Glossary Nop Register Notation

<title>Other Notation : Nop-Register-Notation</title>

Nop-Register-Notation

A register name (AX, BX, or CX) surrounded by question marks refers to that register being used by default when the instruction in question is being executed, but if the instruction is followed by a no-operation (nop) instruction, the nop will alter the register used. A nop-A instruction indicates AX, nop-B is BX, and nop-C is CX.