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graphics.def
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1992-05-01
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(* Graphics BIOS Graphics 1991 Chris Harshman
This Module was designed to give CGA and EGA graphics commands to
Fitted Software Tools Modula-2 compiler. Included are Procedures to
set video mode, draw a dot, box, or circle, and a function to return
the color of a point on the screen *)
DEFINITION MODULE Graphics;
PROCEDURE SetCga320;
(* Sets screen mode to 320x200 4 color graphics *)
PROCEDURE SetCgaMono;
(* Sets screen mode to 640x200 2 color graphics *)
PROCEDURE SetEga320;
(* Sets screen mode to 320x200 16 color graphics *)
PROCEDURE SetEga640;
(* Sets screen mode to 640x200 16 color graphics *)
PROCEDURE SetPlus;
(* Sets screen mode to 640x350 16 color graphics on EGA boards or
to 640x200 16 color graphics on Leading Edge computers *)
(* color can be in the range 0-3 for CGA and 0-15 for EGA. Coordinates
are from 0 to the specified range -1 *)
PROCEDURE SetTandy;
(* Sets screen mode to 320x200 16 color graphics on Tandy or PCjr *)
PROCEDURE SetBackground(color:INTEGER);
(* Sets the background color for graphics screens. Can also be used to
change the border on text screens. *)
PROCEDURE Dot(color,xloc,yloc:INTEGER);
(* Puts a dot of color on the screen at the specified x,y coordinates *)
PROCEDURE Box(color,x1,y1,x2,y2:INTEGER);
(* Frame a box of color from coord x1,y1 to x2,y2 *)
PROCEDURE Circle(color,xloc,yloc,rad:INTEGER);
(* Draws an elipse with center xloc,yloc of color with radius rad *)
PROCEDURE Look(xloc,yloc:INTEGER):INTEGER;
(* Returns the color of the given coordinates *)
PROCEDURE Clear;
(* Clears the screen, slower than Cls FROM Text *)
END Graphics.