PIC18F2331 Datasheet, PDF (291/396 Pages) Microchip Technology – 28/40/44-Pin Enhanced Flash Microcontrollers with nanoWatt Technology, High Performance PWM and A/D

PIC18F2331/2431/4331/4431
FIGURE 23-1:
GENERAL FORMAT FOR INSTRUCTIONS
Byte-oriented file register operations
Example Instruction
15
10 9 8 7
0
OPCODE d a
f (FILE #)
ADDWF MYREG, W, B
d = 0 for result destination to be WREG register
d = 1 for result destination to be file register (f)
a = 0 to force Access Bank
a = 1 for BSR to select bank
f = 8-bit file register address
Byte to Byte move operations (2-word)
15
12 11
OPCODE
15
12 11
1111
0
f (Source FILE #)
0
f (Destination FILE #)
MOVFF MYREG1, MYREG2
f = 12-bit file register address
Bit-oriented file register operations
15
12 11
98 7
0
OPCODE b (BIT #) a f (FILE #)
b = 3-bit position of bit in file register (f)
a = 0 to force Access Bank
a = 1 for BSR to select bank
f = 8-bit file register address
BSF MYREG, bit, B
Literal operations
15
87
0
OPCODE
k (literal)
k = 8-bit immediate value
MOVLW 0x7F
Control operations
CALL, GOTO and Branch operations
15
87
0
OPCODE
n<7:0> (literal)
15
12 11
1111
0
n<19:8> (literal)
n = 20-bit immediate value
15
87
0
OPCODE
S ^{n<7:0> (literal)}
15
12 11
0
n<19:8> (literal)
S = Fast bit
GOTO Label
CALL MYFUNC
15
11 10
0
OPCODE
n<10:0> (literal)
15
OPCODE
87
0
n<7:0> (literal)
BRA MYFUNC
BC MYFUNC
 2003 Microchip Technology Inc.
Preliminary
DS39616B-page 289