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From: letzer@nvpna1.prl.philips.nl (Wim Letzer)
Newsgroups: comp.sys.amiga
Subject: memory problems on a A500
Message-ID: <419@prles2.UUCP>
Date: 9 Mar 89 17:14:27 GMT
Sender: nobody@prles2.UUCP
Reply-To: letzer@nvpna1.prl.philips.nl (Wim Letzer)
Organization: Philips Research Labs Eindhoven
Lines: 16

Hello net,

	I have downloaded the MD memory diagnostic program and ran it
of course. It was since then that I discovered that I had a failing
bit in location 0x254ef. Whenever I write a 0x08 to that location I
always read back a value of 0x00. 8^(. Seems I have a bad memory chip.
	Does anyone have experience in replacing a defective 256k1 dram
chip. Can I take any XX41256-15 to replace it with? And how can I be
sure that I am replacing the right one without having to use a scope.
	I've posted a simular article to comp.sys.amiga.tech, but
haven't had any answer up to now. I would sure appreciate any help.

					thanks in advance,
						Wim Letzer.
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