PIC18CXX2
FIGURE 19-1: GENERAL FORMAT FOR INSTRUCTIONS
Byte-oriented file register operations
Example Instruction
15
10
9
d
8
7
0
OPCODE
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
0
0
OPCODE
f (Source FILE #)
MOVFF MYREG1, MYREG2
15
12 11
1111
f (Destination FILE #)
f = 12-bit file register address
Bit-oriented file register operations
15 12 11
9
8
7
0
OPCODE b (BIT #)
a
f (FILE #)
BSF MYREG, bit, B
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
Literal operations
15
8
7
0
OPCODE
k (literal)
MOVLW 0x7F
k = 8-bit immediate value
Control operations
CALL, GOTO and Branch operations
15
8 7
0
0
OPCODE
12 11
n<7:0> (literal)
GOTO Label
15
1111
n<19:8> (literal)
n = 20-bit immediate value
8 7
15
15
0
0
CALL MYFUNC
OPCODE
12 11
n<7:0> (literal)
S
n<19:8> (literal)
S = Fast bit
11 10
15
0
0
BRA MYFUNC
BC MYFUNC
OPCODE
n<10:0> (literal)
15
OPCODE
8 7
n<7:0> (literal)
7/99 Microchip Technology Inc.
Preliminary
DS39026B-page 193
MICROCHIP [ MICROCHIP ]
