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From: slc@hoptoad.UUCP
Newsgroups: comp.sys.amiga
Subject: Re: New Custom Chips?
Message-ID: <3083@hoptoad.uucp>
Date: Tue, 29-Sep-87 21:02:33 EDT
Article-I.D.: hoptoad.3083
Posted: Tue Sep 29 21:02:33 1987
Date-Received: Sat, 3-Oct-87 00:37:27 EDT
References: <2948@hoptoad.uucp> <2345@cbmvax.UUCP> <2472@xanth.UUCP> <3823@zen.berkeley.edu> <2417@cbmvax.UUCP>
Reply-To: slc@hoptoad.UUCP (Steve Costa)
Organization: Presidio Software
Lines: 30

In article <2417@cbmvax.UUCP> grr@cbmvax.UUCP (George Robbins) writes:
>In article <3823@zen.berkeley.edu> bryce@hoser.berkeley.edu (Bryce Nesbitt) writes:
>> I'll bet someone could take the new chips and build a tower to stick them
>> into an Amiga 1000.  Assuming a hypothetical "Fat Agnus" pin compatible chip
>> with 1 or 2 Megabytes of CHIP RAM potential the logic to do this is
>> convoluted, but looks doable.  You would need to plug into the current Agnus
>> socket and run a clip or three down to the motherboard.  Most of the logic on
>> the board would be to unwind and/or selectively ignore the extra logic inside
>> Fat Agnus.  With FAST enough logic, timing margins should still be ok.
>> The rest of the board would be an extra 512K or 1.5Meg of CHIP memory.
>> 
>> [BTW: I know a company that would like to sell this.  In fact, I've been
>> asked to the design it.  Now if only Commodore comes out with the part! :-) ]
>
>Good luck.  No reason you shouldn't be able to demonstrate your design using
>the current Fat Agnus, problem being that most of the margins are eaten up
>by the fat vs. the external componentry on the A1000.  Also there are real
>differences on who is providing the clocks and so on.  Doesn't mean it can't
>be done, but you'd probably find it easier to redo the whole board than make
>a tower.
> 
>-- 
>George Robbins - now working for,	uucp: {ihnp4|rutgers|allegra}!cbmvax!grr
>but no way officially representing	arpa: out to lunch...
>Commodore, Engineering Department	fone: 215-431-9255 (only by moonlite)

Is there any chance of this issue being resolved by October 31? My inclination
is to keep my A1000 and buy an ASDG Two-thousand-and-one expansion box.
But if that means I will be unable to expand to the same amount of chip
memory as future custom chips, then I may exchange for the A2000.