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FLAME
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FLAME1.PAS
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Pascal/Delphi Source File
|
1996-08-21
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3KB
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61 lines
{*******************************************************}
{ }
{ Copyright (C) 1996 T M T Corporation }
{ }
{*******************************************************}
{ this exaple demonstrate direct access to video memory }
{ and I/O port }
{ this program has been posted to COMP.LANG.PASCAL newsgroup.}
{ Here is unchanged original version with author comments. }
{ This program can't works under DOS32 extender }
{ DOS version: Use Turbo Pascal 6.0+ to compile }
var c, x, y, z : Word;
procedure setrgb( c, r, g, b : byte );
begin
port[$3c8] := c; { g'day, this is a probably the most simple version }
port[$3c9] := r; { of fire that you will ever see in pascal. i wrote }
port[$3c9] := g; { the code in pascal so it's slow and choppy, i have }
port[$3c9] := b; { another version in asm. and it's faster. anyways if }
end; { you have any critics or question on this code, just }
{ e-mail me at ekd0840@bosoleil.ci.umoncton.ca. or }
begin { 9323767@info.umoncton.ca }
randomize; { note : I have code for all kinds of stuff (that I }
asm mov ax, 13h { wrote of course), if you want something }
int 10h { e-mail me (i never get mail), maybe i have }
end; { what you want. }
for x := 1 to 32 do{ keith degrüce }
begin { moncton, n.-b. canada }
setrgb(x, x*2-1, 0, 0 );
setrgb(x+32, 63, x*2-1, 0 );
setrgb(x+64, 63, 63, x*2-1);
setrgb(x+96, 63, 63, 63 );
end;
repeat
x := 0;
repeat
y := 60;
repeat
c := (mem[$a000:y * 320 + x]+
mem[$a000:y * 320 + x + 2]+
mem[$a000:y * 320 + x - 2]+
mem[$a000:(y+2) * 320 + x + 2]) div 4;
if c <> 0 then dec(c);
memw[$a000:(y-2) * 320 + x] := (c shl 8) + c;
memw[$a000:(y-1) * 320 + x] := (c shl 8) + c;
Inc(Y,2);
until y > 202;
Dec(y,2);
mem[$a000:y * 320 + x] := random(2) * 160;
Inc(X,2);
until x >= 320;
until port[$60] < $80;
asm mov ax, 3
int 10h
end;
end.