From: "Steve Thompson" <[email protected]>
Sent: Thursday, February 23, 2017 11:55 PM
What does "immediate" mean to you?
In this case, it means immediately available within the
instruction itself.
Replication would then expand outside of the instruction
Why? It is an Immediate instruction.
and into the instruction stream. That would then cause the next byte,
beyond the instruction, to be an OPCODE by instruction fetch (IF)
using the PSW's Instruction counter (IC).
When an instruction is fetched, the IC is advanced by the length
of the instruction -- which is based on the OP code (it defines
the length of the instruction).
Accordingly, there is nothing in the instruction to tell IF that
this instruction has a different length for updating the IC.
It would help to read the Principles of Operations manual for
more than just the instructions that you want to use.
Understanding how the machine actually works can keep you out of
trouble and make use of nuances at the same time.
Regards,
Steve Thompson
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