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CRT.PAS
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Pascal/Delphi Source File
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1997-04-15
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3KB
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139 lines
{*******************************************************}
{ }
{ Turbo Pascal Runtime Library }
{ CRT Interface Unit }
{ }
{ Copyright (C) 1988,92 Borland International }
{ }
{*******************************************************}
unit Crt;
{$I-,S-}
interface
const
{ CRT modes }
BW40 = 0; { 40x25 B/W on Color Adapter }
CO40 = 1; { 40x25 Color on Color Adapter }
BW80 = 2; { 80x25 B/W on Color Adapter }
CO80 = 3; { 80x25 Color on Color Adapter }
Mono = 7; { 80x25 on Monochrome Adapter }
Font8x8 = 256; { Add-in for ROM font }
{ Mode constants for 3.0 compatibility }
C40 = CO40;
C80 = CO80;
{ Foreground and background color constants }
Black = 0;
Blue = 1;
Green = 2;
Cyan = 3;
Red = 4;
Magenta = 5;
Brown = 6;
LightGray = 7;
{ Foreground color constants }
DarkGray = 8;
LightBlue = 9;
LightGreen = 10;
LightCyan = 11;
LightRed = 12;
LightMagenta = 13;
Yellow = 14;
White = 15;
{ Add-in for blinking }
Blink = 128;
var
{ Interface variables }
DelayCNT:longint;
CheckBreak: Boolean; { Enable Ctrl-Break }
CheckEOF: Boolean; { Enable Ctrl-Z }
DirectVideo: Boolean; { Enable direct video addressing }
CheckSnow: Boolean; { Enable snow filtering }
LastMode: Word; { Current text mode }
TextAttr: Byte; { Current text attribute }
WindMin: Word; { Window upper left coordinates }
WindMax: Word; { Window lower right coordinates }
{ Interface procedures }
procedure AssignCrt(var F: Text);
function KeyPressed: Boolean;
function ReadKey: Char;
procedure TextMode(Mode: Integer);
procedure Window(X1,Y1,X2,Y2: Byte);
procedure GotoXY(X,Y: Byte);
function WhereX: Byte;
function WhereY: Byte;
procedure ClrScr;
procedure ClrEol;
procedure InsLine;
procedure DelLine;
procedure TextColor(Color: Byte);
procedure TextBackground(Color: Byte);
procedure LowVideo;
procedure HighVideo;
procedure NormVideo;
procedure Delay(MS: Word);
procedure Sound(Hz: Word);
procedure NoSound;
implementation
{$IFDEF DPMI}
{$L CRT.OBP}
{$ELSE}
{$L CRT.OBJ}
{$ENDIF}
procedure Initialize; external;
procedure AssignCrt; external;
function KeyPressed; external;
function ReadKey; external;
procedure TextMode; external;
procedure Window; external;
procedure GotoXY; external;
function WhereX; external;
function WhereY; external;
procedure ClrScr; external;
procedure ClrEol; external;
procedure InsLine; external;
procedure DelLine; external;
procedure TextColor; external;
procedure TextBackground; external;
procedure LowVideo; external;
procedure HighVideo; external;
procedure NormVideo; external;
procedure Delay; external;
procedure Sound; external;
procedure NoSound; external;
procedure Break;
begin
Halt(255);
end;
begin
Initialize;
AssignCrt(Input); Reset(Input);
AssignCrt(Output); Rewrite(Output);
end.