The following table shows the extended mnemonics for fixed-point arithmetic instructions for POWER and PowerPC. Except as noted, these extended mnemonics are for POWER and PowerPC and are in the com assembly mode.
| Fixed-Point Arithmetic Instruction Extended Mnemonics | ||
| Extended Mnemonic | Equivalent to | Meaning |
| subi rx, ry, value | addi rx, ry, -value | Subtract Immediate |
| subis rx, ry, value | addis rx, ry, -value | Subtract Immediate Shifted |
| subic[.] rx, ry, value | addic[.] rx, ry, -value | Subtract Immediate |
| subc[o][.] rx, ry, rz | subfc[o][.] rx, ry, rz | Subtract From Carrying |
| si[.] rt, ra, value | ai[.] rt, ra, -value | Subtract Immediate |
| sub[o][.] rx, ry, rz | subf[o][.] rx, ry, rz | Subtract From |
Note: The sub[o][.] extended mnemonic is for PowerPC, since its base mnemonic subf[o][.] is for PowerPC only.
Extended Instruction Mnemonics Overview.
Extended Mnemonics of Branch Instructions.
Extended Mnemonics of Condition Register Logical Instructions.
Extended Mnemonics of Fixed-Point Compare Instructions.
Extended Mnemonics of Fixed-Point Load Instructions.
Extended Mnemonics of Fixed-Point Logical Instructions.
Extended Mnemonics of Fixed-Point Trap Instructions.
Extended Mnemonics of Moving from or to Special-Purpose Registers.
Extended Mnemonics of Fixed-Point Rotate and Shift Instructions.
The addic or ai (Add Immediate Carrying) instruction, addic. or ai. (Add Immediate Carrying and Record) instruction.