I found a listing at BUY.COM for a 512KB SRAM card
(part #STI-SRAM/512) for about $20 less than a
comparable Pretec card. But I can't seem to find any
technical specifications on the card to match with
Alesis's stated requirements for use with the QS (i.e.
type 1 card with 200ns or faster access time). Does
anybody know if this card is compatible? Thanks.

Alex