| Abbreviation | Definition |
|---|---|
| IF | Interrupt Flag |
| IFR | Interrupt Flag Register |
| IFS | Internal Field Separator |
| IFU | Instruction Fetch Unit |
| IG | Insert Graphic |
| IIB | Ignore Interrupt and Branch |
| IIB | Integer Integer Byte |
| IL | Information Logical |
| IMAPS | International Microelectronic Assembly and Packaging Society |
| IMAPS | International Microelectronics Assembly and Packaging Society |
| IMUL | Integer Multiply, Signed |
| IN | Input Byte or Word |
| INC | Increment |
| INIT | Initialize |
| INO | In Not Of |
| INOP | InDirect No-OP |
| INR | INncRement |
| INS | Input String from Port |
| INSB | Input Byte String from Port |
| INSD | Input Doubleword String from Port |