A-class instructions
integer ALU; compare; multimedia ALU
| Type | Instructions | Category |
| A1 |
Add; Sub (Register) And; Andcm; Or; Xor |
integer ALU |
| A2 | Shladd | integer ALU |
| A3 |
Sub (immediate) And; Andcm; Or; Xor |
integer ALU |
| A4 | Adds | integer ALU |
| A5 | Addl | integer ALU |
| A6 | Compare(register) | integer compare |
| A7 | compare to zero | integer compare |
| A8 | Compare (immediate) | integer compare |
| A9 | Padd; Psub; Pavg; Pcmp | multimedia |
| A10 | Pshladd; Pshradd | multimedia |