Article View: comp.sys.amiga.tech
Article #5971On WD SCSI chip bugs
From: Harvey Taylor
Date: Thu, 18 Oct 1990 23:15
Date: Thu, 18 Oct 1990 23:15
29 lines
1697 bytes
1697 bytes
In <14916@cbmvax.commodore.com>, daveh@cbmvax.commodore.com [Dave Haynie]
writes:
| [ re reselection problems in the A2091 ]
|
| Well, this problem actually has nothing to do with the 2091 per se, it's
| a bug in the Western Digital SCSI chip used for both 2091 and A3000.
| The last revision of the SCSI chip had bugs that broke reselect
| capability at the high level of software, so the A2091 and A3000 SCSI
| drivers solved the problem using low level commands. The new release of
| the chip fixed the high level commands but broke the low level commands.
Which chip is this, Dave? Is is the WD33C93 the same as in the A2090(A)?
I wonder because I have seen reports of reselection problems in the 2090.
If so, which chip revision is ok? which not?
-harvey
| [...]
| Standing on the shoulders of giants leaves me cold -REM
PS.
I gotta comment on your .sig. You know the old Newton line, If I have
seen further than others, it is because I have stood etc; but did you ever
catch the Murray Gell-Mann version? If I have seen further than others,
it is because I am surrounded by dwarfs.
Kinda gives hubris a whole new stature.
Harvey Taylor Meta Media Productions
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Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!samsung!zaphod.mps.ohio-state.edu!van-bc!rsoft!mindlink!a186 From: a186@mindlink.UUCP (Harvey Taylor) Newsgroups: comp.sys.amiga.tech Subject: On WD SCSI chip bugs Message-ID: <3590@mindlink.UUCP> Date: 18 Oct 90 23:15:01 GMT Organization: MIND LINK! - British Columbia, Canada Lines: 29