A computer employs RAM chips of 1024 x 8 and ROM chips of 2048 x 4. The computer system needs 2K bytes of RAM, and 2K bytes of ROM and an interface unit with 256 registers each. A memory-mapped I/O configuration is used. The two higher -order bits of the address bus are assigned 00 for RAM, 01 for ROM, and 10 for interface.
a)How many RAM and ROM chips are needed?
b)How many lines of the address bus must be used to access Computer system memory?
How many of these lines will be common to all chips?
c) How many lines must be decoded for chip select? Specify the size of the decoder
d) Draw a memory-address map for the system and Give the address range in hexadecimal
for RAM, ROM
a)How many RAM and ROM chips are needed?
b)How many lines of the address bus must be used to access Computer system memory?
How many of these lines will be common to all chips?
c) How many lines must be decoded for chip select? Specify the size of the decoder
d) Draw a memory-address map for the system and Give the address range in hexadecimal
for RAM, ROM