Datasheet

PIC17C4X
DS30412C-page 114  1996 Microchip Technology Inc.
ANDWF AND WREG with f
Syntax: [
label ] ANDWF f,d
Operands: 0 ≤ f ≤ 255
d ∈ [0,1]
Operation: (WREG) .AND. (f) → (dest)
Status Affected: Z
Encoding:
0000 101d ffff ffff
Description:
The contents of WREG are AND’ed with
register 'f'. If 'd' is 0 the result is stored
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:
ANDWF REG, 1
Before Instruction
WREG = 0x17
REG = 0xC2
After Instruction
WREG = 0x17
REG = 0x02
BCF Bit Clear f
Syntax: [
label ] BCF f,b
Operands: 0 ≤ f ≤ 255
0 ≤ b ≤ 7
Operation: 0 → (f<b>)
Status Affected: None
Encoding:
1000 1bbb ffff ffff
Description:
Bit 'b' in register 'f' is cleared.
Words: 1
Cycles: 1
Q Cycle Activity:
Q1 Q2 Q3 Q4
Decode Read
register 'f'
Execute Write
register 'f'
Example:
BCF FLAG_REG, 7
Before Instruction
FLAG_REG = 0xC7
After Instruction
FLAG_REG = 0x47