[sdiy] SRAM like 5101

[jhaible]

> I don't have any PS schematics, but I'd expect the memory to be wired
> similarly to the Trident: ADC output into RAM DI, and RAM DO into DAC.

What you describe is what the PS-3200 is like.
However, the Trident is different: *There* DO and DI are connected
together.

> I'm not even sure if there's a CPU at all in the PS's. Possibly a cute
> one for KB scanning.

No uC.
And no keyboard scanning either. 48 keys, 48 synthesizer voices.

JH.