Changes
/* Technical */
* Accessing a 64K expansion (or the first 64K of a bigger expansion) is compatible to the 128K in the CPC6128
* Although, for real For full CPC6128 compatibility one may need some patches (eg. CP/M Plus refuses will stiff refuse to work without the 6128s BASIC version) (; because it "detects" the 128K by checking the BASIC ROMs versionnumber)
Expansions bigger than 64K combine the CPC6128-style mapping with some formerly unused chips in the fourth Gate Array register:
