CGA vs EGA

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Article #7705

#7705

From: Dan Ts'o
Date: Thu, 21 Aug 1986 21:03

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	A question about the ROM BIOS call "set palette", request AH <- 11
of the Video interrupt 0x10. 
	I am trying to write a simple display program that will work on both
the CGA and EGA. I am using mode 6 (640x200, 2 color) for this reason.
It seems that setting the background color on the CGA actually sets the
foreground (pixel on) color, while using "set palette" to set the background
in fact does set the background.
	Is this CGA "feature" suppose to be there ?

					Cheers,
					Dan Ts'o
					Dept. Neurobiology
					Rockefeller Univ.
					1230 York Ave.
					NY, NY 10021
					212-570-7671
					...cmcl2!rna!dan
					rna!dan@cmcl2.arpa

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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: arc1-ca.pugleaf.net!utzoo!mnetor!seismo!husc6!yale!cmcl2!rna!dan
From: dan@rna.UUCP (Dan Ts'o)
Newsgroups: net.micro.pc
Subject: CGA vs EGA
Message-ID: <531@rna.UUCP>
Date: Thu, 21-Aug-86 17:03:48 EDT
Article-I.D.: rna.531
Posted: Thu Aug 21 17:03:48 1986
Date-Received: Thu, 21-Aug-86 22:25:36 EDT
Organization: Rockefeller Neurobiology
Lines: 19