tcdev (./5) :

The NGCD has a built-in memory card (no BRAM!) which is accessed in the same way as on the MVS/AES, you can use the same memorycard-code for all three machines.

Ah thanks. I'll have a closer look before the first beta release!

I've updated the high score load/save; MVS uses BRAM, all platforms use memory card routines. On MVS memory card takes precedence over BRAM, but it saves to both.