From nobody  Thu Feb 20 18:26:03 1997
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Date: Thu, 20 Feb 1997 18:26:03 -0800 (PST)
From: dpb@kafka.hqs.crc.com
To: freebsd-gnats-submit@freebsd.org
Subject: Cyrix 150+ CPU is seen as a 486, Kernels made for i586 don't recognize the chip as 586.
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>Number:         2787
>Category:       kern
>Synopsis:       Cyrix 150+ CPU is seen as a 486, Kernels made for i586 don't recognize the chip as 586.
>Confidential:   no
>Severity:       non-critical
>Priority:       high
>Responsible:    freebsd-bugs
>State:          closed
>Quarter:
>Keywords:
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Thu Feb 20 18:30:01 PST 1997
>Closed-Date:    Wed Feb 26 05:18:53 PST 1997
>Last-Modified:  Wed Feb 26 05:28:44 PST 1997
>Originator:     Dan Benjamin
>Release:        2.1.7-RELEASE
>Organization:
Init
>Environment:
FreeBSD monster.hqs.crc.com 2.1.7-RELEASE FreeBSD 2.1.7-RELEASE #0: Thu Feb 20 10:
45:17  1997     root@monster.hqs.crc.com:/usr/src/sys/compile/MONSTER  i386
>Description:
At boot time, Freebsd sees the Cyrix 150+ (120Mhz) as a 486 instead of a 
Pentium 120.  When I build a kernel with the i586 option,  it fails 
to boot, the error "unrecognized cpu" so I must re-make the kernel with 
the i486 option instead - and loose performance.
>How-To-Repeat:
Get a Cyrix 120+ or 150+ CPU and make a i586 kernel on 2.1.7-R.

>Fix:
HELP!
>Release-Note:
>Audit-Trail:
State-Changed-From-To: open->closed 
State-Changed-By: mckay 
State-Changed-When: Wed Feb 26 05:18:53 PST 1997 
State-Changed-Why:  
At this time, I486_CPU is the correct value for the Cyrix 6x86 processor 
(also known as the M1).  The handbook chapter on kernel configuration 
does not explain this, and neither does LINT.  If I knew how to convert 
this to a doc pr, I would. 
>Unformatted:
