| Byte-Oriented File Register Operations |
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| Mnemonic | Description | Function |
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| ADDWF | f,d | Add W and f | (d) := (W) + (f) | | ANDWF | f,d | AND W and f | (d) := (W) AND (f) | | CLRF | f | Clear f | (f) := 0 | | CLRW | | Clear W | W :=0 | | COMF | f,d | Complement | d := f NOT f | | DECF | f,d | Decrement | d := f - 1 | | DECFSZ | f,d | Decrement f, skip if zero | d := f - 1, skip if 0 | | INCF | f,d | Increment f | d := f + 1 | | INCFSZ | f,d | Increment f, skip if zero | d := f + 1, skip if 0 | | IORWF | f,d | Inclusive OR W and f | d := W OR f | | MOVF | f,d | Move f | d := f | | MOVWF | f | Move W to f | f := W | | NOP | | No operation | | | RLF | f,d | Rotate left f | | | RRF | f,d | Rotate right f | | | SUBWF | f,d | Subtract W from f | d := f - W | | SWAPF | f,d | Swap halves f | f(0:3) ? f(4:7) ? d | | XORWF | f,d | Exclusive OR W and f | d := W .XOR. f | | Bit-Oriented File Register Operations |
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| Mnemonic | Description | Function |
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| BCF | f,b | Bit b in register f is cleared | f(b) := 0 | | BSF | f,b | Bit b in register f is set | f(b) := 1 | | BTFSC | f,b | test bit b of register f, skip next instruction if clear | skip if f(b) = 0 | | BTFSS | f,b | test bit b of register f, skip next instruction if set | skip if f(b) = 1 | | Literal and Control Operations |
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| Mnemonic | Description | Function |
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| ADDLW | kk | Add literal to W | (W) := kk + (W) | | ANDLW | kk | AND literal and W | (W) := kk AND (W) | | CALL | kkk | Call subroutine | TOS := PC + 1
PC := kk
PC<12:11> := (PCLATH<4:3>) | | CLRWDT | | Clear watchdog timer | WDT (and Prescaler if assigned) := 0 | | GOTO | kkk | Goto address (k is nine bits) | PC(9 bits) := kkk | | IORLW | kk | Incl. OR literal and W | WREG := kk OR WREG | | MOVLW | kk | Move Literal to W | WREG := kk | | OPTION | | Load OPTION register (1) | OPTION Register := WREG | | RETFIE | | Return from Interrupt | PC := TOS, GIE := 1 | | RETLW | kk | Return with literal in W | WREG := kk, PC := TOS | | RETURN | | Return from subroutine | PC := TOS | | SLEEP | | Go into Standby Mode | WDT := 0, stop oscillator | | SUBLW | kk | Subtract W from literal | WREG := kk - WREG | | TRIS | r | Tristate port r (1) | I/O control reg r := WREG | | XORLW | kk | Exclusive OR literal and W | WREG := kk XOR WREG |
| f = rgister file address (0x00 to 0x7F)
W = working register (accumulator)
b = bit address within an 8-bit file register
k = literal field, constant data or label
x = don't care location
d = destination select
- d = 0: store result in W
- d = 1 : store result in f
PC = program counter
TO = time-out bit
PD = power-down bit
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