Question: Opcode / instruction design: A computer has 2 2 - bit instructions and 1 6 - bit memory addresses. Suppose that there are no register

Opcode

/

instruction design:

A computer has

22 -

bit instructions and

16 -

bit memory addresses. Suppose that there are no register

-

based opcodes possible just like MARIE; in other words, there are only memory addressing based opcodes are possible. Hence, there are no variable size opcodes, and therefore, there are no escape codes either.

How many instructions can be formulated in this ISA?

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