The memory unit of a computer has 256K words of 32 bits each. The computer has an instruction format with 4 fields: an opcode field; a mode field to specify 1 of 7 addressing modes; a register address field to specify one of 60 registers; and a memory address field. Assume an instruction is 32 bits long. Answer the following: a. How large must the mode field be? b. How large must the register field be? c. How large must the address field be? d. How large is the opcode field?
The memory unit of a computer has 256K words of 32 bits each. The computer has an instruction format with 4 fields: an opcode field; a mode field to specify 1 of 7 addressing modes; a register address field to specify one of 60 registers; and a memory address field. Assume an instruction is 32 bits long. Answer the following: a. How large must the mode field be? b. How large must the register field be? c. How large must the address field be? d. How large is the opcode field?
Chapter4: Processor Technology And Architecture
Section: Chapter Questions
Problem 2PE: If a microprocessor has a cycle time of 0.5 nanoseconds, what’s the processor clock rate? If the...
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The memory unit of a computer has 256K words of 32 bits each. The computer has an
instruction format with 4 fields: an opcode field; a mode field to specify 1 of 7
addressing modes; a register address field to specify one of 60 registers; and a memory
address field. Assume an instruction is 32 bits long. Answer the following:
a. How large must the mode field be?
b. How large must the register field be?
c. How large must the address field be?
d. How large is the opcode field?
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