A computer employs RAM chips of 256 8 and ROM chips of 1024 8. The

Question:

A computer employs RAM chips of 256 × 8 and ROM chips of 1024 × 8. The computer system needs 2K bytes of RAM. 4K bytes of ROM, and tour Interface units, each with tour registers A memory-mapped I/O configuration is used. The two highest-order bits of the address bus are assigned 00 for RAM. 01 for ROM and 10 for interface registers.
a. How many RAM and ROM chips are needed?
b. Draw a memory-address map for the system.
c. Give the address range in hexadecimal for RAM. ROM. and interface.