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From: dewolfe@ug.cs.dal.ca (Colin DeWolfe)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: Expanding 2620's RAM
Keywords: ZIPs?  Which ones?
Message-ID: <1991Jan30.162800.27311@cs.dal.ca>
Date: 30 Jan 91 16:28:00 GMT
References: <14425@chaph.usc.edu> <18286@cbmvax.commodore.com>
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In article <18286@cbmvax.commodore.com> daveh@cbmvax.commodore.com (Dave Haynie) writes:
>In article <14425@chaph.usc.edu> aliu@aludra.usc.edu (Alex C. Liu) writes:
>
>You can add 2 Megs of DRAM to the A2620, for a total of 4MB.  The memory type
>is 256K x 4 at 100ns or better, in the ZIP package.  Generically, 44256Z-10 is
>a common part number; the Toshiba parts I have here on this board are called
>TC514256AZ-10.  These parts need to be soldered in, as I mentioned.  Then you
>add a shunt block, or otherwise electrically connect the terminals of J301, 
>which tells the autoconfig logic that you're now 4MB rather than 2MB.  If all
>goes well, it works.  
>
>There's a simple memory test built into the A26x0 ROM monitor.  You start up
>your system with the two mouse buttons held down.  Then type "M".  Once in the
>monitor, you can run the memory test with the command:
>
>	T 200000 600000
>
>for 4MB of memory.  I usually run it once with, once without, the I-Cache turned
>on (the monitor starts up with it off, you type "hc 1" to turn it on).

Is there such a test built into the A3000 somewhere?  I might be having memory
problems (lots of ..04 and ..03 gurus) and would like to know for sure.
>
>-- 
>Dave Haynie Commodore-Amiga (Amiga 3000) "The Crew That Never Rests"
>   {uunet|pyramid|rutgers}!cbmvax!daveh      PLINK: hazy     BIX: hazy
>	"What works for me might work for you"	-Jimmy Buffett

--
Colin DeWolfe
dewolfe@ug.cs.dal.ca