PIC17C7XX Datasheet, PDF (201/328 Pages) Microchip Technology – High-Performance 8-Bit CMOS EPROM Microcontrollers with 10-bit A/D

PIC17C7XX
ADDWFC
ADD WREG and Carry bit to f
Syntax:
[ label ] ADDWFC f,d
Operands:
0 ≤ f ≤ 255
d ∈ [0,1]
Operation:
(WREG) + (f) + C → (dest)
Status Affected: OV, C, DC, Z
Encoding:
0001 000d ffff ffff
Description:
Add WREG, the Carry Flag and data
memory location 'f'. If 'd' is 0, the result is
placed in WREG. If 'd' is 1, the result is
placed in data memory location 'f'.
Words:
1
Cycles:
1
Q Cycle Activity:
Q1
Decode
Q2
Read
register 'f'
Q3
Process
Data
Q4
Write to
destination
Example:
ADDWFC
Before Instruction
Carry bit = 1
REG = 0x02
WREG = 0x4D
After Instruction
Carry bit =
REG =
WREG =
0
0x02
0x50
REG 0
ANDLW
And Literal with WREG
Syntax:
[ label ] ANDLW k
Operands:
0 ≤ k ≤ 255
Operation:
(WREG) .AND. (k) → (WREG)
Status Affected: Z
Encoding:
1011 0101 kkkk kkkk
Description:
The contents of WREG are AND’ed with
the 8-bit literal 'k'. The result is placed in
WREG.
Words:
1
Cycles:
1
Q Cycle Activity:
Q1
Q2
Decode
Read literal
'k'
Q3
Process
Data
Q4
Write to
WREG
Example:
ANDLW
Before Instruction
WREG = 0xA3
After Instruction
WREG = 0x03
0x5F
© 1998 Microchip Technology Inc.
DS30289A-page 201