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Study Stuff for MCA Examinations - NIMCET
Study Stuff for MCA Examinations - NIMCET
Previous Year Question (PYQs)
A CPU uses a $16$-bit instruction format. If $4$ bits are used for the opcode and the remaining bits specify a single memory address, what is the maximum addressable memory space for this instruction format?
Solution
Total instruction size is:
$16$ bits
Opcode uses:
$4$ bits
So, remaining bits for memory address are:
$16-4=12$ bits
With $12$ address bits, maximum addressable memory locations are:
$2^{12}=4096$
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