🚀 go-pugleaf

Steve Parry <spug@banspamintlog.demon.co.uk> wrote:

> I have acquired a (very) old Mac, it is a Macintosh SE 
> (model No M5011). It is an all in one unit with two floppies and a
> hard drive. It starts to boot ok, smiley face and all, the face then
> turns to a grumpy one and an error code is given (I don't have it to
> hand ATM). Opening the case, I found it had 2x 1Mb 30 pin Apple
> SIMMS(bank 3 & 4) and 2x 1Mb standard 30 pin (ie PC type) SIMMs (banks
> 1 &2). Can these old Mac's use STD 30 pin SIMMS, Can they be mixed
> like this?
> If I take out the STD 30 pins and leave just the Apple SIMMS the
> machine stops booting at a much earlier stage, the error message is
> already there as soon as the screen warms up enough to read, in fact.
> Do all four banks HAVE to be fully populated for a sucessful boot?
> 
> I am not at all familiar with Macs, new or old, so any and all info
> would be warmly appreciated,

You might find Apple is a good source of information - the Apple Memory
Guide pdf document is directly useful if you can track it down.

http://product.info.apple.com/productinfo/datasheets/index.html
http://www.apple.com
http://til.info.apple.com
http://devworld.apple.com/dev/techsupport.shtml
http://www.macos.apple.com

The Classic Macs mailing list is an excellent source of old Mac info:

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