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Article #17

Re: Adaptec 2940, 2G disk, CD-ROM and OS install problem: ?!?!

#17
From: John Foust
Date: Wed, 01 Nov 1995 16:27
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In article <46tglp$a1c@panix.com>, fishman@panix.com (Harvey Fishman) says:
>
>I have a somewhat similar setup (Micronics system board, different number
>of drives, and internal external), but your problems are the classic
>symptoms of bad termination.  The AHA-2940 is ____****EXTREMELY****____
>finicky about having that spot on.  I have been using SCSI since 1989, but
>most of that was with an AHA-1542B.  When I moved to the AHA-2940 earlier
>this year, it was like starting over learning from scratch.  You MUST have
>perfect cables and terminations.  It is a great card, but it is fussy.

Grumble-fritz...  I'm having trouble with a 2940 in a new Endeavor
Pentium 133 under WinNT 3.51.

Everything appears to be fine except for random
"bad data" errors when backing-up to an external Exabyte 8500,
but it's also reported that it couldn't read from internal
hard disks when backing-up, too; and WinNT nicely took the
drive offline and kept running.

I've double-checked the termination resistors on the three
internal HDs and one internal CDROM.  With any external
device, either the 8500 or a Sony 920 CD-R, I have to set
the Ctrl/A adapter termination the *wrong* way (termination on)
for the system to boot...  otherwise it hangs after the boot-up
SCSI bus scan.

The external 8500 is on a short 3 foot external cable, 
my only theory is that the internal ribbon may be a bit long..

Does any of this ring a bell?  I think I'll invest in a
nice SCSI-view cable, and active terminators...

How can I check the version number of the Adaptec's driver,
and how can I get an update?

- John
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Path: arc1-ca.pugleaf.net!homer.alpha.net!usenet
From: syndesis@beta.inc.net (John Foust)
Newsgroups: comp.os.os2.setup.misc,comp.os.ms-windows.nt.setup.misc,comp.periphs.scsi
Subject: Re: Adaptec 2940, 2G disk, CD-ROM and OS install problem: ?!?!
Date: 1 Nov 1995 16:27:42 GMT
Organization: Syndesis Corporation
Message-ID: <47875u$3fb@homer.alpha.net>
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