Xref: utzoo comp.sys.ibm.pc.misc:2893 comp.sys.ibm.pc.hardware:2451
Path: utzoo!attcan!uunet!cs.utexas.edu!usc!elroy.jpl.nasa.gov!thyme!kaleb
From: kaleb@thyme.jpl.nasa.gov (Kaleb Keithley	)
Newsgroups: comp.sys.ibm.pc.misc,comp.sys.ibm.pc.hardware
Subject: Re: In VGA hell... help?
Message-ID: <1990Oct23.000114.2940@thyme.jpl.nasa.gov>
Date: 23 Oct 90 00:01:14 GMT
References: <35108@cup.portal.com> <23oeR4w163w@mudos.ann-arbor.mi.us> <1990Oct22.215027.12207@sj.ate.slb.com>
Organization: Jet Propulsion Laboratory, Pasadena, CA
Lines: 39

In article <1990Oct22.215027.12207@sj.ate.slb.com> poffen@sj.ate.slb.com (Russ Poffenberger) writes:
>In article <23oeR4w163w@mudos.ann-arbor.mi.us> mju@mudos.ann-arbor.mi.us (Marc Unangst) writes:
>>Justin_Randall_Padawer@cup.portal.com writes:
>>> vgaplus.exe program to switch modes etc.  No dipswitch on the 286 board,
>>> just a jumper to select mono or color; I have the jumper set to color
>>> ...should I try mono???
>>
>>Um, it's a wild guess, but I'd say that if you're using a monochrome
>>monitor, you should probably have the system set to mono.
>>
>>Also, note that you probably won't be able to use the color VGA modes
>>with your mono monitor.
>>
>Well this is pretty bad advice. A mono VGA system is no different from a color
>VGA system except that all you can get is grayscale. That is, colors are
>displayed in different intensities of gray.
>
>You should be able to set it up as a VGA system and have it work. That means
>selecting the color dipswitch setting.
>
>Of course, perhaps your system doesn't support VGA?
>

Well, mono VGA is slightly different from color VGA.  Yes, you get gray-
scales, but only sixteen, not 256 because the monitor works only on the
green line.  My Paradise card auto-detects whether the monitor is color
or mono, I believe by putting a signal out on each line, and checking to
see if it gets a signal on the corresponding ground, and configures 
accordingly.  Windows 3.0 has a special vga-mono driver, and none of 
Paradise's extended VGA Windows drivers work because they are all for 
color.  My motherboard CMOS BIOS setup has a VGA setting which I use.  
Really old XTs had two dip switches, if I recall, with a setting for 
none, mono, and color; none being the appropriate setting for a VGA.

-- 
Kaleb Keithley                      Jet Propulsion Labs
kaleb@thyme.jpl.nasa.gov

causing trouble again.