Thread View: comp.windows.ms.programmer
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Started by robert eric beckwith
Tue, 14 Apr 1992 20:55
2 monitors w/BC++3.0 ?'s
Author: robert eric beckwith
Date: Tue, 14 Apr 1992 20:55
Date: Tue, 14 Apr 1992 20:55
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I have a model IBM mdl 80 and am going to get either the xga or 8514/a card and the question is: --------------------------------------------------------- Using BC++ can I use the on board video driver vga to drive a debugging monitor and use the xga for display of the program?? (I want to know if this will work before purchasing the video card and another monitor) or any suggestions??? ---------------------------------------------------------- Also, I have just ordered win3.1 upgrade, and can see I am looking forward to some problems making BC++ work. what all am I going to need to change?? (does anyone know) And when will an update be out to BC++ 3.0 ? (just got mine this year, and am not looking forward to upgrade $$, but I't looks like I'll need it) ----------------------------------------------------------- thanks in advance.....robert
Re: 2 monitors w/BC++3.0 ?'s
Author: Peter Haller
Date: Wed, 15 Apr 1992 05:03
Date: Wed, 15 Apr 1992 05:03
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In a previous article, IO20081@MAINE.MAINE.EDU (robert eric beckwith) says: >--------------------------------------------------------- >Using BC++ can I use the on board video driver vga >to drive a debugging monitor and use the xga for >display of the program?? (I want to know if this will >work before purchasing the video card and another monitor) >or any suggestions??? >---------------------------------------------------------- If the built in VGA uses 0xC0000-0xC7FFF in the first 640K you can't. (It most likely does.) The normal second monitor is a monichrome (MDA). This is because a mono graphics card uses memory from 0xB0000-0xBFFFF (I think). When your VGA card boots it recognizes that there is a secondardy display and since the adresses don't conflict, everything is fine. If you try to use a card that needs the same area of memory as the built in VGA, you have a probelm. Only one display can be used - period - that uses this address range. (I'm not up on XGA or a 'real' 8514/a adaptor. Maybe these can be set to map elsewhere or your on board VGA can, but this is unlikely.) PCH -- Peter C. Haller | 'If you do what you Imagination Processing Systems | have always done, aa596@cleveland.Freenet.Edu | expect what you have "Are we having fun yet?" | always recieved.'
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