Microchip Technology AC244049 데이터 시트
© 2009 Microchip Technology Inc.
DS41341E-page 205
PIC16F72X/PIC16LF72X
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 (2’s complement method)
W register from register ‘f’. If ‘d’ is
‘0’, the result is stored in the W
register. If ‘d’ is ‘1’, the result is
stored back in register ‘f.
W register from register ‘f’. If ‘d’ is
‘0’, the result is stored in the W
register. If ‘d’ is ‘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’ is
‘0’, the result is placed in the W
register. If ‘d’ is ‘1’, the result is
placed in register ‘f’.
register ‘f’ are exchanged. If ‘d’ is
‘0’, the result is placed in the W
register. If ‘d’ is ‘1’, the result is
placed in register ‘f’.
C = 0
W
> f
C = 1
W
≤ f
DC = 0
W<3:0>
> f<3:0>
DC = 1
W<3:0>
≤ f<3:0>
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.
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’ is
‘0’, the result is stored in the W
register. If ‘d’ is ‘1’, the result is
stored back in register ‘f’.
W register with register ‘f’. If ‘d’ is
‘0’, the result is stored in the W
register. If ‘d’ is ‘1’, the result is
stored back in register ‘f’.