Article View: comp.sys.ibm.pc
Article #8392Re: ATI EGA Wonder BIOS fix (REPOST)
From: Christian Franke
Date: Mon, 11 Dec 1989 09:50
Date: Mon, 11 Dec 1989 09:50
40 lines
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1846 bytes
In article <257f06b8:7308.1comp.ibmpc;1@ddsw1.MCS.COM>, andyross@ddsw1.MCS.COM (Andrew Rossmann) writes:
> [...]
>
> The above program is a TSR that returns the code. This is not really the
> correct way to do things. If your card supports the 1Ah call, you should
> use the following sequence:
>
> MOV AH,1Ah ; the command
> MOV AH,1 ; set display combination code
> MOV BH,0 ; inactive display code (leave 0 if only 1 display)
> MOV BL,8 ; active is VGA analog color (7=mono, 4=EGA)
> INT 10h ; call it up
>
> [...]
>
> Andrew Rossmann
> andyross@ddsw1.MCS.COM
This is ok for cards supporting the AX=1A01h (set DCC) call.
Unfortunately, the ATI EGA Wonder only supports the AX=1A00h (get DCC) call.
It returns AL=1Ah only on the get DCC call.
So, it seems to be necessary to use such a TSR to fix the problem.
The TSR I've posted is a quick hack designed to fix my specific problems
with WP 5.0 and NCC.
A real fix should also correct the DCC values returned by the AH=1Bh
(get state info) at offset 25h,26h.
Regards,
Christian Franke
Aachen University of Technology
Lehrstuhl fuer Informatik I
Ahornstrasse 55
D-5100 Aachen
Federal Republic of Germany
Tel.: 0241 / 80-3586
UUCP: franke@rwthinf.uucp ({...mcvax}!unido!rwthinf!franke)
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Path: arc1-ca.pugleaf.net!utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!snorkelwacker!bloom-beacon!eru!luth!sunic!mcsun!unido!rwthinf!franke From: franke@rwthinf.UUCP (Christian Franke) Newsgroups: comp.sys.ibm.pc Subject: Re: ATI EGA Wonder BIOS fix (REPOST) Summary: vgafix.com not ok for EGA Wonder Keywords: ATI EGA Wonder Message-ID: <1908@rwthinf.UUCP> Date: 11 Dec 89 09:50:21 GMT References: <1798@rwthinf.UUCP> <257f06b8:7308.1comp.ibmpc;1@ddsw1.MCS.COM> Organization: RBI - RWTH Aachen Lines: 40