Superpico

A Raspberry Pi Pico-based Supervision Flash Cart

This is an RP2040-based flash cartridge for the Watara Supervision handheld. The RP2040 acts as the ROM chip of the cart. The cartridge can hold one game at a time.

Software Side

In order to load a game onto the cartridge, you first have a "convert" a ROM to a UF2 file.

Requirements:

Python
CMake
RP2040 C SDK installed and paths set up

Single ROM

Steps:

Use the bin2c.py script to convert a ROM file to a C-array. Usage: bin2c.py ROMFILE rom.h. Place the genereated rom.h file in the root of code directory, beside main.c.
Run make in the code directory.
Connect the Raspberry Pi Pico to the computer while holding down the BOOTSEL button.
Drag and drop the newly generated .uf2 file onto the Pico.

Batch Conversion

You can convert several ROMs at once by using the batch.py script. Steps:

Place the (extracted) ROMs into the batch/ROM folder.
Run the batch.py script.
After a short time, the generated .uf2 files should be in the uf2 folder.

Hardware Side

BOM

Component	Amount
Raspberry Pi Pico	1
74LVC245AT20	3

PCB

The PCB can be ordered using the Gerber files. A width of 1.0 mm or 1.2 mm should be chosen with ENIG surface.

Disclaimer

Use the files and/or schematics to build your own board at your own risk. This board works fine for me, but it's a simple hobby project, so there is no liability for errors in the schematics and/or board files. Use at your own risk.

zwenergy/Superpico