franke@rwthinf.UUCP (Christian Franke) (12/07/89)
Hello!
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:
WordPerfect 5.0 refuses to load the EGA*.FRS softfonts (problem mentioned
in a posting july '88).
The Norton 4.5 NCC Program refuses to set the EGA color palette.
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
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)andyross@ddsw1.MCS.COM (Andrew Rossmann) (12/08/89)
>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
franke@rwthinf.UUCP (Christian Franke) (12/11/89)
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)
lmhg0369@uxa.cso.uiuc.edu (12/13/89)
Well, neither of the two posted fixes to the ATI EGA Wonder card work for me. Namely, with Turbo C/Pascal, I can't get the beastie to go into 43-line mode. And I have a game that still won't come out of CGA graphics mode. It seems that most programs where you insist that you have an EGA card, like when you give it a command-line switch or tell it in the setup program, things work fine. In fact, after installing the TSR, when I go to TC, the screen just switches to some unhealthy color and sits there. I have to 'mode co80' to get it back. L. Haskins -- lmhg0369@uxa.cso.uiuc.edu