?(&BFF+K%)=I%:�ThE �2F%=0:�N%=0�3:�I%=KOL%(N%) ?(&BFF+K%))=N%:F%=-1 �"�F%=0KOL%(?(&BFF+K%))=I%:�ThE �.�:�F%>0KOL%(F%-1)=I%:?(&BFF+K%)=F%-1:�ThE "�F%=0KOL%(?(&BFF+K%))=I%:�ThE -�I%=0�3:F%=0:�N%=0�C%:�?(&C00+N%)=I% F%=1 �:�F%=0KOL%(I%)=16 � (�K%=1�d|C 27�"What n width="W'"Low Y bound="YMIN;", height="H':�ask:�A$="Y"��t~E ��"New left X",XMIN ��"New width",W:�W=0�t`E ��"New bottom Y",YMIN ��"New height",H:�H=0�ttE �EL%=256/M%:R=�(H/W):�R>1 Y%=L%-1:X%=Y%/R+0.5 � X%=L%-1:Y%=X%*R+0.5 �Y@%=4:�'"The plot will have ";X%+1;" columns"'"and ";Y%+1;" rows."'':�ask:�A$="Y"��dfE �`�'"New number of columns ( <";L%+1" )";:�,I%:�I%<1 � I%>L% �" Illegal value":�dRE � X%=I%-1 �\�"New number of rows ( <";L%+1" )";:�,I%:�I%<1 � I%>L% �" Illegal value":�dRE � Y%=I%-1 �DX=W/X%:DY=H/Y%:� �: � ��ask *FX202,40 �;" Is this OK (Y/N)";�Q:� ��Q:�;"?"; "(A$=�(� � 223):�A$<>"Y"� A$<>"N"�TbF , �;A$:� 6: @ ��mode JT%=-1:@%=10 T'�:�7,1)�134"The Mandelbrot Set"''' ^��"There are two available plot modes:"''"1)"+�131+"High resolution (256 lines) and"'"four colours,"''"2) Low resolution (128 lines) and"'�131+"eight"+�135+"colours."' hD�M%=0 �'"Which mode would you like (1 or 2)? ";:M%=�-48 � � �D|F �
00000000 0d 00 0a 1d f4 20 50 52 4f 47 52 41 4d 20 4d 41 |..... PROGRAM MA| 00000010 4e 44 4c 45 42 52 4f 54 20 50 4c 4f 54 0d 00 14 |NDLEBROT PLOT...| 00000020 12 f4 20 56 45 52 53 49 4f 4e 20 42 30 2e 32 0d |.. VERSION B0.2.| 00000030 00 1e 1a f4 20 41 55 54 48 4f 52 20 4b 61 74 65 |.... AUTHOR Kate| 00000040 20 43 72 65 6e 6e 65 6c 6c 0d 00 28 15 f4 20 42 | Crennell..(.. B| 00000050 45 45 42 55 47 20 4d 41 59 20 31 39 38 36 0d 00 |EEBUG MAY 1986..| 00000060 32 22 f4 20 50 52 4f 47 52 41 4d 20 53 55 42 4a |2". PROGRAM SUBJ| 00000070 45 43 54 20 54 4f 20 43 4f 50 59 52 49 47 48 54 |ECT TO COPYRIGHT| 00000080 0d 00 3c 05 3a 0d 00 64 13 de 20 4b 4f 4c 25 28 |..<.:..d.. KOL%(| 00000090 34 29 2c 43 24 28 37 29 0d 00 6e 0e ee 20 85 20 |4),C$(7)..n.. . | 000000a0 e5 20 8d 44 54 41 0d 00 78 ad 43 24 28 30 29 3d |. .DTA..x.C$(0)=| 000000b0 bd 31 33 35 2b 22 42 4c 41 43 4b 2c 20 20 22 3a |.135+"BLACK, ":| 000000c0 43 24 28 31 29 3d bd 31 32 39 2b 22 52 45 44 2c |C$(1)=.129+"RED,| 000000d0 20 20 20 22 3a 43 24 28 32 29 3d bd 31 33 30 2b | ":C$(2)=.130+| 000000e0 22 47 52 45 45 4e 2c 20 22 3a 43 24 28 33 29 3d |"GREEN, ":C$(3)=| 000000f0 bd 31 33 31 2b 22 59 45 4c 4c 4f 57 2c 