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From: jeh@vax5.cit.cornell.edu
Newsgroups: comp.sys.tandy,comp.sys.ibm.pc.hardware
Subject: Tandy 4000 vs. Wang VGA incompatibility
Message-ID: <1991Jan11.190207.1992@vax5.cit.cornell.edu>
Date: 11 Jan 91 23:02:07 GMT
Distribution: comp
Lines: 28

I've got a Tandy 4000 at home, with a rev. C1 motherboard and
bios version 1.03.01 (by Tandy's version scheme).  This is
Tandy's first-generation 16 MHz 386 system; it uses the original
Chips and Technologies 386 chipset, whose name escapes me at the
moment, and a Phoenix BIOS.  I'm trying to install a Wang VGA
card, which uses the Tseng Labs ET-3000 chip, in this machine.
The computer seems to hang upon power-up-- the video card doesn't
seem to get initialized and the computer never does anything
further in the start-up sequence.  I eliminated all cards except
32-bit memory and Tandy's serial/parallel card, to no effect.

The odd thing is, I tried it in a 4000LX (Tandy's
nearly-identical 20 MHz box), and it works fine. This machine was
purchased shortly after or before the 4000 (I can't remember
which came first), also has a rev C1 motherboard, and has ROM rev
1.04.01.  The card also works on a 16 MHz 386SX noname
motherboard with Intel's chipset.  I would also hope :) that it
works on Wang's machines of its era, which I think are based on
the same C&T chipset as the 4000.

Anybody have a clue?  Is it possibly a bug in the BIOS?  (naw,
Tandy's perfect :)

  --jh

--
John Hood, Mann Library, Cornell University
jhood@albert.mannlib.cornell.edu, jeh@crnlvax5.bitnet, uunet!biar!jhood