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From: nesbbx!billsey@agora.UUCP (Bill Seymour)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: Faster chips for CBM 68020 Card?
Message-ID: <1923e720.ARN00d4@nesbbx.UUCP>
Date: 15 May 91 02:02:08 GMT
Article-I.D.: nesbbx.1923e720.ARN00d4
References: <1991May13.201735.9720@comspec.uucp>
Reply-To: billsey@nesbbx.UUCP
Followup-To: comp.sys.amiga.hardware
Organization: NES, Inc.
Lines: 27

In article <1991May13.201735.9720@comspec.uucp>, Jeff Goebel writes:

> It's hard keeping rumours from facts.  Tel me please:
> 
> Can you change anything in a Commodore 68020 card to increase speed?
> I have heard tell of replacement chips which are faster than 14Mhz.
> 
> What's the scoop?

	With the 2620 card, the easy way to increase speed (easy he said?) is
to swap the existing 110ns memory chips out for 80ns memory chips. That and
a jumper change allows you to run a zero wait state system. It gives about
a 17% improvement, according to Jez San's Speed 2.0 program.
	Swapping out the processor wouldn't give you much without some major
changes, since the 2620 is a syncronous 14.32MHz board, changing the 68881
to a faster one and adding the crystal oscillator would work though, and
in fact they have jumpers and a place on the board for the crystal.

> Jeff Goebel.
> Comspec Staff.  I am obligated to point out that my messages are the views
> and opinions of myself, and not those of Comspec, or my bosses in particular.
> Comspec:  (416) 633-5605    PCPN BBS: (416) 633-0185

  -Bill Seymour     nesbbx!billsey@agora.uucp or nesbbx!billsey@agora.rain.com
*****   American People/Link  Amiga Zone Hardware Specialist   NES*BILL  *****
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