22 3a 43 |.131+"YELLOW,":C| 00000100 33 31 2c 48 25 2c 30 3a 40 25 3d 34 3a f1 54 25 |31,H%,0:@%=4:.T%| 00000110 2b 33 3a 40 25 3d 26 32 30 35 30 38 3a f1 58 4d |+3:@%=&20508:.XM| 00000120 49 4e 3b 3a 40 25 3d 26 31 30 33 30 38 3a f1 57 |IN;:@%=&10308:.W| 00000130 3b 3a 40 25 3d 26 32 30 35 30 38 3a f1 59 4d 49 |;:@%=&20508:.YMI| 00000140 4e 3b 3a 40 25 3d 31 30 33 30 38 3a f1 48 3a 40 |N;:@%=10308:.H:@| 00000150 25 3d 31 31 2d 25 2a 34 3a e3 49 25 3d 30 b8 43 |%=11-%*4:.I%=0.C| 00000160 25 3a f1 3f 28 26 43 31 30 2b 49 25 29 3b 3a fb |%:.?(&C10+I%);:.| 00000170 3f 28 26 43 30 30 2b 49 25 29 3a ef 32 35 35 3a |?(&C00+I%):.255:| 00000180 fb 37 3a ed 3a 40 25 3d 38 2f 4d 25 0d 00 dc 28 |.7:.:@%=8/M%...(| 00000190 45 25 3d 36 3a ef 34 2c 32 33 3b 38 32 30 32 3b |E%=6:.4,23;8202;| 000001a0 30 3b 30 3b 30 3b 32 38 2c 47 25 2c 33 31 2c 48 |0;0;0;28,G%,31,H| 000001b0 25 2c 32 39 0d 00 e6 1c f2 6d 61 6e 64 65 6c 28 |%,29.....mandel(| 000001c0 58 4d 49 4e 2c 59 4d 49 4e 2c 44 58 2c 44 59 29 |XMIN,YMIN,DX,DY)| 000001d0 0d 00 f0 1e 45 25 3d 35 3a ef 37 2c 34 2c 32 38 |....E%=5:.7,4,28| 000001e0 2c 47 25 2c 33 31 2c 48 25 2c 32 36 3a db 0d 00 |,G%,31,H%,26:...| 000001f0 fa 36 f1 22 53 61 76 65 20 59 2f 4e 22 3b 3a f2 |.6."Save Y/N";:.| 00000200 51 3a e7 41 24 3d 22 59 22 e8 22 46 69 6c 65 6e |Q:.A$="Y"."Filen| 00000210 61 6d 65 22 2c 46 24 3a e5 8d 54 44 41 20 8b 20 |ame",F$:..TDA . | 00000220 8d 54 76 41 0d 01 04 27 e7 a7 46 24 2c 22 22 22 |.TvA...'..F$,"""| 00000230 22 29 3c 3e 30 e5 8d 64 7a 40 20 8b 20 e7 20 a9 |")<>0..dz@ . . .| 00000240 28 46 24 29 3e 36 e5 8d 64 7a 40 0d 01 0e 1b 46 |(F$)>6..dz@....F| 00000250 24 3d 22 50 2e 22 2b c3 28 4d 25 2b 32 2b 32 2a |$="P."+.(M%+2+2*| 00000260 54 25 29 2b 46 24 0d 01 18 2b e7 4d 25 3d 31 20 |T%)+F$...+.M%=1 | 00000270 e3 49 25 3d 30 b8 33 3a 3f 28 49 25 2b 26 37 46 |.I%=0.3:?(I%+&7F| 00000280 46 43 29 3d 4b 4f 4c 25 28 49 25 29 83 31 36 3a |FC)=KOL%(I%).16:| 00000290 ed 0d 01 22 21 24 26 43 38 30 3d 22 53 41 56 45 |..."!$&C80="SAVE| 000002a0 20 22 2b 46 24 2b 22 20 33 30 30 30 20 38 30 30 | "+F$+" 3000 800| 000002b0 30 22 0d 01 2c 2f 55 25 3d 58 25 3a 56 25 3d 59 |0"..,/U%=X%:V%=Y| 000002c0 25 3a 58 25 3d 26 38 30 3a 59 25 3d 26 43 3a d6 |%:X%=&80:Y%=&C:.| 000002d0 26 46 46 46 37 3a 58 25 3d 55 25 3a 59 25 3d 56 |&FFF7:X%=U%:Y%=V| 000002e0 25 0d 01 36 18 f2 62 6f 78 3a e7 41 24 3d 22 59 |%..6..box:.A$="Y| 000002f0 22 eb 37 3a e5 8d 74 6a 40 0d 01 40 23 db 3a f1 |".7:..tj@..