From owner-freebsd-scsi  Thu Mar 21 18: 3:46 2002
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Date: Thu, 21 Mar 2002 18:03:42 -0800
From: Julian Elischer <julian@vicor-nb.com>
Organization: VICOR
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To: Scott Long <scott_long@btc.adaptec.com>, scsi@freebsd.org
Subject: Re: SCSI error messages.
References: <3C9A8A03.A36B57B6@vicor-nb.com> <1016761959.8445.19.camel@hollin.btc.adaptec.com>
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Scott Long wrote:
> 
> Julian,
> 
> Lemme guess.... this is an AMD Athlon CPU and a VIA chipset
> motherboard.  Check the system BIOS for any funky PCI settings like
> write combining, etc, and let me know if anything helped.  VIA chipsets
> are known to violate various PCI specs and in general are just of very
> poor quality.  I wouldn't trust VIA in my kid's game computer, let alone
> in a production server.  I hate to sound like I'm blowing this problem
> off, but this is certainly not the first report of it's kind that I've
> seen in the past year.
> 
> Scott
> 

---
It may well be Athlon, but it looks a bit like a Acer
PCI bridge from the dmesg snippets below.

Are there any particular chips I should be looking for?

---


> > Mar 21 13:31:07 oos0c /kernel: CPU: AMD Athlon(tm) Processor (1333.39-MHz 686-class CPU)
> > Mar 21 13:31:07 oos0c /kernel: Origin = "AuthenticAMD"  Id = 0x644  Stepping = 4
> > Mar 21 13:31:07 oos0c /kernel: Features=0x183f9ff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR>
> > Mar 21 13:31:07 oos0c /kernel: AMD Features=0xc0440000<<b18>,AMIE,DSP,3DNow!>
> > Mar 21 13:31:07 oos0c /kernel: real memory  = 536788992 (524208K bytes)
> > Mar 21 13:31:07 oos0c /kernel: avail memory = 518619136 (506464K bytes)
> > Mar 21 13:31:07 oos0c /kernel: Preloaded elf kernel "kernel" at 0xc039e000.
> > Mar 21 13:31:07 oos0c /kernel: Pentium Pro MTRR support enabled
> > Mar 21 13:31:07 oos0c /kernel: md0: Malloc disk
> > Mar 21 13:31:07 oos0c /kernel: Using $PIR table, 11 entries at 0xc00f1770
> > Mar 21 13:31:07 oos0c /kernel: npx0: <math processor> on motherboard
> > Mar 21 13:31:07 oos0c /kernel: npx0: INT 16 interface
> > Mar 21 13:31:07 oos0c /kernel: pcib0: <Host to PCI bridge> on motherboard
> > Mar 21 13:31:07 oos0c /kernel: pci0: <PCI bus> on pcib0
> > Mar 21 13:31:07 oos0c /kernel: pcib1: <AcerLabs M5247 PCI-PCI(AGP Supported) bridge> at device 1.0 on pci0
> > Mar 21 13:31:07 oos0c /kernel: pci1: <PCI bus> on pcib1
> > Mar 21 13:31:07 oos0c /kernel: pci1: <ATI Mach64-GB graphics accelerator> at 0.0 irq 11
> > Mar 21 13:31:07 oos0c /kernel: atapci0: <AcerLabs Aladdin ATA33 controller> at device 4.0 on pci0
> > Mar 21 13:31:07 oos0c /kernel: atapci0: Busmastering DMA not supported
> > Mar 21 13:31:07 oos0c /kernel: isab0: <AcerLabs M1533 portable PCI-ISA bridge> at device 7.0 on pci0
> > Mar 21 13:31:07 oos0c /kernel: isa0: <ISA bus> on isab0

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