Hardware Modifications TN20K

JTAG programming via PiPico

The latest FPGA-Companion has the ability to programm the FPGA from the PiPico.
build target: MSP20K (MiSTeryShieldPico)

Cores can be selected by hitting shift + F12.

The following wiring is required:

The M0S Dock can be used to program the FPGA by uploading a core bitstream via JTAG.
build target: m0sdock (MiSTeryShield)
-> Readme / wiring:

Pin 53 on the Tang Nano 20K is reserved for drive sounds played back on a passive Buzzer.

Do not connect a Buzzer directly to the pin! A small circuit is required!

For a Piezo Buzzer:

For a Magnetic Buzzer:

Ready to use / circuit on board:

MiSTle - FPGA Retro Computing Framework