From mboxrd@z Thu Jan  1 00:00:00 1970
Date: Sat, 21 Oct 1995 13:25:19 -0400
From: Will Rose cwr@crash.cts.com
Subject: PC installation problem with aha1542.
Topicbox-Message-UUID: 2f7e6f44-eac8-11e9-9e20-41e7f4b1d025
Message-ID: <19951021172519.SKHxjmODPEqbzkDBQAdigi3n2QoYQnbCIOnvfJXYuEs@z>

Jim Davis (jdavis@cs.ARizona.EDU) wrote:
: I'm having trouble getting the PC distribution to install on an Intel
: pentium system with an aha1542 SCSI adapter. 

: I booted off a diskette built from the instructions in 'Read this section
: if you have trouble installing on the PC.' The hardware rollcall says

: Adaptec AHA-1540CP/1542CP BIOS v1.02

: SCSI ID #0 seagate st31230n drive c: (80h)
: SCSI ID #1 seagate st32550n drive d: (81h)
: SCSI ID #6 toshiba xm-4101tasunlcd

: Swapped floppies to the Plan 9 disk1, downloaded today

: C:\>A:b

: Goes to 'Configure SCSI' screen -- I chose the aha154x[BC] option at the
: default port 0x330 and rebooted. 

: 5569 free pages, 22276K bytes, swap 111236K, highwater 1112K, headroom 1388K
: CPU is a 99 MHz Pentium735 (cpuid: ax 525 dx 1bf)
: scsi0: aha1542: port 330 irq 11, dma 5
: fs...time...

: (Long pause, then)
:   
:             adaptec0: timeout cmd=#00
: adaptec0: invdcmd #02, len 1

I saw this once or twice, but don't know what I did to fix it; I'd
be inclined to slow the SCSI bus down as much as possible, and turn
off sync negotiation, fast SCSI and enable disconnect at the Adaptec's
'Ctrl-A' bios menu.  I run plan 9 on a 1542CF with less restrictive
settings, but that might get it to boot.  The other thing might be
to stop the CP automatically reconfiguring itself, if it does - I
haven't used one.

Will
cwr@crash.cts.com