Datasheet

 1996 Microchip Technology Inc. DS30412C-page 133
PIC17C4X
RLNCF Rotate Left f (no carry)
Syntax: [
label ] RLNCF f,d
Operands: 0 ≤ f ≤ 255
d ∈ [0,1]
Operation: f<n> → d<n+1>;
f<7> → d<0>
Status Affected: None
Encoding:
0010 001d ffff ffff
Description:
The contents of register 'f' are rotated
one bit to the left. If 'd' is 0 the result is
placed in WREG. If 'd' is 1 the result is
stored back in register 'f'.
Words: 1
Cycles: 1
Q Cycle Activity:
Q1 Q2 Q3 Q4
Decode Read
register 'f'
Execute Write to
destination
Example:
RLNCF REG, 1
Before Instruction
C=0
REG = 1110 1011
After Instruction
C=
REG = 1101 0111
register f
RRCF Rotate Right f through Carry
Syntax: [
label ] RRCF f,d
Operands: 0 ≤ f ≤ 255
d ∈ [0,1]
Operation: f<n> → d<n-1>;
f<0> → C;
C → d<7>
Status Affected: C
Encoding:
0001 100d ffff ffff
Description:
The contents of register 'f' are rotated
one bit to the right through the Carry
Flag. If 'd' is 0 the result is placed in
WREG. If 'd' is 1 the result is placed
back in register 'f'.
Words: 1
Cycles: 1
Q Cycle Activity:
Q1 Q2 Q3 Q4
Decode Read
register 'f'
Execute Write to
destination
Example:
RRCF REG1,0
Before Instruction
REG1 = 1110 0110
C=0
After Instruction
REG1 = 1110 0110
WREG = 0111 0011
C=0
C
register f