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Path: utzoo!linus!decvax!harpo!floyd!whuxlb!pyuxll!eisx!npoiv!npois!hogpc!houxm!ihnp4!cbosgd!mddc!jordan
From: jordan@mddc.UUCP
Newsgroups: net.micro.pc
Subject: Color Card BUG + modem info
Message-ID: <201@mddc.UUCP>
Date: Thu, 21-Jul-83 09:18:12 EDT
Article-I.D.: mddc.201
Posted: Thu Jul 21 09:18:12 1983
Date-Received: Sun, 24-Jul-83 20:16:42 EDT
Organization: MDDC, Cincinnati, Ohio
Lines: 33

I think I found a bug in IBM hardware and was wondering if anyone out there
knows the solution....

	I wrote a graphics package in C and tested it out by writing a
simple polyspi (squiral) drawing algorithm.  It went through the first
few iterations nicely, but then the screen just scambled in went into
snowy mode.
	Thinking that was weird, I took my disk to a local IBM User's group
meeting that night.  The only computer to run it on was a Compaq, so I did
and the program worked perfectly.  Thinking the problem was in my machine,
I tried the program out later on a friends machine, and it mutiliated the
screen just like it did to mine.
	Common sense tells me that if it works on a Compaq, it should have
worked on the PC, leading me to believe that there is a bug in the PC
hardware or firmware itself (I'm using BIOS call 0x10 for Video I/O)

	Anyone have any suggestions?

	Also, I was considering purchasing a US Robotics Password modem.
Has anyone used one and have info on how well it's made and how Hayes
compatible it is?  Thanks in advance.


_____________________________________________________________


			Jordan Bortz

		UUCP	:  ..decvax!cbosgd!mddc!jordan
		ARPA	:  ..cbosgd!mddc!jordan@berkeley.ARPA
		FLAMES	:  /dev/null on your local system