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From: allbery@ncoast.UUCP (Brandon Allbery)
Newsgroups: comp.sys.ibm.pc
Subject: Re: SETCGA, SIMCGA info?
Message-ID: <2801@ncoast.UUCP>
Date: Sun, 5-Jul-87 18:59:23 EDT
Article-I.D.: ncoast.2801
Posted: Sun Jul  5 18:59:23 1987
Date-Received: Tue, 7-Jul-87 00:43:24 EDT
References: <2490007@hpsadla.HP> <1685@kontron.UUCP>
Reply-To: allbery@ncoast.UUCP (Brandon Allbery)
Followup-To: comp.sys.ibm.pc
Organization: Cleveland Public Access UN*X, Cleveland, Oh
Lines: 31

As quoted from <1685@kontron.UUCP> by cramer@kontron.UUCP (Clayton Cramer):
+---------------
| > An guy just stopped by and asked me about some graphics utilities for the 
| > use of a monochrome monitor connected to a CGA card.  The names are 
| > SETCGA and SIMCGA.  Anyone heard of them?  Are they Public Domain or not?
| 
| Just a reminder: the TTL monochrome monitors (like the IBM Monochrome
| Display) are electrically incompatible with the CGA card.  (Smoke and
| everything apparently results).
+---------------

Mine didn't smoke, it just didn't work.  Then again, I was VERY careful when
I tried it.

BTW, SIMCGA does not use the CGA card; it translates BIOS calls for the CGA
into equivalent Hercules card commands, allowing CGA programs that go through
the BIOS to run unmodified on Hercules monitors.  (I assume it's BIOS only,
since it's doubtful that software could deal with writing directly to the
CGA.)

++Brandon
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