Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!rochester!kodak!hysell
From: hysell@kodak.UUCP (John Hysell)
Newsgroups: comp.os.minix
Subject: Re: ATI VGAWonder
Summary: try forced CGA; try 16-bit
Keywords: interrupt hang incompatibility
Message-ID: <2275@kodak.UUCP>
Date: 17 Jan 90 13:50:26 GMT
References: <1990Jan16.044748.18071@ux1.cso.uiuc.edu> <1990Jan16.045403.18941@ux1.cso.uiuc.edu>
Organization: Eastman Kodak Co., Rochester, NY
Lines: 29

In article <1990Jan16.045403.18941@ux1.cso.uiuc.edu>, bc@ux1.cso.uiuc.edu (B.C.) writes:
> I got the following message:
> 
> Unexpected interrupt or trap: vector = 13.  pc = 0x147  text+data+bss = 0x11E
> 
> My Norton Programmer's Guide tells me that interrupt 13 (decimal) is invoked
> during the vertical retrace period on a color display.  I am using an ATI
> VGAWonder 512k VGA card.  It seems to work OK, but I have gotten this error
> twice.  Paul Allen tells me that the kernel ought to charge right on after it
> gets this error, but it doesn't -- it hangs.  Completely.
> 
> 	2)  Has an ATI VGAWonder (256 or 512k)
> 	3)  Knows what I can do about it.

   I have an ATI VGAWONDER with 512K (I think it's a GREAT video board!), and	   have used it with MINIX 1.2 in an IBM XT, and am using it now with MINIX 1.3
   in an IBM AT with an INTEL 386-INBOARD, and 3.5 megs of RAM, a WD-1003
   controller and 2 seagate ST251 drives.  The ATI card drives a NEC MultiSync.
     While using it with MINIX 1.2 on the XT, I used to have all sorts of video
   problems.  I finally found that if I booted DOS and used the ATI utility
   program VSETUP and forced the card into CGA; SHUT OFF THE XT; and then booted   MINIX from a cold start, everything would work fine.
     Later, while running MINIX 1.2 on the AT, I did not have these problems.
   The chief difference (aside from obvious machine change) was that I have
   reconfigured the ATI card for 16-bit I/O.  Under MINIX 1.3, it remains very
   stable.  (Next; to try MINIX 1.5)

Good luck;
-John Hysell
hysell@kodak.com
hysell@kodak.uucp