Re: A2620 and DRAM timing jumper j500

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#2222

From: Roger Uzun
Date: Sat, 18 Nov 1989 20:56

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Well I will probably be jumpering it back soon just, since like
you mentioned it could cause a lot of headaches someday in the summer.
For now I have ruin applications/mem diagnostics for 2+ days straight
on the machine with no problems, speedup is in the 10-15% range with
most applications, slightly less with fp intensive stuff.
I really did it just to test things out, see what would happened,
I have good reason to believe 80ns DRAMS are not needed, only
90ns parts are really needed.  2M of the RAM on the board is 90 ns
2M more is 100ns.  In any case I do not like to desolder that much
RAM and I would never do it for 1 10-15% increase in performance.
For those more daring types you may want to try it at your own 
risk.  Seems to be working for me.
 
-Roger

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From: uzun@pnet01.cts.com (Roger Uzun)
Newsgroups: comp.sys.amiga.tech
Subject: Re: A2620 and DRAM timing jumper j500
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Date: 18 Nov 89 20:56:06 GMT
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