Path: utzoo!utgpu!watmath!att!tut.cis.ohio-state.edu!cs.utexas.edu!sun-barr!newstop!sun!pepper!cmcmanis
From: cmcmanis%pepper@Sun.COM (Chuck McManis)
Newsgroups: comp.sys.amiga
Subject: Re: A1000 Rejuvenator Project (POO POO ON C-A)
Message-ID: <121627@sun.Eng.Sun.COM>
Date: 15 Aug 89 18:47:07 GMT
References: <18566.24DF49E1@cmhgate.FIDONET.ORG> <12400@s.ms.uky.edu> <3166@scolex.sco.COM>
Sender: news@sun.Eng.Sun.COM
Reply-To: cmcmanis@sun.UUCP (Chuck McManis)
Organization: Sun Microsystems, Mountain View
Lines: 36

In article <12400@s.ms.uky.edu> sean@ms.uky.edu (Sean Casey) writes:
>You know I made several queries to Commodore about using the new chips in
>an A-1000. The replies I got said it was "impossible". I said "hey what if
>I desolder some chips and do a little dirty work". "Still impossible."

>As time goes on, the more dissapointed I become with Commodore-Amiga. Either
>they really don't know their machines, or they really just don't care about
>us A1000 owners.

Sean, you shouldn't be so harsh on them. If you were CATS, and you had
to deal with a *bunch* of A1000 owners who wanted to upgrade to the ECS
chip set, and you knew what was involved (some serious digital design)
then your best answer is "It isn't possible." Which really means "If you
have to ask, you won't be able to do it." At the same time, they make 
all of the information an engineer would need to do such a project 
available. Schematics of the old system, schematics of the new system,
pinouts of the chips etc. What it requires to "upgrade" the A1000 is 
essentially a new section of the motherboard, and anyone with enough
design experience can design it, but if you ask the question "How do
I upgrade?" then, whether or not you actually are a qualified designer,
you cannot be distinguished from someone who can't change a chip without
toasting it. If on the other hand you go ahead and get the obvious 
information such as the various schematics, and ask the question
"How much driving current does the new Agnus have ? What's the clock skew
between address setup and when the blitter actually latches the data
on the bus? Can I use the page mode DRAMs in the WCS?" Then you will get 
serious answers about how to solve your problems. That is because your 
questions show that you have given it serious thought, and have even 
sketched out a preliminary design. 



--Chuck McManis
uucp: {anywhere}!sun!cmcmanis   BIX: cmcmanis  ARPAnet: cmcmanis@sun.com
These opinions are my own and no one elses, but you knew that didn't you.
"A most excellent barbarian ... Genghis Kahn!"