Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!usc!apple!claris!sts!ditka!mcdchg!ddsw1!ddsw1!andyross
From: andyross@ddsw1.MCS.COM (Andrew Rossmann)
Newsgroups: comp.sys.ibm.pc
Subject: ATI EGA Wonder BIOS fix (REPOST)
Keywords: ATI EGA Wonder
Message-ID: <257f06b8:7308.1comp.ibmpc;1@ddsw1.MCS.COM>
Date: 8 Dec 89 01:00:05 GMT
References: <1798@rwthinf.UUCP>
Lines: 42


>Item: 7308 by franke at rwthinf.UUCP (0 responses)
>Author: [Christian Franke]
>  Subj: ATI EGA Wonder BIOS fix (REPOST)
>  Date: Thu Dec 07 1989 14:26 CST
>The ATI EGA Wonder Card (BIOS 4.02) does'nt return the correct display
>type (MCGA instead of EGA/VGA) on a call to to INT 10h, AH=1Ah. So we got
>problem with some programs: 
>The following little TSR fixes this problem, it always returns 
>BX = 0008h (VGA) on INT 10h, AH=1Ah.
>
>begin 644 egafix.com
>MZQ.</0`:=0>*Q+L(`)W/G>H`````N!`US2&)'A$!C`83`;@0);H"`<TAN``Q
>%NA(`S2$:
>`
>end
>
>Regards,
>	Christian Franke

  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

  Here is a UUENCODED program that does the above:

section 1 of uuencode 3.16 of file vgafix.com    by R.E.M.

begin 644 vgafix.com
/M!JP`;<`LPC-$+@`3,TAN
``
end
sum -r/size 42268/51 section (from "begin" to "end")
sum -r/size 46122/15 entire input file

  Andrew Rossmann
  andyross@ddsw1.MCS.COM