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 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
On 02/22/2017 04:18 PM, Melvyn Maltz wrote:
Immediate operands won't accept a duplication factor...why not ?
Can't find a reason in the HLASM manual
Try these...
CFI R1,4X'FF'
CFI R1,X'FFFFFFFF'
CFI R1,-1
AHI R1,2X'FF'
AHI R1,X'FFFF'
AHI R1,-1
Melvyn Maltz
