• SVS FORTRAN-77: mandelbrot demo

    From Martin@21:1/5 to All on Tue Mar 15 19:39:35 2022
    Ported from the CB68 CBASIC Compiler Demo


    $ ./cpmsim.sh
    Read 32768 bytes from boot track


    CP/M-68K(tm) Version 1.2 03/20/84
    Copyright (c) 1984 Digital Research, Inc.

    CP/M-68K BIOS Version 1.0
    Simulated system of April 2014
    TPA =16251 K

    AUTOST.SUB

    INIT.REL M
    Do you really want to init disk M ?
    a:

    type mandel.for
    PROGRAM MANDEL
    REAL CA, CB, A, B, T
    INTEGER X, Y, I, K
    CHARACTER CH*1
    CHARACTER*80 OUT

    DO 300, Y=-12,12
    DO 200, X=-39,39
    CA=X*0.0458
    CB=Y*0.08333
    A=CA
    B=CB
    K=99
    DO 100, I=0,15
    IF (K .NE. 99) GOTO 100
    T=A*A-B*B+CA
    B=2.0*A*B+CB
    A=T
    IF ((A*A+B*B) .GT. 4.0) K=I
    100 CONTINUE
    IF (K .GT. 9) K=K+7
    IF (K .GT. 99) OUT(X+40:X+40)=' '
    IF (K .LT. 99) OUT(X+40:X+40)=CHAR(48+K)
    200 CONTINUE
    9000 FORMAT(1X,79A)
    WRITE(*,9000) OUT
    300 CONTINUE
    END

    b:f mandel

    B:FORTRAN.REL MANDEL.FOR
    MC68000 Fortran77 Compiler V2.1 01-Dec-83
    (C) Copyright 1983 Silicon Valley Software, Inc.

    MANDEL [16521650 bytes]
    {16520150 bytes}


    0 errors. 28 lines. File mandel.for
    Smallest available space: 16521650 bytes.

    B:CODE.REL MANDEL.I
    MC68000 Code Generator V2.1 01-Dec-83
    (C) Copyright 1983 Silicon Valley Software, Inc.

    MANDEL - MANDEL Code size = 386
    Total code size = 386

    B:ULINKER.REL -L MANDEL.O MANDEL.OBJ B:FTNLIB.OBJ B:PASLIB.OBJ
    MC68000 CPM Object Code Formatter V2.1 01-Dec-83
    (C) Copyright 1983 Silicon Valley Software, Inc.


    ERA MANDEL.OBJ

    C:LO68 -S -O MANDEL.68K -T10100 B:S.O MANDEL.O B:OPTOFF.O B:CLIB

    ERA MANDEL.O

    mandel
    000000011111111111111111122222233347E7AB322222111100000000000000000000000000000
    000001111111111111111122222222333557BF75433222211111000000000000000000000000000
    000111111111111111112222222233445C 643332222111110000000000000000000000000
    011111111111111111222222233444556C 654433332211111100000000000000000000000
    11111111111111112222233346 D978 BCF DF9 6556F4221111110000000000000000000000
    111111111111122223333334469 D 6322111111000000000000000000000
    1111111111222333333334457DB 85332111111100000000000000000000
    11111122234B744444455556A 96532211111110000000000000000000
    122222233347BAA7AB776679 A32211111110000000000000000000
    2222233334567 9A A532221111111000000000000000000
    222333346679 9432221111111000000000000000000
    234445568 F B5432221111111000000000000000000
    864332221111111000000000000000000
    234445568 F B5432221111111000000000000000000
    222333346679 9432221111111000000000000000000
    2222233334567 9A A532221111111000000000000000000
    122222233347BAA7AB776679 A32211111110000000000000000000
    11111122234B744444455556A 96532211111110000000000000000000
    1111111111222333333334457DB 85332111111100000000000000000000
    111111111111122223333334469 D 6322111111000000000000000000000
    11111111111111112222233346 D978 BCF DF9 6556F4221111110000000000000000000000
    011111111111111111222222233444556C 654433332211111100000000000000000000000
    000111111111111111112222222233445C 643332222111110000000000000000000000000
    000001111111111111111122222222333557BF75433222211111000000000000000000000000000
    000000011111111111111111122222233347E7AB322222111100000000000000000000000000000

    c:bbye
    CP/M-68K terminating normally

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