Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!elroy.jpl.nasa.gov!sdd.hp.com!caen!uwm.edu!rpi!uupsi!cci632!ritcsh!derrick
From: derrick@ritcsh.csh.rit.edu (Derrick Williams)
Newsgroups: comp.sys.ibm.pc.hardware
Subject: XT graphics card
Keywords: Hardware hack
Message-ID: <1991Feb18.024439.18713@ritcsh.csh.rit.edu>
Date: 18 Feb 91 02:44:39 GMT
Organization: Computer Science House @ RIT, Rochester, NY.
Lines: 18


 I am working on a z80 breadboard, and I would like to implement a video
display for it. I dug up an old IBM PC mono monitor, the ones the original
IBM PC's came with.
 As the 8088 and Z80's are similar, I would like to use a graphics card
to use the monitor.
 However, I do not understand the relationship between the cpu and the
graphics card, which does what, what the graphics card is capable of, 
and so on. I hear that I can get a monochrome card pretty cheaply for an
XT bus. I would be grateful to receive the pinouts of the XT bus, and
technical information on how to control a graphics card. 
 I have never owned an IBM PC or gotten intiminate with them, so I'm
afraid I may appear ignorant in some respects. I would be happy if that
is corrected :-).

                                                       Much thanks,

                                                        Derrick