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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 https://github.com/polpo/
by qiqitori 2y 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 https://github.com/polpo/rp2040-psram
- sitkack 2y agoThat 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-psram64_esp-psram64h_datasheet_en.pdf https://cdn-shop.adafruit.com/product-files/4677/4677_esp-ps...
- sitkack 2y agoUsing QSPI RAM with RP2040's SSI in read-write mode http://dmitry.gr/?r=06.%20Thoughts&proj=10.%20RomRam http://dmitry.gr/?r=06.%20Thoughts&proj=10.%20RomRam