| Abbreviation | Definition |
|---|---|
| PS | Program Stream |
| PSH | Push |
| PSO | Punch System Operator |
| PSP | Program Segment Pointer |
| PSW | Process Status Word |
| PUL | Pointer To Unsigned Long |
| PUMA | Programmable Universal Machine For Assembly |
| PUS | Pointer To Unsigned Short |
| PUSH | Push Word onto Stack |
| PUSHA | Push All |
| PUSHA | Push All General Purpose Registers |
| PUSHAD | Push All Double |
| PUSHF | Push Flags onto Stack |
| PUSHFD | Push 32-Bit Flags Register |
| PW | Preserve Word |
| Q | Query |
| QADD | Quad word ADD (256-bit addition) |
| QF | Quit Function |
| QI | Quit If |
| QL | Quick Loading |