i386/3460: Cyrix 486DX2/66 mis-identified as 486DLC

[ab@gxis.de]

>Number:         3460
>Category:       i386
>Synopsis:       Cyrix 486DX2/66 socket-3 CPU is mis-identified as 486DLC
>Confidential:   yes
>Severity:       non-critical
>Priority:       low
>Responsible:    bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          support
>Submitter-Id:   net
>Arrival-Date:   Mon Sep 08 17:30:01 GMT 2003
>Closed-Date:
>Last-Modified:
>Originator:     Alexander Bochmann
>Release:        OpenBSD 3.4 (RAMDISK) #121: Sat Sep  6 03:58:09 MDT 2003
>Organization:
net
>Environment:
	
	System      : OpenBSD current
	Architecture: OpenBSD.i386
	Machine     : i386
>Description:
	
	Cyrix 486DX2/66 CPU is reported as 486DLC (see dmesg 
	below). I have additionally tried 3.3 and 2.5 install 
	disks with the same result.

	This may or may not be a problem, depending on OpenBSDs 
	internal usage of the information (workarounds for 486DLC 
	cache stuff?) - installation seems to work fine, though.

	The Cyrix/TI 486DLC is an upgrade for 386DX boards
	with 1K internal cache and some other features, no internal 
	FPU.
	The Cyrix 486DX2 is a "real 486DX" with FPU, to be used 
	on 486-class socket-3 mainboards. Some DOS tools report 
	this chip as "Cx486DX2, ID=1Bh, Rev=31h".

OpenBSD 3.4 (RAMDISK) #121: Sat Sep  6 03:58:09 MDT 2003
    deraadt@i386.openbsd.org:/usr/src/sys/arch/i386/compile/RAMDISK
cpu0: Cyrix 486DLC (486-class)
WARNING: CYRIX 486DLC CACHE UNCHANGED.
real mem  = 33144832 (32368K)
avail mem = 27131904 (26496K)
using 430 buffers containing 1761280 bytes (1720K) of memory
mainbus0 (root)
bios0 at mainbus0: AT/286+(00) BIOS, date 12/15/93
apm0 at bios0: Power Management spec V1.0
pcibios at bios0 function 0x1a not configured
bios0: ROM list: 0xc0000/0x8000
isa0 at mainbus0
isadma0 at isa0
pckbc0 at isa0 port 0x60/5
pckbd0 at pckbc0 (kbd slot)
pckbc0: using irq 1 for kbd slot
wskbd0 at pckbd0: console keyboard
vga0 at isa0 port 0x3b0/48 iomem 0xa0000/131072
wsdisplay0 at vga0: console (80x25, vt100 emulation), using wskbd0
wdc0 at isa0 port 0x1f0/8 irq 14
wd0 at wdc0 channel 0 drive 0: <QUANTUM FIREBALL ST3.2A>
wd0: 16-sector PIO, LBA, 3079MB, 6256 cyl, 16 head, 63 sec, 6306048 sectors
wd0(wdc0:0:0): using BIOS timings
we1 at isa0 port 0x300/32 iomem 0xcc000/16384 irq 10: SMC8216/SMC8216C (16-bit)
we1: address 00:00:c0:75:9e:dc
npx0 at isa0 port 0xf0/16: using exception 16
pccom0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo
pccom1 at isa0 port 0x2f8/8 irq 3: ns16550a, 16 byte fifo
fdc0 at isa0 port 0x3f0/6 irq 6 drq 2
fd0 at fdc0 drive 0: 1.44MB 80 cyl, 2 head, 18 sec
biomask 4040 netmask 4440 ttymask 4442
rd0: fixed, 3560 blocks
wd0: no disk label
root on rd0a
rootdev=0x1100 rrootdev=0x2f00 rawdev=0x2f02


>How-To-Repeat:
	
	boot OpenBSD on a 486 system with Cx486DX2 CPU
>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted: