sw/src/life/head.pa

   1 / CONWAY'S GAME OF LIFE - BREED LIFE ON YOUR PDP8!
   2
   3 /********************************************************************
   4 /********************************************************************
   5 /
   6 / PAL-8 IMPLEMENTATION OF CONWAY'S GAME OF LIFE
   7 /
   8 / PHILIPP HACHTMANN, JULY 2010
   9 /
  10 / REVISIONS:
  11 /
  12 /            2010-07-24 - INITIAL RELEASE
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  14
  15
  16 /********************************************************************
  17 /********************************************************************
  18 / DISPLAY API FOR PLUGGABLE DISPLAY DRIVERS
  19 /
  20 / THE DRIVER MUST KEEP TRACK OF CURSOR POSITIONS AND DECIDE
  21 / HOW TO REALIZE THE DESIRED FUNCTIONALITY.
  22
  23 / THE DRIVER USES THE FOLLOWING CALL TO SEND A BYTE DOWN THE LINE:
  24 /
  25 /       JMS I   XTTOUT  WITH DATA IN AC
  26 / ... AND NOTHING ELSE!
  27 /
  28 / THE DRIVER IS OBLIGED TO SAVE AC AND LINK ON EVERY CALL.
  29
  30 /*************************************************
  31 / DSSET - SET THE CURSOR TO A SPECIFIED POSITION
  32 /
  33 /       JMS     DSSET
  34 /       <COLUMN>
  35 /       <ROW>
  36 /       ERROR RETURN
  37 /       NORMAL RETURN
  38
  39 /*************************************************
  40 / DSCLS - CLEAR SCREEN
  41 /
  42 /       JMS     DSCLS
  43 /       ERROR RETURN
  44 /       NORMAL RETURN
  45
  46 /*************************************************
  47 / DSEOL - CLEAR FROM CURSOR POSITION TO END OF LINE
  48 /
  49 / THE CURRENT CURSOR POSITION REMAINS UNCHANGED.
  50 /
  51 /       JMS     DSCLS
  52 /       ERROR RETURN
  53 /       NORMAL RETURN
  54
  55 /*************************************************
  56 / DSEOS - CLEAR FROM CURSOR POSITION TO END OF SCREEN
  57 /
  58 / THE CURRENT CURSOR POSITION REMAINS UNCHANGED.
  59 /
  60 /       JMS     DSCLS
  61 /       ERROR RETURN
  62 /       NORMAL RETURN
  63
  64 /*************************************************
  65 / DSOUT - SEND A CHARACTER TO THE SCREEN
  66 /
  67 / ONLY PRINTABLE CHARACTERS AND CR/LF ARE ALLOWED!
  68 /
  69 /       JMS     DSOUT   WITH ARGUMENT IN AC
  70 /       ERROR RETURN
  71 /       NORMAL RETURN
  72
  73
  74 /*************************************************
  75 / DSBEL - MAKE SOME NOISE
  76 /
  77 /       JMS     DSBEL
  78 /       ERROR RETURN
  79 /       NORMAL RETURN
  80
  81 /*************************************************
  82