Re: Help identify cards

[david@wraith.cs.uow.edu.au (David E A Wilson)]

biglous@aol.com (BigLouS) writes:
>The Saturn card came with software that enabled it to be used as a ramdisk
>and yes it was designed to hold 128K. Back before hard drives for the
>Apple II series this was the best you could do as far as fast disk access
>was concerned.
>I've heard of this card but I don't know what scheme it uses to add
>memory.

If it is the same as the cards I have, it uses the duplicated i/o addresses
to bank select 8 logical 16KB language cards.

c0m0-c0m3	as per normal language card
c0m4		bank 0 (not sure if it needs a write or if a read works)
c0m5		bank 1
c0m6		bank 2
c0m7		bank 3
c0m8-c0mb	as per normal language card
c0mc		bank 4
c0md		bank 5
c0me		bank 6
c0mf		bank 7

where m=8+slot (normally 8 if the card has replaced the language card in
slot 0).

My clone cards have 3 LEDs to indicate the bank # and a 4th LED to
indicate that reads come from the RAM and not the ROM.
-- 
David Wilson	Dept CompSci Uni Wollongong Australia	david@cs.uow.edu.au