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PIC17C4X
DS30412C-page 126
1996 Microchip Technology Inc.
MOVFP
Move f to p
Syntax:
[
label]
MOVFP f,p
Operands:
0
≤ f ≤ 255
0
≤ p ≤ 31
Operation:
(f)
→ (p)
Status Affected:
None
Encoding:
011p
pppp
ffff
Description:
Move data from data memory location 'f'
to data memory location 'p'. Location 'f'
can be anywhere in the 256 word data
space (00h to FFh) while 'p' can be 00h
to 1Fh.
Either ’p' or 'f' can be WREG (a useful
special situation).
MOVFP
is particularly useful for transfer-
ring a data memory location to a periph-
eral register (such as the transmit buffer
or an I/O port). Both 'f' and 'p' can be
indirectly addressed.
Words:
1
Cycles:
1
Q Cycle Activity:
Q1
Q2
Q3
Q4
Decode
Read
register 'f'
Execute
Write
register 'p'
Example:
MOVFP
REG1, REG2
Before Instruction
REG1
=
0x33,
REG2
=
0x11
After Instruction
REG1
=
0x33,
REG2
=
0x33
MOVLB
Move Literal to low nibble in BSR
Syntax:
[
label ]
MOVLB k
Operands:
0
≤ k ≤ 15
Operation:
k
→ (BSR<3:0>)
Status Affected:
None
Encoding:
1011
1000
uuuu
kkkk
Description:
The four bit literal 'k' is loaded in the
Bank Select Register (BSR). Only the
low 4-bits of the Bank Select Register
are affected. The upper half of the BSR
is unchanged. The assembler will
encode the “u” elds as '0'.
Words:
1
Cycles:
1
Q Cycle Activity:
Q1
Q2
Q3
Q4
Decode
Read
literal 'u:k'
Execute
Write literal
'k' to
BSR<3:0>
Example:
MOVLB
0x5
Before Instruction
BSR register
=
0x22
After Instruction
BSR register
=
0x25
Note:
For the PIC17C42, only the low four bits of
the BSR register are physically imple-
mented. The upper nibble is read as '0'.
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