Comment by qiqitori
12 days ago
The PicoGUS uses PIO to implement a PSRAM interface in order to store 1 MB of audio sample data: https://github.com/polpo/rp2040-psram
12 days ago
The PicoGUS uses PIO to implement a PSRAM interface in order to store 1 MB of audio sample data: https://github.com/polpo/rp2040-psram
That is cool, I'll give it a go. It could be made workable for something like a JIT or interpreter (like the MicroMac). Could it be added to the RP2040 address space and used as a native load store target?
The neat thing about the ESP32 chips is you can extend their internal memory with external SPI PSRAM chips.
https://cdn-shop.adafruit.com/product-files/4677/4677_esp-ps...
Using QSPI RAM with RP2040's SSI in read-write mode http://dmitry.gr/?r=06.%20Thoughts&proj=10.%20RomRam