Path: utzoo!mnetor!uunet!mcvax!ukc!eagle!kjws
From: kjws@eagle.ukc.ac.uk (K.J.W.Smithers)
Newsgroups: comp.sys.amiga
Subject: Re: Problems with Hard disk and 4.3 motherboard?
Message-ID: <4595@eagle.ukc.ac.uk>
Date: 6 Mar 88 12:39:58 GMT
References: <23043@amdahl.uts.amdahl.com> <3408@cbmvax.UUCP>
Reply-To: kjws@ukc.ac.uk (K.J.W.Smithers)
Organization: Computing Lab, University of Kent at Canterbury, UK.
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In article <3408@cbmvax.UUCP> daveh@cbmvax.UUCP (Dave Haynie) writes:
>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"


	PLEASE PLEASE don't do something so rash as to change the relatively
simple numbering system. I am a poor user stuck with a revision 4.0 b2000
the reason why I care is that I AM *WISHING* TO ***USE*** my CSA 68020 card.
	A CSA 68020 does not work with a C= A2090 h-disk on 4.0 b2000's
Since Commodore UK have refused to answer any of my letters as have their
service sub-contractors I have been left talking (expensively) to a German
rep. of CSA. It has been helpful to make it quite clear which revision I have
it is hard enough with the language barrier let alone having to deal with coded
boards! 
	BUT more importantly is the /VPA line anything to do with the problem
on my board? I have deciphered something about resistors in my conversations
with CSA but since it has been 7 seven SEVEN **SEVEN** MONTHS since I ordered
my board it makes waiting for the A2620 look easy since that apparently will
work! LOOK someone I am getting very very angry, p*ssed etc with the way I am
being treated. Is their any way I can get my system to work in harmony?

		Kit Smithers.

My anger is truly directed against Commodore UK who refuse to help me even
replace 6 keytops on my amiga which got slightly melted. I *MUST* buy a new
keyboard at 80pounds for a few bits of plastic!
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Still trying to go hard and fast :-(

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