Re: Memory expansion

["GarberStreet Enterprises" <willy46pa@comcast.net>]

> > I am looking for the pinouts for the memory
> > expansion ports/slots for IIc, IIe, and IIgs.
>
> They are all in the relevant hardware/technical reference manuals, of
> course.
>
> The IIe doesn't have a "memory expansion" slot as such, but I expect you
> are referring to the "auxiliary slot", which is primarily used to expand
> the memory.  The standard slots in the IIe and IIgs can also be used for
> some types of memory expansion.
>
> The IIc memory expansion slot only exists in the IIc+ and the last two
> models of the IIc.  The first two IIc models have no built-in capability
> to expand their memory, but Applied Engineering came up with a method of
> doing so, by intercepting the signals between the motherboard and the
> CPU and MMU chips, and adding a piggyback card.
>
> Part 13 of the FAQ for this group (Hardware Hacking) summarises the
> pinouts of the standard slots.  I didn't see anything in there about the
> pinouts of the other slots.
>
> I don't have time to type in the details of the others right now, as you
> would probably need a fair amount of additional detail to make sense of
> the pin signal names.  I wouldn't recommend attempting to connect any
> custom hardware to these slots if you don't have access to the official
> hardware documentation for the computers in question.
>
> David Empson
> dempson@actrix.gen.nz

Thank you David, I;ve been trying to get these manuals but everyone
wants a fortune for them. Maybe I can make some sense of them from
the schematics, but I will need to buy these manuals, I'm sure.

--

Bill @ GarberStreet Enterprises
http://garberstreet.netfirms.com




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