Download Samsung YP-55H Specifications

PIC16F8X
SUBWF
Subtract W from f
SWAPF
Swap Nibbles in f
Syntax:
[ label ]
Syntax:
[ label ] SWAPF f,d
Operands:
0 ≤ f ≤ 127
d ∈ [0,1]
Operands:
0 ≤ f ≤ 127
d ∈ [0,1]
Operation:
(f) - (W) → (destination)
Operation:
(f<3:0>) → (destination<7:4>),
(f<7:4>) → (destination<3:0>)
Status Affected:
None
SUBWF f,d
Status Affected: C, DC, Z
Encoding:
Description:
00
1
Cycles:
1
Example 1:
dfff
ffff
Subtract (2’s complement method) W register from register 'f'. If 'd' is 0 the result is
stored in the W register. If 'd' is 1 the
result is stored back in register 'f'.
Words:
Q Cycle Activity:
0010
Q1
Q2
Q3
Q4
Decode
Read
register 'f'
Process
data
Write to
destination
SUBWF
Description:
00
Words:
1
Cycles:
1
Q Cycle Activity:
Example 2:
Example
=
=
=
=
Q1
Q2
Q3
Q4
Read
register 'f'
Process
data
Write to
destination
SWAPF REG,
=
=
=
=
=
=
=
=
Example 3:
=
=
=
=
REG1
=
=
=
=
 1998 Microchip Technology Inc.
=
=
=
=
0xA5
=
=
0xA5
0x5A
1
2
1; result is positive
0
2
2
?
?
TRIS
Load TRIS Register
Syntax:
[label]
Operands:
5≤f≤7
Operation:
(W) → TRIS register f;
TRIS
f
Status Affected: None
0
2
1; result is zero
1
1
2
?
?
After Instruction
REG1
W
C
Z
=
After Instruction
Encoding:
0xFF
2
0; result is negative
0
00
0000
0110
0fff
Description:
The instruction is supported for code
compatibility with the PIC16C5X products. Since TRIS registers are readable and writable, the user can directly
address them.
Words:
1
Cycles:
1
Before Instruction
REG1
W
C
Z
0
REG1
W
After Instruction
REG1
W
C
Z
ffff
Before Instruction
3
2
?
?
Before Instruction
REG1
W
C
Z
dfff
Decode
After Instruction
REG1
W
C
Z
1110
The upper and lower nibbles of register
'f' are exchanged. If 'd' is 0 the result is
placed in W register. If 'd' is 1 the result
is placed in register 'f'.
REG1,1
Before Instruction
REG1
W
C
Z
Encoding:
Example
To maintain upward compatibility
with future PIC16CXX products,
do not use this instruction.
DS30430C-page 67