"IBM Mainframe Assembler List" <[email protected]> wrote on
02/04/2022 12:11:53 PM:
> Instruction 3 doesn't affect R0, so it still has the 4 leftmost bits
> from instruction 2. Instruction 4 removes the left two bits, leaving
> only the right two bits.
In that case, those are the wrong two bits that would be needed.
The right two bits were shifted into R1 so it is the left two bits that
are needed. Correct?
Sincerely,
Dave Clark
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