More than just memory

• Hardware devices other than memory can be connected in this manner.

• Sensor devices or other chips can be attached to the address/data busses as long as they are addressed at a different location than the memory.

  • If the microprocessor can address 1Megabyte, and
  • ROM and RAM take up the first 64Kbytes.
  • Then other devices can be allocated above this.

• Such devices are called “memory mapped”