Datasheet

PIC17C7XX
DS30289C-page 222  1998-2013 Microchip Technology Inc.
RETURN Return from Subroutine
Syntax: [ label ] RETURN
Operands: None
Operation: TOS  PC;
Status Affected: None
Encoding:
0000 0000 0000 0010
Description:
Return from subroutine. The stack is
popped and the top of the stack (TOS)
is loaded into the program counter.
Words: 1
Cycles: 2
Q Cycle Activity:
Q1 Q2 Q3 Q4
Decode No
operation
Process
Data
POP PC
from stack
No
operation
No
operation
No
operation
No
operation
Example:
RETURN
After Interrupt
PC = TOS
RLCF Rotate Left f through Carry
Syntax: [ label ] RLCF f,d
Operands: 0  f  255
d  [0,1]
Operation: f<n>  d<n+1>;
f<7>  C;
C  d<0>
Status Affected: C
Encoding:
0001 101d ffff ffff
Description:
The contents of register 'f' are rotated
one bit to the left through the Carry
Flag. 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'
Process
Data
Write to
destination
Example:
RLCF REG,0
Before Instruction
REG = 1110 0110
C=0
After Instruction
REG = 1110 0110
WREG = 1100 1100
C=1
C
register f