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VESA Support under MDOS?
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Fudeba
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View this member's profileSearch all posts from this memberSend an email to this memberhttp://www.caetano.eng.br/
posts: 35
since: 31 Oct, 2003
1. VESA Support under MDOS?
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Hi,

I was playing with many DOS emulators and most of them relies on weird resolutions (such as 512x384x15 bits), which seems to be provided by MySNAP drivers, but MySNAP seems to not act under MDOS sessions.
My video board is a Matrox G550 (32MB of RAM), and it does support VESA 3.0 by hardware, but do not support these weird modes natively.
I had tried many "DOS universal VESA drivers" (including the old Sci-Tech 6.53, which I had bought several years ago) but these drivers just do not understand my video board (unknown chipset is the error message).
Anyone had any success using such universal vesa with recent video boards under MDOS?

Regards,
Daniel Caetano

Date: 01 Aug, 2004 on 17:24
LewisR
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posts: 20
since: 16 Aug, 2003
2. Re:VESA Support under MDOS?
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I tried several with my ThinkPad T30 under DR-DOS 7.03, but none seem to work. I think the real reason is a change in the location of the card's memory address space. I can't seem to get it (the T30 uses an ATI Radeon chip) beyond standard VGA under DOS. I seem to run into the same type of behavior in a VDM...

HTH

---
Lewis
--------------------------
Lewis G Rosenthal, CNA
Rosenthal & Rosenthal

Date: 07 Aug, 2004 on 02:28
kiewitz
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since: 11 Jan, 2004
3. Re:VESA Support under MDOS?
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Afaik VESA support under MDOS directly uses the graphic-cards BIOS, which means if this BIOS lacks VESA support, you won't be able to get it going.

SNAP is for 32-bit OS/2 PM and does not contain 16-bit Realmode code (used under MDOS).

Date: 16 Aug, 2004 on 11:18
VESA Support under MDOS?
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