Rotate Right f through Carry
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 the W register. If ‘d’ is ‘1’, the result is placed back in register ‘f’.
[the_ad id=”3059″]Syntax:
[ label ] RRF f,d
Operation:
Operands:
- f is from 0 to 127
- d is either 0 or 1
Status Affected: C
Example:
RRF REG,0
Before instruction:
REG = 0x02 W = 0x04
After instruction:
REG = 0x02 W = 0x01[the_ad id=”3059″]
Example:
RRF REG,1
Before instruction:
REG = 0x01 W = 0x04
After instruction:
REG = 0x00 W = 0x04
