PSRAM on the PicoCalc

[shtirlic]

JFYI, I am trying to get QSPI (QPI) working on PicoCalc

NuttX RTOS on PicoCalc

JFYI, I managed to get QSPI working on PSRAM by modified version of rp2040-psram project, so we will get the speed bump for PSRAM. I will push my branch and make draft pull for the upstream in future. The only thing that not working right now is variable bytes write/reads, reads/writes up to 128bits is working now. Update: Initially wrote about SD card, but then remembered it’s for PSRAM Here is the stats: All tests done on on RISC-V core Full chart without 8bit test for 150mhz sysclo…