@#.:.| 00000300 4f 4c 25 28 49 25 29 29 2b 22 20 22 3b 0d 04 92 |OL%(I%))+" ";...| 00000310 48 ed 3a f1 27 22 4f 74 68 65 72 20 70 6f 73 73 |H.:.'"Other poss| 00000320 69 62 6c 65 20 63 6f 6c 6f 75 72 73 3a 22 3a e3 |ible colours:":.| 00000330 49 25 3d 30 b8 37 3a 46 25 3d 30 3a e3 4e 25 3d |I%=0.7:F%=0:.N%=| 00000340 30 b8 33 3a e7 4b 4f 4c 25 28 4e 25 29 3d 49 25 |0.3:.KOL%(N%)=I%| 00000350 20 46 25 3d 31 0d 04 9c 18 ed 3a e7 46 25 3d 30 | F%=1.....:.F%=0| 00000360 20 f1 3b 43 24 28 49 25 29 3b 89 31 3b 0d 04 a6 | .;C$(I%);.1;...| 00000370 05 ed 0d 04 b0 35 49 25 3d 31 30 3a e8 27 22 57 |.....5I%=10:.'"W| 00000380 68 69 63 68 20 63 6f 6c 6f 75 72 22 2c 41 24 3a |hich colour",A$:| 00000390 e7 41 24 3d 22 22 e5 8d 54 72 45 20 8b 20 41 24 |.A$=""..TrE . A$| 000003a0 3d c0 41 24 2c 33 29 0d 04 ba 22 e3 4e 25 3d 30 |=.A$,3)...".N%=0| 000003b0 b8 37 3a e7 41 24 3d c0 43 24 28 4e 25 29 2c 32 |.7:.A$=.C$(N%),2| 000003c0 2c 33 29 20 49 25 3d 4e 25 0d 04 c4 05 ed 0d 04 |,3) I%=N%.......| 000003d0 ce 0f e7 49 25 3d 31 30 e5 8d 74 70 44 0d 04 d8 |...I%=10..tpD...| 000003e0 1d e7 4d 25 3d 32 20 3f 28 26 42 46 46 2b 4b 25 |..M%=2 ?(&BFF+K%| 000003f0 29 3d 49 25 3a e5 8d 54 68 45 0d 04 e2 32 46 25 |)=I%:..ThE...2F%| 00000400 3d 30 3a e3 4e 25 3d 30 b8 33 3a e7 49 25 3d 4b |=0:.N%=0.3:.I%=K| 00000410 4f 4c 25 28 4e 25 29 20 3f 28 26 42 46 46 2b 4b |OL%(N%) ?(&BFF+K| 00000420 25 29 29 3d 4e 25 3a 46 25 3d 2d 31 0d 04 ec 22 |%))=N%:F%=-1..."| 00000430 e7 46 25 3d 30 4b 4f 4c 25 28 3f 28 26 42 46 46 |.F%=0KOL%(?(&BFF| 00000440 2b 4b 25 29 29 3d 49 25 3a e5 8d 54 68 45 0d 04 |+K%))=I%:..ThE..| 00000450 f6 2e ed 3a e7 46 25 3e 30 4b 4f 4c 25 28 46 25 |...:.F%>0KOL%(F%| 00000460 2d 31 29 3d 49 25 3a 3f 28 26 42 46 46 2b 4b 25 |-1)=I%:?(&BFF+K%| 00000470 29 3d 46 25 2d 31 3a e5 8d 54 68 45 0d 05 00 22 |)=F%-1:..ThE..."| 00000480 e7 46 25 3d 30 4b 4f 4c 25 28 3f 28 26 42 46 46 |.F%=0KOL%(?(&BFF| 00000490 2b 4b 25 29 29 3d 49 25 3a e5 8d 54 68 45 0d 05 |+K%))=I%:..ThE..| 000004a0 0a 2d e3 49 25 3d 30 b8 33 3a 46 25 3d 30 3a e3 |.-.I%=0.3:F%=0:.| 000004b0 4e 25 3d 30 b8 43 25 3a e7 3f 28 26 43 30 30 2b |N%=0.C%:.?(&C00+| 000004c0 4e 25 29 3d 49 25 20 46 25 3d 31 0d 05 14 16 ed |N%)=I% F%=1.....