Difference between register reference and memory reference instructions
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Register reference instruction includes reference to an inner register as fraction of the op-code whereas memory reference instruction has an address as part of the instruction which is not a part of op-code but separate from it.
The format of memory reference is seven 3-bit op-codes followed by 12-bit memory address.
The format of register reference has 01112 is followed by 12-bit register instruction.
The format of memory reference is seven 3-bit op-codes followed by 12-bit memory address.
The format of register reference has 01112 is followed by 12-bit register instruction.
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