Subject: Re: AMD or Cyrix?
To: Jim Rees <rees@umich.edu>
From: Jason Thorpe <thorpej@nas.nasa.gov>
List: port-i386
Date: 05/13/1996 17:10:15
On Mon, 13 May 1996 17:29:50 -0400 
 Jim Rees <rees@umich.edu> wrote:

 > Is NetBSD known to work on AMD and Cyrix 586 chips?  Anything I should watch
 > out for, like bios or chipset versions?

NetBSD works pretty well on AMD chips ... Cyrix chips, however, are kind 
of quirky...at least the 486 chips:

[ snippet from machdep.c ]
        if (cpu == CPU_486DLC) {
#ifndef CYRIX_CACHE_WORKS
                printf("WARNING: CYRIX 486DLC CACHE UNCHANGED.\n");
#else
#ifndef CYRIX_CACHE_REALLY_WORKS
                printf("WARNING: CYRIX 486DLC CACHE ENABLED IN HOLD-FLUSH MODE.\
n");
#else   
                printf("WARNING: CYRIX 486DLC CACHE ENABLED.\n");
#endif  
#endif 
        }

I don't personally have experience with the Cyrix 586 chips, though.

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Jason R. Thorpe                                       thorpej@nas.nasa.gov
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