This zilog's hack which enable MB02 memory paging scheme on the divIDE:

- change firmware in R_GAL to the R''_GAL
- patch jumps in BSROM and BSDOS banks (on the address #3ccc)
- open JP2/E
- OUT 227,66 or OUT 227,67 - Starting this miracle
- Move BSDOS a BSROM to the divIDE. And it's all.

Bit description for port address 227:
OUT 227,0 - BANK0 write disable
OUT 227,1 - BANK1 write disable
OUT 227,64 - BANK0 write enable
OUT 227,65 - BANK1 write enable