Path: utzoo!utgpu!water!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!mailrus!ames!necntc!dandelion!ulowell!bu-tyng!draper
From: draper@bu-tyng.bu.edu (Dave Draper)
Newsgroups: comp.sys.ibm.pc
Subject: Screen Border Color using EGA card ??????
Message-ID: <1697@bu-tyng.bu.edu>
Date: 29 Aug 88 18:16:12 GMT
Reply-To: draper@bu-tyng.UUCP (dday)
Organization: Boston University Corporate Education Center, Tyngsboro, MA
Lines: 74


	I am having problems setting the screen border color
	on my pc clone. I am using a Paradise Autoswitch 
	EGA 480 display adapter. I used the following debug
	script.

        -------------

	a 100
	mov al,01  	; second number controls the color
	mov dx,03d9
	out dx,al
	nop

	r cx
	31
	n border.com
	w
	q

	-------------	

	The code only works if the card is in CGA
	mode. It DOES NOT work in EGA mode.

	I then tried the following C code.

	--------------

	#include "dos.h"
	#define SETPAL 0x0b	/*"set color palette" service*/
	#define VIDEO 0x10	/*video BIOS interrupt number*/

	main (argc,argv)
	int argc;
	char *argv[];
	{
		union REGS regs;
		int pal;
		
		if (argc != 2) {
			printf("Usage error.");
			exit ();
		}
		pal = atoi(argv[1]);
		regs.h.bh = 0;		/*set BH =0*/
		regs.h.bl = pal;	/*color of background - from user*/
		regs.h.al = SETPAL;	/*service # in AH register*/
		int86(VIDEO, &regs, &regs); 	/*call video interrupt*/
	}

	--------------

	This code worked if the card was in either EGA/CGA graphics mode
	and if the card was in CGA text mode however it did not work in
	EGA text mode.

	Does anybody know how to set the border color in EGA text modes?
	Any help/suggestions would be greatly appreciated.

	Thanks ahead of time.

	Dave Draper

       Reality is for people who can't deal with soc.singles!

            Don't DUKE it out in '88  ...  Lick BUSH !!!

  Dave Draper                           
  UUCP: decvax!elrond!bu-tyng!draper
  Boston University Corporate Education Center
  72 Tyng Road                      
  Tyngsboro   MA  01879                
  649-9731 x14