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July 8th, 2004, 08:53 AM
#1
Booting from a CGA adaptor in a ISA slot
Hi all,
I bought a GITOX3 motherboard as replacement for a pentium 1 board.
I use a PG-641/1281 in an ISA slot on this motherboard.
The PG-641/1281 is a Professional Graphics Adaptor made in 1985 by Matrox.
This motherboard doesn't recognize the PG-641 at al
Putting it back in the Pentium 1 it works.
When I put the onboard VGA on enable, the motherboard boots with the onboard VGA without concerning about the PG-641.
When I put the onboard VGA on disable, the system seems to boot but I don’t see anything on the screen attached to the PG-641.
No beeps saying “Oh my god! There is no video card, let me beep to the user that I cant communicate with the user”;-)
By the way, this is also the case with no display adaptor in the system and the onboard on disable.
Seems a bit strange to me.
The only thing I know about this PG-641 is, that it presents itself as a plain old CGA card.
Also when I put a plain old CGA card in an ISA slot, I get the same result.
So I think it has something to do with the BIOS on the ITOX board.
I boot with dos.
And then there is some software called TSX32 that wants to see this PG-641/1281.
The graphic part of the software that is provided with our machine is specifically written for this PG-641.
The rest of the cards is also ISA.
We need to upgrade to a newer version of the controlling software and that requires a new faster pc.
There is no update available to work with other graphic cards.
Who has an answer?
Willie
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