Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cornell!uw-beaver!tektronix!percival!parsely!casper!dalew
From: dalew@casper.UUCP (Dale Weber)
Newsgroups: comp.sys.ibm.pc
Subject: Two Video Cards ??
Message-ID: <385.24529C2F@casper.UUCP>
Date: 24 Apr 89 01:46:59 GMT
Organization: Casper's Place, Portland OR USA
Lines: 24

In an article of <20 Apr 89 21:14:42 GMT>, pjh@mccc.UUCP (Pete Holsberg) writes:

 ->A friend would like to be able to run CGA graphics programs on his 
 ->monochrome PC by adding a CGA board to the system.  Is it possible to do  
 ->this?  Can a monochrome monitor handle both monochrome and RGB signals?   

   Yes, you can a lot of the software, including many games that require CGA  
if you use an emulator like HGCIBM. This is the one I use when I need to  
emulate CGA on my Hercules compatible display system.

 ->If he needs a CGA monitor, how is the switching between mono and CGA
 ->implemented?

   It's not done in hardware unless you have a special EGA or VGA adapter  
that allows emulation of CGA on a monochrome monitor. I will just stick to  
using HGCIBM until I can afford to step up to VGA color. The software  
emulation works very well in most cases, if a bit slow at times.



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