Datasheet

PIC16F87/88
DS30487D-page 156  2002-2013 Microchip Technology Inc.
SUBLW Subtract W from Literal
Syntax: [ label ] SUBLW k
Operands: 0 k 255
Operation: k – (W) W)
Status Affected: C, DC, Z
Description: The W register is subtracted (two’s
complement method) from the
eight-bit literal ‘k’. The result is
placed in the W register.
SUBWF Subtract W from f
Syntax: [ label ] SUBWF f,d
Operands: 0 f 127
d  [0,1]
Operation: (f) – (W) destination)
Status Affected: C, DC, Z
Description: Subtract (two’s complement
method) W register from register ‘f’.
If ‘d’ = 0, the result is stored in the
W register. If ‘d’ = 1, the result is
stored back in register ‘f’.
SWAPF Swap Nibbles in f
Syntax: [ label ] SWAPF f,d
Operands: 0  f  127
d  [0,1]
Operation: (f<3:0>)  (destination<7:4>),
(f<7:4>)  (destination<3:0>)
Status Affected: None
Description: The upper and lower nibbles of
register ‘f’ are exchanged. If
‘d’ = 0, the result is placed in W
register. If ‘d’ = 1, the result is
placed in register ‘f’.
XORLW Exclusive OR Literal with W
Syntax: [ label ]XORLW k
Operands: 0 k 255
Operation: (W) .XOR. k W)
Status Affected: Z
Description: The contents of the W register
are XOR’ed with the eight-bit
literal ‘k’. The result is placed in
the W register.
XORWF Exclusive OR W with f
Syntax: [ label ] XORWF f,d
Operands: 0  f  127
d  [0,1]
Operation: (W) .XOR. (f) destination)
Status Affected: Z
Description: Exclusive OR the contents of the
W register with register ‘f’. If
‘d’ = 0, the result is stored in the
W register. If ‘d’ = 1, the result is
stored back in register ‘f’.