The operating mode determines memory mapping and whether memory is addressed on- or off-chip. Memory locations for on-chip resources are the same for both expanded multiplexed and single-chip modes. Control bits in the CONFIG register allow EPROM and EEPROM to be disabled from the memory map. The 512-byte RAM is mapped to $0000 after reset. It can be placed at any other 4K boundary ($x000) by writing an appropriate value to the INIT register. The 64-byte register block is mapped to $1000 after reset and can also be placed at any 4K boundary($x000) by writing an appropriate value to the INIT register. The Table for MCU register and control bit assignments can be looked up from the Technical Data Manual.