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in CO and Architecture retagged by
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given that it is 16bit CPU ==> 16 bits at a time access.

Memory = 64K word = 16 bits required ===> one memory access can be sufficient to know the value in direct mode

Indirect means, it requires 2 Memory references.

Instruction size = 64 bits ===> 4 memory references required

So, memory references = Indirect + Direct + Direct = 2+1+1 = 4 ( without fetch )

memory references = Fetch + Indirect + Direct + Direct = 4+2+1+1 = 8 ( with fetch )

as per me, data means references of variables but not the code (i.e., not count the accessing instructions )

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@Chaitrasj 4 memory references for whole instruction to fetch.. complete explanation is already provided by Shaik sir.

 

 

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