Instruction set
RRF | Rotate Right f through Carry |
Form |
[label] RRF f, d
( label is omitable, shows SPACE code ) |
Operands |
f : Register file addesss ( 00(00h) to 127(7Fh) )
d : Destination select ( 0 or 1 ) |
Operation |
It moves the contents of the f register to the 1-bit right including the carry bit.
d = 0 : store result in W
d = 1 : store result in f |  |
Flag | It sets the least significant bit of the f register to C. |
Instruction
cycles | 1 cycle |
SLEEP | Go into stanby mode |
Form |
[label] SLEEP
( label is omitable, shows SPACE code ) |
Operands | None |
Operation |
It stops a clock generator and it makes a processor a standby mode.
It resets a watchdog timer.
When using the prescaler for the watchdog timer, it resets the prescaler, too. |  |
Flag | It sets 1 to TO and it sets 0 to the PD. |
Instruction
cycles | 1 cycle |
SUBLW | Subtract W from literal |
Form |
[label] SUBLW k
( label is omitable, shows SPACE code ) |
Operands | k : literal field ( 00(00h) to 255(FFh) ) |
Operation |
It executes the subtraction of the contents of the W register from the literal data.
In the actual calculation, it changes the content of the W register by the 2's complement and it adds with the literal data.
(EX)  |  |
Flag |
C=1, Z=0 ( Result is positive )
C=1, Z=1 ( Result is zero )
C=0, Z=0 ( Result is negative ) |
Instruction
cycles | 1 cycle |
SUBWF | Subtract W from f |
Form |
[label] SUBWF f, d
( label is omitable, shows SPACE code ) |
Operands |
f : Register file addesss ( 00(00h) to 127(7Fh) )
d : Destination select ( 0 or 1 ) |
Operation |
It executes the subtraction of the contents of the W register from the f register.
d = 0 : store result in W
d = 1 : store result in f
In the actual calculation, it changes the content of the W register by the 2's complement and it adds with the contents of the f register.
(EX)  |  |
Flag |
C=1, Z=0 ( Result is positive )
C=1, Z=1 ( Result is zero )
C=0, Z=0 ( Result is negative ) |
Instruction
cycles | 1 cycle |
Next instructions |