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PIC16F631 Datasheet, PDF (223/294 Pages) Microchip Technology – 20-Pin Flash-Based, 8-Bit CMOS Microcontrollers with nanoWatt Technology | |||
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PIC16F631/677/685/687/689/690
SUBWF
Subtract W from f
Syntax:
[ label ] SUBWF f,d
Operands:
0 ⤠f ⤠127
d â [0,1]
Operation:
(f) - (W) â (destination)
Status Affected: C, DC, Z
Description:
Subtract (2âs complement method)
W register from register âfâ. If âdâ is
â0â, the result is stored in the W
register. If âdâ is â1â, the result is
stored back in register âfâ.
C=0
C=1
DC = 0
DC = 1
W>f
Wâ¤f
W<3:0> > f<3:0>
W<3:0> ⤠f<3:0>
SWAPF
Swap Nibbles in f
Syntax:
Operands:
Operation:
Status Affected:
Description:
[ label ] SWAPF f,d
0 ⤠f ⤠127
d â [0,1]
(f<3:0>) â (destination<7:4>),
(f<7:4>) â (destination<3:0>)
None
The upper and lower nibbles of
register âfâ are exchanged. If âdâ is
â0â, the result is placed in the W
register. If âdâ is â1â, the result is
placed in register âfâ.
XORLW
Syntax:
Operands:
Operation:
Status Affected:
Description:
Exclusive OR literal with W
[ label ] XORLW k
0 ⤠k ⤠255
(W) .XOR. k â (W)
Z
The contents of the W register
are XORâed with the eight-bit
literal âkâ. The result is placed in
the W register.
XORWF
Syntax:
Operands:
Operation:
Status Affected:
Description:
Exclusive OR W with f
[ label ] XORWF f,d
0 ⤠f ⤠127
d â [0,1]
(W) .XOR. (f) â (destination)
Z
Exclusive OR the contents of the
W register with register âfâ. If âdâ is
â0â, the result is stored in the W
register. If âdâ is â1â, the result is
stored back in register âfâ.
© 2007 Microchip Technology Inc.
DS41262D-page 221
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