Path: utzoo!utgpu!water!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!mailrus!uwmcsd1!marque!uunet!mcvax!hp4nl!dutrun!dutesta!alfred
From: alfred@dutesta.UUCP (Herman Adriani & Alfred Kayser)
Newsgroups: comp.sys.atari.st
Subject: Re: Memory expansion
Message-ID: <1208@dutesta.UUCP>
Date: 3 Oct 88 10:02:21 GMT
References: <880920-061901-3633@Xerox> <1988Sep25.190723.17209@gpu.utcs.toronto.edu> <803@cacilj.UUCP>
Reply-To: alfred@dutesta.UUCP (Herman Adriani & Alfred Kayser)
Organization: Delft University of Technology, Dep. of Electrotechnical engineering.
Lines: 14

The 1040ST has indeed 2 banks of memory. Each bank has 512K DRAM in it.
To expand your memory de-activate one bank (512K) and then you can add 2M.
This gives you 2.5 Mb of memory. If you de-activate the other half as well, and
put 2Mb back in it then you have 4Mb of memory!!. That's easy, isn't it. The
only problem is that 1Mb chip are a bit expensive here.
Each bank used in the 1040ST can, if my memory banks are operating at the moment (monday morning), have 128K, 512K or 2Mb of RAM. This is probably restricted by
the MMU.
					herman.

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| Herman Adriani & Alfred Kayser: Computer fans especially from 24 pm to 7 am |
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