ocr: MEMORY ARCHITECTURE (Continued) C128 mode is achieved at system reset, and is controlled by a bit in the MMU contgurationregister (See MMU Circuit Theory, page 20). In C128mode, the MMU asserts itself in the C128 memory map at $FFO0 and in the I/O space starting at $D500. Use of MMU registers, located at $FF00, allows memory management without actually having the 1/O block banked in at the time and with a minimum loss of contiguous RAM. The MMU is removed from the memory map in C64 mode but is still used by hardware to manage memory. The ROMS in C64 mode, bothinternally and externally, look ju ...
