Which PSRAM chips are compatible?

[probonopd]

https://github.com/polpo/rp2040-psram talks about

• apmemory APS6404L
• Lyontek LY68L6400
• IPUS IPS6404
• Espressif ESP-PSRAM64H

Is it expected that all of these should work with the wip-psram branch of pico-mac as well?

[probonopd]

@evansm7 which one(s) are you using? I'd like to order some... Thanks!

[evansm7]

From #7 , I’m prototyping with a Pimoroni PGA2350. Without reading all the datasheets of that list of chips one can’t say whether the parameters in the init code I got from micropython will work. Probably, but not certain. (I was sort of waiting for an SDK update to include some generic/adaptive PSRAM init routines but no….)