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- Newsgroups: comp.sys.ibm.pc.hardware
- Path: sparky!uunet!gatech!destroyer!sol.ctr.columbia.edu!zaphod.mps.ohio-state.edu!mips!mips!munnari.oz.au!uniwa!gude
- From: gude@uniwa.uwa.edu.au (David J W Emrich)
- Subject: Re: 2 monitors on a 486 - How?
- Message-ID: <1992Jul27.145509.15121@uniwa.uwa.edu.au>
- Organization: University of Western Australia
- References: <1992Jul27.000511.17215@dmp.csiro.au>
- Date: Mon, 27 Jul 1992 14:55:09 GMT
- Lines: 52
-
- annef@dmp.csiro.au (Anne Foxworthy) writes:
-
- >Could someone tell me how to connect a second monitor to a 486 PC.
-
- >I will be debugging Windows programs, and want to add a second monitor
- >to make debugging easier. I have copius notes on how to use one that
- >is already connected, but I can't find anywhere how to connect one, or
- >whether there are limitations on what sort of monitor I can connect.
-
- >Thanks in advance for any and all help.
-
- >Anne.
- >
-
- I assume you are using a VGA as the current monitor/card setup. In
- simple terms the limitations are as follows. (By simple terms,I mean
- that this is the way IBM PC's were designed to work, given standard
- cards, etc. etc.)
-
- Two monitors/cards can be connected to a PC if one of them is run in
- monochrome mode, and the other in color. This is really synonymous with
- running one in text mode, and the other in text/graphics mode. The most
- usual configuration is to have a 'primary' monochrome (say CGA, EGA or
- HercMono), and a 'secondary' color card, say VGA. THe primary card is
- the one that the PC boots up on (i.e. startup diagnostics, ram count
- etc. come up on the primary monitor). The secondary one is not used
- until someone (program) specifically requires it. You would then have
- the PC boot on the mono card/monitor, and windows woul run on the
- secondary card/monitor. The PC supports this as is, you just set the
- BIOS up to use the primary card, and dos/BIOS/windows figures out the
- secondary card all by themselves.
-
- If you are not happy with mono cards, there is a not-so-simple solution,
- but there are problems, (cost!).
- This solution, that allows dual color screens, is one that involves
- the high end graphics cards, say, the Artist Card (U.S. product), the
- Rasterex Card (Norwegian?), or similar (Moncrieff here in Australia sells
- a card based on the TI chip set). The only problem here is that these
- cards are high end graphics cards, and they cost lots (order of $2000
- for the Artist and Rasterex Cards). If you are going to consider these
- types of cards, post me again (or email me if you like) and I can get
- more info.
-
- If you need any more info, post or email me again with specific
- questions.
-
- Good Luck!
-
- [dav] aka
- David Emrich
- gude@uniwa.uwa.edu.au
-
-