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Date:      Fri, 17 Jul 1998 10:14:59 -0700
From:      robert t tan <rotan@cs.pdx.edu>
To:        scsi@FreeBSD.ORG
Cc:        rotan@cs.pdx.edu
Subject:   AHA-2940UW
Message-ID:  <199807171715.KAA08787@sirius.cs.pdx.edu>

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Hi,

I have a Micron Millenium system that *ran fine* with 
RELEASE 2.2.2, and win95. At that time I had a Buslogic 
SCSI controller that ran my hard drive (8 bit) and 
cdrom drive (8 bit).

I replaced my old ( crashed ) hard drive with a new 
2G, Western Digital ( SCSI Wide ), and the Buslogic 
card, with an Adaptec (AHA-2940UW), BIOS v1.32 
(http://www.adaptec.com/products/overview/aha2940uw.html)

The result is that I can't boot FreeBSD. I terminated 
all right, Win95 has no problems getting up, and has a 
partition of 250M.

I Disabled the following options in the BIOS.
. > 1 GB
. Plug And Play Operating System ( both in mainboard and adapter )

I have tried the following:

1: Taking out the adapter and booting untill 'No Operating System'
   then putting the adapter back in ( same, or other slot), and try again.
2: Taking out all other cards, exept AHA-2940, and Video card.
3: Put a video card, in a ISA slot, xor PCI slot
4: Disconnecting CDROM drive, so only hard drive is connected to controller.
5: Disabling sync, and disconnect in SCSISelect, for cdrom and drive.

I am getting the following system messages when my 
system is trying to boot, RELEASE2.2.6/updates/boot.flp. ( about 7/8/98 ).

	DPT: RAID Manager driver, version 1.0.1
	Probing for devices on PCI bus 0:
	chip0 <intel 82437FX PCI cache memory controller> rev 2 on pci0:0:0
	chip1 <intel 82371FB PCI-ISA bridge> rev 2 on pci0:0:0
	ahc0: <Adaptec 2940 Ultra SCSI host adapter> rev 1 in 1 irq 11 on pci0:17:0
	ahc0: aic7880 Wide Channel, SCSI Id=7, 116 SCBs
	ahc0: waiting for SCSI devices to settle
	ahc0: board is not responding
	cmd fail
	(ahc0:0:0): SCB 0x1 timed out with recovery in progress
	(ahc0:0:0): "unknown unknown ????" type 13 fixed SCSI 0
	uk1 (ahc0:0:1): Unknown
	ahc0: board is not repsonding
	..

I noticed people are having problems with this card, in 
maybe similar ways. But I haven't found a specific response 
yet that seems to solve it.  Also don't know what else to try
Did get a note somewhere in the FreeBSD, newsgroup search. that 
maybe downgrading the controller BIOS from v1.32 to v1.25.
I don't know how to do this or if this is actully a good idea.

So what is the fix to this ?

Tnx, robert t tan. ( rotan@cs.pdx.edu )

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