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CD ROM Paradise Collection 4
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CD ROM Paradise Collection 4 1995 Nov.iso
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0067_Mode 13 Demo.pas
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Pascal/Delphi Source File
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1994-01-27
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1KB
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44 lines
PROGRAM Mode13Demo; { Oct 10/93, Greg Estabrooks. }
VAR
CurCol,
OldMode:BYTE;
CurPos,
X,Y :WORD;
ScrBuff :ARRAY[1..64000] OF BYTE;
PROCEDURE SetVidMode( Mode :BYTE ); ASSEMBLER;
{ Routine to set video mode }
ASM
Mov AH,00 { Function to set mode }
Mov AL,Mode { Mode to change to }
Int $10 { Call dos }
END;{SetVidMode}
PROCEDURE PutPixel( X,Y :WORD; Color :BYTE );
BEGIN
Mem[$A000:(320*Y)+X]:= Color;
END;
BEGIN
SetVidMode($13); { Set Mode to 320x200x256. }
FOR Y := 0 To 199 DO { Loop through all lines. }
FOR X := 0 To 319 DO { Loop through all columns. }
PutPixel(X,Y,Random(255));
CurCol := 0;
CurPos := 0;
FOR Y := 0 To 199 DO { Loop through all lines. }
BEGIN
Inc(CurCol);
FOR X := 0 To 319 DO { Loop through all columns. }
BEGIN
Inc(CurPos);
ScrBuff[CurPos] := CurCol;
END;
END;
Writeln('Press Enter to see the Faster way!');
Readln;
Move(ScrBuff,Mem[$A000:0],SizeOf(ScrBuff));
Readln;
SetVidMode(3); { Set Mode 3,80x25. }
END.