Path: utzoo!mnetor!uunet!cbmvax!daveh
From: daveh@cbmvax.UUCP (Dave Haynie)
Newsgroups: comp.sys.amiga
Subject: Re: Problems with Hard disk and 4.3 motherboard?
Message-ID: <3408@cbmvax.UUCP>
Date: 2 Mar 88 18:48:40 GMT
References: <23043@amdahl.uts.amdahl.com>
Organization: Commodore Technology, West Chester, PA
Lines: 31

in article <23043@amdahl.uts.amdahl.com>, kim@amdahl.uts.amdahl.com (Kim DeVaughn) says:

> In article <301@trwind.ind.TRW.COM>, robert@trwind.ind.TRW.COM (Robert W. Snyder) writes:

>> My mother board is rev 4.3. ...
>> [ description of problem *possibly* attributable to the 4.3 board ]

> Which brings up a point that I've been wondering about ... just what are
> the changes from the rev 4.2 to the rev 4.3 boards?

The main difference is that the Rev 4.3 board has a 470 Ohm pullup on the /VPA
in, whereas the Rev 4.2 only have a 4.7K pullup on the /VPA line.  This is
only an issue if you have the MOS version of the Gary chip (started some time
after R4.3 went into production) AND you're using a 68020 accelerator board
like the A2620 (hint: you're not using an A2620 yet).

> Any chance of posting a "revision history" list?  (Dave ?)

If get a chance I can look and see if there are any other changes to write
about, but most of them are similar little tweaks.  

People get so panicky over little things like ".2" vs. ".3" that they're not
supposed to even know about.  Now I know why I never used this numbering 
scheme before.  Next time we go back to coding it, like most other vendors
do.

> /kim
-- 
Dave Haynie  "The B2000 Guy"     Commodore-Amiga  "The Crew That Never Rests"
   {ihnp4|uunet|rutgers}!cbmvax!daveh      PLINK: D-DAVE H     BIX: hazy
		"I can't relax, 'cause I'm a Boinger!"