

The edge connector actually supports up to 19 address bits (the MR signal is used for A18 on some PCM ROM cards) and I've built jumpers onto the card that will switch A15 thru A18 between the slide switches and the edge connector, allowing any configuration between 16 banks of 256kbit and one bank of 4mbit. We only ship the 16x256 and 8x512 variants since that's the only RAM card sizes used by synths, but I have deliberately made the card hackable that way if anyone wants to dabble in custom PCM cards
