Re: PicoGUS: ISA sound card emulator with Raspberry Pi Pico (Gravis Ultrasound, AdLib, MPU-401, Tandy, CMS)
Posted on 2024-04-02, 18:28
TLDR: The issue is fixed, it was a solder bridge on U2, I checked for bridges 100x, but I clearly missed one. So I did check the pins related to DMA 2, there were no shorts as expected, they are not even connected... So just for good measure I cleaned the board again with ipa and checked for bridges …