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Article #3202A1000 512K "piggyback RAM" info needed
From: Markus Wandel
Date: Mon, 09 Apr 1990 04:44
Date: Mon, 09 Apr 1990 04:44
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1411 bytes
I need to find the circuit which can be used with the Amazing Computing piggyback memory hack to map the extra memory at $C00000. The reason for this is weird. The piggyback memory is in my machine, as is the address decoding hack, but I didn't put it there. I paid someone the cost of the chips plus a bit extra to put it in for me. This guy (hi Mark!) had done it so many times, he could have done it blindfolded, and he did a perfect job, but I never got a schematic for the extra address decoding. He didn't have it. He had lost it long ago and was just copying the daughterboard modifications from his own machine. The memory has worked without a hint of trouble for two years, but just in case I need them, I think complete schematics might be a good thing to have. I have the Amazing Computing article, I just need the documentation for the address decoding. I'm sure it's floating around somewhere as an ASCII file, could someone mail it to me? I'd much appreciate it. Markus Wandel mwandel@tiger.waterloo.edu (519) 884-9547
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!watserv1!watdragon!tiger!mwandel From: mwandel@tiger.waterloo.edu (Markus Wandel) Newsgroups: comp.sys.amiga.tech Subject: A1000 512K "piggyback RAM" info needed Keywords: $c00000 Message-ID: <23027@watdragon.waterloo.edu> Date: 9 Apr 90 04:44:16 GMT Sender: daemon@watdragon.waterloo.edu Distribution: comp Lines: 21