64 MB PSRAM module using 16 pins? --> 96 MB w/16 pins or 24 MB w/8 pins
Thinking about a memory module, mostly for the @Wuerfel_21 Sega Genesis emulator at this time.
Would like it to connect to the side of a P2 Eval board.
Problem is that side of P2 only has 16 pins and to do it like the Parallax P2 module takes 18 pins.
So, wondering if can share an 8-bit bus between four different 16 MB pairs of chips.
Was looking at the @rogloh driver and he seems to suggest bus sharing is possible.
So, would use 8 pins for the bus and 8-pins for CS and CLK for each of four pairs.
I think it would work, but not sure if would be fast enough for Sega Genesis emulation...
Update: After input from forum, going to a 96 MB setup with six banks with two separate clocks for lower and upper nibble. Driver going to be complex. But, also doing a simple, 24 MB setup with just 8 pins and 3 chips. This can use existing driver and support Sega Genesis emulation