Re: what apple is this?

[Patrick Schaefer <PSchaefer@lycosxxl.de>]

Michael J. Mahon schrieb:

> > card. It uses eight 4164 chips to provide the 64k and has only six 
> > slots  - slot 0 and 4 are missing due to the on-board functions. 
> > Usually the ROM sits on a small PCB which goes into the position of 
> > slot 0.
>
> This one seems to have seven slots...

The seventh one (at the position where usually slot 0 is) holds a small 
pcb with two or three EPROMS.

Data and address lines are at the same pins as for the regular slots, 
but all control signals are missing. Instead of them, there are /CS_F, 
/CS_E, /CS_D and /CS_DE to select the ROMs.


Patrick




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