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From: sramtrc@windy.dsir.govt.nz
Newsgroups: comp.unix.aux
Subject: Re: some miscellaneous AUX questions (about 4MB SIMMS)
Keywords: FDHD ROM
Message-ID: <18762.274ffebe@windy.dsir.govt.nz>
Date: 25 Nov 90 17:26:22 GMT
References: <1125@duteca.UUCP> <1990Nov23.154126.23014@julius.cs.uiuc.edu>
Reply-To: sramtrc@albert.dsir.govt.nz
Organization: DSIR, Wellington, New Zealand
Lines: 25

> 
>>	   (is it possible to use 4M simms in a II?)
> 
> No. There are a couple of NuBus memory boards, but at least one (the
> National Semi) is rumored to not work with A/UX 2.0 anyway.
> 
The answer is yes. I have 4x4 + 4x1 SIMMS in my Mac II giving me 20MB
altogether. You just have to imake sure you get special Mac II SIMMS;
ie there are 3 types of 4MB SIMMS: Mac II, Mac II?, and Mac IIfx where
the ? stands for anything except fx.

If you mix 4MB and 1 MB SIMMS put the 4's in bank A. If you just have
4x4 in bank A and want to use 8MB in Finder you will have to either use
Maxima or upgrade to Mac IIx ROMS. Otherwise the Mac II ROMS will only
see 4MB even though you have 16MB. I don't know what happens under A/UX.
I suspect that A/UX will be able to find all the RAM. I did the IIx ROM
upgrade.

If you do the IIx ROM upgrade you can get the upgrade from your Apple dealer
for about $299. Don't be tempted to do the FDHD upgrade at the same time.
Just do the ROMs and then buy a FDHD drive elsewhere if you want an FDHD.
Much cheaper (eg $149).

Tony Cooper
sramtrc@albert.dsir.govt.nz