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Article #785

Rainbow100+ Memory upgrade

#785
From: Thomas Weichert
Date: Mon, 17 Dec 1990 02:34
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Reading through the DEC Installation guide made it look so easy!
In reality not so, it seems?!
I plunged my 256k RAM chips in the sockets, set the jumpers on the memory
board to the according position(on,as mentioned in the manual), and then
blue-eyed me believed everything will be the 896kHEAVEN. The FSOAB didn't 
feel the same way, so here goes nothing -> -> -> ->


W H A T   H A V E   I D O N E   W R O N G ???

Are there any jumpers on the mainboard to be set, that are not mentioned
in the beautiful manual @#@!!???

The only difference in layout between 4164 and 41256 is that pin1 has A8
on, whereelse on the 4164 it's not used, therefore I flicked the switches
to "OFF" and there you go, I had 512k available. What's my problem??

Second question: If it is my mainboard, and I can only use the RAMS as 64k
ones, fine, be it so; BUT how do I tell the setup about the new memory??


Still wondering why I bother

Thanx in advance				Thomas
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Path: arc1-ca.pugleaf.net!utzoo!censor!geac!torsqnt!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!samsung!munnari.oz.au!mullauna!tw

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Path: arc1-ca.pugleaf.net!utzoo!censor!geac!torsqnt!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!samsung!munnari.oz.au!mullauna!tw
From: tw@mullauna.cs.mu.OZ.AU (Thomas Weichert)
Newsgroups: comp.sys.dec.micro
Subject: Rainbow100+ Memory upgrade
Summary: Help needed to install memory to full capacity!
Keywords: 256kRAMs,what about jumpers?
Message-ID: <tw.661401266@mullauna>
Date: 17 Dec 90 02:34:26 GMT
Sender: news@cs.mu.oz.au
Lines: 24