| 000004d0 3a e7 46 25 3d 30 4b 4f 4c 25 28 49 25 29 3d 31 |:.F%=0KOL%(I%)=1| 000004e0 36 0d 05 1e 05 ed 0d 05 28 0e e7 4b 25 3d 31 e5 |6.......(..K%=1.| 000004f0 8d 64 7c 43 0d 05 32 37 e8 22 57 68 61 74 20 6e |.d|C..27."What n| 00000500 20 77 69 64 74 68 3d 22 57 27 22 4c 6f 77 20 59 | width="W'"Low Y| 00000510 20 62 6f 75 6e 64 3d 22 59 4d 49 4e 3b 22 2c 20 | bound="YMIN;", | 00000520 68 65 69 67 68 74 3d 22 48 27 3a f2 61 73 6b 3a |height="H':.ask:| 00000530 e7 41 24 3d 22 59 22 8c 8d 74 7e 45 0d 05 96 16 |.A$="Y"..t~E....| 00000540 e8 22 4e 65 77 20 6c 65 66 74 20 58 22 2c 58 4d |."New left X",XM| 00000550 49 4e 0d 05 a0 1c e8 22 4e 65 77 20 77 69 64 74 |IN....."New widt| 00000560 68 22 2c 57 3a e7 57 3d 30 e5 8d 74 60 45 0d 05 |h",W:.W=0..t`E..| 00000570 aa 18 e8 22 4e 65 77 20 62 6f 74 74 6f 6d 20 59 |..."New bottom Y| 00000580 22 2c 59 4d 49 4e 0d 05 b4 1d e8 22 4e 65 77 20 |",YMIN....."New | 00000590 68 65 69 67 68 74 22 2c 48 3a e7 48 3d 30 e5 8d |height",H:.H=0..| 000005a0 74 74 45 0d 05 be 45 4c 25 3d 32 35 36 2f 4d 25 |ttE...EL%=256/M%| 000005b0 3a 52 3d 94 28 48 2f 57 29 3a e7 52 3e 31 20 59 |:R=.(H/W):.R>1 Y| 000005c0 25 3d 4c 25 2d 31 3a 58 25 3d 59 25 2f 52 2b 30 |%=L%-1:X%=Y%/R+0| 000005d0 2e 35 20 8b 20 58 25 3d 4c 25 2d 31 3a 59 25 3d |.5 . X%=L%-1:Y%=| 000005e0 58 25 2a 52 2b 30 2e 35 0d 05 c8 59 40 25 3d 34 |X%*R+0.5...Y@%=4| 000005f0 3a f1 27 22 54 68 65 20 70 6c 6f 74 20 77 69 6c |:.'"The plot wil| 00000600 6c 20 68 61 76 65 20 22 3b 58 25 2b 31 3b 22 20 |l have ";X%+1;" | 00000610 63 6f 6c 75 6d 6e 73 22 27 22 61 6e 64 20 22 3b |columns"'"and ";| 00000620 59 25 2b 31 3b 22 20 72 6f 77 73 2e 22 27 27 3a |Y%+1;" rows."'':| 00000630 f2 61 73 6b 3a e7 41 24 3d 22 59 22 8c 8d 64 66 |.ask:.A$="Y"..df| 00000640 45 0d 05 d2 60 f1 27 22 4e 65 77 20 6e 75 6d 62 |E...`.'"New numb| 00000650 65 72 20 6f 66 20 63 6f 6c 75 6d 6e 73 20 28 20 |er of columns ( | 00000660 3c 22 3b 4c 25 2b 31 22 20 29 22 3b 3a e8 2c 49 |<";L%+1" )";:.,I| 00000670 25 3a e7 49 25 3c 31 20 84 20 49 25 3e 4c 25 20 |%:.I%<1 . I%>L% | 00000680 f1 22 20 49 6c 6c 65 67 61 6c 20 76 61 6c 75 65 |." Illegal value| 00000690 22 3a e5 8d 64 52 45 20 8b 20 58 25 3d 49 25 2d |":..dRE . X%=I%-| 000006a0 31 0d 05 dc 5c f1 22 4e 65 77 20 6e 75 6d 62 65 |1...\."New numbe| 000006b0 72 20 6f 66 20 72 6f 77 73 20 28 20 3c 22 3b 4c |r of rows ( <";L| 000006c0 25 2b 31 22 20 29 22 3b 3a e8 2c 49 25 3a e7 49 |%+1" )";:.,I%:.I| 000006d0 25 3c 31 20 84 20 49 25 3e 4c 25 20 f1 22 20 49 |%<1 . I%>L% ." I| 000006e0 6c 6c 65 67 61 6c 20 76 61 6c 75 65 22 3a e5 8d |llegal value":..