It’s been a few weeks since I’ve posted. Life intervenes occasionally. This post is for a Multiply (Fullword) instruction which has an RXY-a instruction format providing a long displacement. This instruction is well worth a look, if you consistently reach for (M) when multiplying fullwords. You can find the short article for MFY here.
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Review an Instruction: MHIReview an Instruction: MHI
For small, binary integer multiplications, you can use MH or MHI. With MHI, the second operand is stored as an ...