Note: According to Luis the other board on pcbway is obsolete!

This cartridge allows any MSX computer to host a Sipeed Tang Nano 20K. The current fpga core implements:

MicroSD Nextor 2.1 Drive

FM OPLL + MSX Music ROM

2MB Super Mega RAM SCC+

4MB Memory Mapper

Sega Master System VDP + PSG to allow running SMS roms from SofaRun (Franky HDMI)

The Super Mega RAM SCC+

The Super Mega RAM SCC+ is a different ACVS-like MegaRam that support different mappers:

Konami4 (2MB)

Konami5 SCC+ (512KB)

ASCII8 (2MB)

ASCII16 (2MB)

Use the utility SMRAM.COM to allow using different mappers as well activating the SCC+, otherwise it will just work like an ordinary MegaRAM 2MB.

Full BOM and board details can be found at

https://github.com/lfantoniosi/WonderTANG/tree/main