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From: billsey@agora.uucp (Bill Seymour)
Newsgroups: comp.sys.amiga.tech,comp.sys.amiga,comp.sys.amiga.hardware
Subject: Re: 25 mhz 68020 for A2620
Keywords: 68020, A2620
Message-ID: <1990Oct31.002723.24616@agora.uucp>
Date: 31 Oct 90 00:27:23 GMT
References: <858@ccd700.UUCP>
Distribution: na
Organization: Open Communication Forum
Lines: 28

In article <858@ccd700.UUCP> mike@ccd700.UUCP (M. Greer) writes:
:Will a 25 mhz 68020 work on an A2620? This seems like such a simple
:question, but I can't seem to get a reliable answer. I called two
:different dealers, who in turn called Commodore tech support, and I
:have recieved two different answers. One said it would work but could
:not qurantee that it would clock at 25 mhz (assuming of course that
:a 25 mhz clock crystal and a 25 mhz 68881 or 82 were also added), the
:other said that it would work and run at 25 mhz. Who is right? This is
:the most economical way for me to accellerate my machine and I need  
:accurate information. Our node here has a small disk, there I don't 
:get all of the posted messages. If in response to this post, you could
:also e-mail or even call me at (313)845-4070 I would greatly appreciate
:it.
:
:Mike Greer

	You could plug a 25MHz part in, but since the board is designed
as 14.32MHz syncronous, you wouldn't see any speed increase. You would
still be clocking the 68020 at the same speed as before. Changing to
a different speed crystal would just cause the syncronous design to try
anbd go async, which wouldn't work. I'm afraid to say that if you want
25MHz, you're better off to buy a 2630 or 3000.

-- 
     -Bill Seymour                                            billsey@agora
***** American People/Link Amiga Zone Hardware Specialist  NES*BILL *****
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