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From: mason@tc.fluke.COM (Nick Mason)
Newsgroups: comp.sys.ibm.pc
Subject: Re: How do you get both EGA and Mono monitors in one system?
Message-ID: <1248@sputnik.COM>
Date: Fri, 10-Jul-87 18:12:55 EDT
Article-I.D.: sputnik.1248
Posted: Fri Jul 10 18:12:55 1987
Date-Received: Sun, 12-Jul-87 12:17:52 EDT
References: <273@octopus.UUCP>
Sender: news@tc.fluke.COM
Distribution: world
Organization: John Fluke Mfg. Co., Inc., Everett, WA
Lines: 36

In article <273@octopus.UUCP> pete@octopus.UUCP (Pete Holzmann) writes:

I have both a mono and an EGA hooked up to my AT and they work fine.
>
>Doesn't the EGA board map into the same memory space as the Mono board (since
>EGA also simulates mono and CGA text)? Does this cause a problem or not?

The mono maps into segment B000 and has 4K of memory, the EGA into segment
B800 and has upto 256K of memory, so they don't (shouldn't conflict).
>
>Should I just expect the weirdness and go ahead with hooking up a monitor to
>the mono board? I'd prefer the EGA to be 'primary' if possible!

NO.
>
>Any advice from someone who has successfully hooked up both would be truly
>appreciated!

One question, do you have an IBM EGA and IBM mono card or a 
compatible??.  Some compatibles do map into the mono cards space.

Also, the switch settings on the IBM EGA card my have to be changed
to allow for the addition of the mono card.


Nick Mason.


   mason@tc.fluke.COM
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