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From: "Rodney W. Grimes" <rgrimes@gndrsh.aac.dev.com>
Message-Id: <199504141519.IAA01021@gndrsh.aac.dev.com>
Subject: Re: class=bridge ???
To: bsinger@databank.com (Ben Singer)
Date: Fri, 14 Apr 1995 08:19:42 -0700 (PDT)
Cc: hackers@FreeBSD.org
In-Reply-To: <199504141417.JAA13784@databank.com > from "Ben Singer" at Apr 14, 95 09:17:23 am
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> 
> I have a pentium motherboard made by `super'; it has PCI slots
> and one VLB slot.  I get all sorts of problems when i'm trying
> to do something mildly complicated, like compile, though
> nroff has caused it too.  It's ranged from freezing to page
> faults to `bus error', and instant reboots.  This is both with
> or without X, and using both an IDE and my aha1540.  NetBSD
> has similar problems on it, but i haven't tried DOS and friends.
> 
> Is the `class=bridge' my problem, or just a bad motherboard/memory?

No, but the opti chip set might be.  Try setting the external cache
to ``write through mode'', if that doesn't fix this strange crashes
try setting the internal cache to ``write throught''.  

I have an Opti based board here, but it is not the ``super micro''
version and I have to run it with the external cache in write through
mode.

> FreeBSD 2.0.0-SNAP950322 #0: Sat Apr  8 10:39:53  1995
>     ben@koko.ben:/usr/src/sys/compile/BONES
> CPU: Pentium (Pentium-class CPU) 90 MHz  Origin = "GenuineIntel"  Id = 0x524
>   This is a Pentium 735\\90 or 815\\100  Stepping=4  Features=0x1bf FPU VME PSE MCE CX8
> real memory  = 16384000 (4000 pages)
> avail memory = 14999552 (3662 pages)
> Probing for devices on the ISA bus:
> sc0 at 0x60-0x6f irq 1 on motherboard
> sc0: VGA color <16 virtual consoles, flags=0x0>
> ed0 not found at 0x280
> sio0 at 0x3f8-0x3ff irq 4 on isa
> sio0: type 16550A
> sio1 at 0x2f8-0x2ff irq 3 on isa
> sio1: type 16550A
> lpt0 at 0x378-0x37f irq 7 on isa
> lpt0: Interrupt-driven port
> lp0: TCP/IP capable interface
> fdc0 at 0x3f0-0x3f7 irq 6 drq 2 on isa
> fdc0: (NEC 765) [0: fd0: 1.44MB 3.5in]
> wdc0 at 0x1f0-0x1f7 irq 14 on isa
> wdc0: unit 0 (wd0): <WDC AC2540H>, multi-block-16
> wd0: 515MB (1056384 sectors), 1048 C 16 H 63 S/T 512 B/S
> aha0 is a 154xCF-2.01-VC.0: enabling mailbox and residuals
> aha0: reading board settings, dma=7 int=12 150 nSEC ok, using 200 nSEC
> aha0 at 0x330-0x333 irq 12 drq 7 on isa
> aha0 waiting for scsi devices to settle
> (aha0:0:0): "FUJITSU M2694ES-512 812A" is a type 0 fixed SCSI 2
> sd0(aha0:0:0): Direct-Access 1033MB (2117025 512 byte sectors)
> scd0 not found at 0x230
> npx0 on motherboard
> npx0: INT 16 interface
> Probing for devices on the pci0 bus:
> 	configuration mode 1 allows 32 devices.
> pci0:16: OPTI, device=0xc822, class=bridge [not supported]
> 
> Help appreciated...
> 
> Ben
> 
> 


-- 
Rod Grimes                                      rgrimes@gndrsh.aac.dev.com
Accurate Automation Company                   Custom computers for FreeBSD