Re: Applied Engineering GS RAM

[waynes@intergate.ca (Wayne Stewart)]

Gary Gouriluk  wrote
> I have an Applied Engineering GS RAM expansion card that gives me 3200K,
> according to the Finder, when I put it in my ROM 3 IIgs.
> 
> When I run a memory test (Bit Banger), it says bad memory at $1E0100. A
> different memory test says the problem is at $100000 (less specific?).
> Which chip would be the problem? Can I use chips from an Apple Memory
> Expansion card to replace it?
> 
> It seems to me, because this GS Ram has 6 banks of 8 chips and the Apple
> card has 4 banks of 8 chips, that the GS Ram is really 1.5 megs and the
> finder doesn't know it. Anybody know what's up with that?

The problem is the GS-RAM is incompatible with the ROM 3. It'll work just 
fine in a ROM 0 or 1 though. A number of AE memory cards needed different 
PALs or GALs for use in a ROM 3 or ROM 1. I don't believe they ever made 
them for the GS-RAM.

A fully populated GS-RAM holds 1.5mb. Add that to the memory in a ROM 3 and 
you get about half a mb less than the ROM three thinks it has with that card 
in it. A pity AE didn't follow Apples guidlines in this area.

	Wayne