| 000006f0 64 52 45 20 8b 20 59 25 3d 49 25 2d 31 0d 05 e6 |dRE . Y%=I%-1...| 00000700 15 44 58 3d 57 2f 58 25 3a 44 59 3d 48 2f 59 25 |.DX=W/X%:DY=H/Y%| 00000710 3a e1 0d 05 f0 05 3a 0d 05 fa 09 dd f2 61 73 6b |:.....:......ask| 00000720 0d 06 04 0d 2a 46 58 32 30 32 2c 34 30 0d 06 0e |....*FX202,40...| 00000730 1e f1 3b 22 20 49 73 20 74 68 69 73 20 4f 4b 20 |..;" Is this OK | 00000740 28 59 2f 4e 29 22 3b f2 51 3a e1 0d 06 18 0e dd |(Y/N)";.Q:......| 00000750 f2 51 3a f1 3b 22 3f 22 3b 0d 06 22 28 41 24 3d |.Q:.;"?";.."(A$=| 00000760 bd 28 a5 20 80 20 32 32 33 29 3a e7 41 24 3c 3e |.(. . 223):.A$<>| 00000770 22 59 22 80 20 41 24 3c 3e 22 4e 22 e5 8d 54 62 |"Y". A$<>"N"..Tb| 00000780 46 0d 06 2c 0a f1 3b 41 24 3a e1 0d 06 36 05 3a |F..,..;A$:...6.:| 00000790 0d 06 40 0a dd f2 6d 6f 64 65 0d 06 4a 0f 54 25 |..@...mode..J.T%| 000007a0 3d 2d 31 3a 40 25 3d 31 30 0d 06 54 27 db 3a f1 |=-1:@%=10..T'.:.| 000007b0 8a 37 2c 31 29 bd 31 33 34 22 54 68 65 20 4d 61 |.7,1).134"The Ma| 000007c0 6e 64 65 6c 62 72 6f 74 20 53 65 74 22 27 27 27 |ndelbrot Set"'''| 000007d0 0d 06 5e aa f1 22 54 68 65 72 65 20 61 72 65 20 |..^.."There are | 000007e0 74 77 6f 20 61 76 61 69 6c 61 62 6c 65 20 70 6c |two available pl| 000007f0 6f 74 20 6d 6f 64 65 73 3a 22 27 27 22 31 29 22 |ot modes:"''"1)"| 00000800 2b bd 31 33 31 2b 22 48 69 67 68 20 72 65 73 6f |+.131+"High reso| 00000810 6c 75 74 69 6f 6e 20 28 32 35 36 20 6c 69 6e 65 |lution (256 line| 00000820 73 29 20 61 6e 64 22 27 22 66 6f 75 72 20 63 6f |s) and"'"four co| 00000830 6c 6f 75 72 73 2c 22 27 27 22 32 29 20 4c 6f 77 |lours,"''"2) Low| 00000840 20 72 65 73 6f 6c 75 74 69 6f 6e 20 28 31 32 38 | resolution (128| 00000850 20 6c 69 6e 65 73 29 20 61 6e 64 22 27 bd 31 33 | lines) and"'.13| 00000860 31 2b 22 65 69 67 68 74 22 2b bd 31 33 35 2b 22 |1+"eight"+.135+"| 00000870 63 6f 6c 6f 75 72 73 2e 22 27 0d 06 68 44 e7 4d |colours."'..hD.M| 00000880 25 3d 30 20 f1 27 22 57 68 69 63 68 20 6d 6f 64 |%=0 .'"Which mod| 00000890 65 20 77 6f 75 6c 64 20 79 6f 75 20 6c 69 6b 65 |e would you like| 000008a0 20 28 31 20 6f 72 20 32 29 3f 20 22 3b 3a 4d 25 | (1 or 2)? ";:M%| 000008b0 3d a5 2d 34 38 20 8b 20 e5 20 8d 44 7c 46 0d ff |=.-48 . . .D|F..| 000008c0