Thanks for posting this! I'm the author of the project and I've seen it pop up here on HN a few times when searching but I haven't seen it make it the front page until now.
It's been really fun pushing the limits of the RP2040 microcontroller and learning how to use its PIO capabilities has been eye opening. I've created PIO code to handle the ISA bus and interface with SPI-based PSRAM at higher speed than I could with the RP2040's built-in SPI peripheral.
It's been really fun pushing the limits of the RP2040 microcontroller and learning how to use its PIO capabilities has been eye opening. I've created PIO code to handle the ISA bus and interface with SPI-based PSRAM at higher speed than I could with the RP2040's built-in SPI peripheral.