Datasheet

PIC18F6520/8520/6620/8620/6720/8720
DS39609C-page 284  2003-2013 Microchip Technology Inc.
MOVFF Move f to f
Syntax: [ label ] MOVFF f
s
,f
d
Operands: 0  f
s
 4095
0  f
d
 4095
Operation: (f
s
)  f
d
Status Affected: None
Encoding:
1st word (source)
2nd word (destin.)
1100
1111
ffff
ffff
ffff
ffff
ffff
s
ffff
d
Description: The contents of source register ‘f
s
’
are moved to destination register
‘f
d
’. Location of source ‘f
s
’ can be
anywhere in the 4096-byte data
space (000h to FFFh) and location
of destination ‘f
d
’ can also be
anywhere from 000h to FFFh.
Either source or destination can be
W (a useful special situation).
MOVFF is particularly useful for
transferring a data memory location
to a peripheral register (such as the
transmit buffer or an I/O port).
The MOVFF instruction cannot use
the PCL, TOSU, TOSH or TOSL as
the destination register.
Words: 2
Cycles: 2 (3)
Q Cycle Activity:
Q1 Q2 Q3 Q4
Decode Read
register ‘f’
(src)
Process
Data
No
operation
Decode No
operation,
No dummy
read
No
operation
Write
register ‘f’
(dest)
Example:
MOVFF 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  255
Operation: k  BSR
Status Affected: None
Encoding:
0000 0001 kkkk kkkk
Description: The 8-bit literal ‘k’ is loaded into
the Bank Select Register (BSR).
Words: 1
Cycles: 1
Q Cycle Activity:
Q1 Q2 Q3 Q4
Decode Read literal
‘k’
Process
Data
Write
literal ‘k’ to
BSR
Example:
MOVLB 5
Before Instruction
BSR register = 0x02
After Instruction
BSR register = 0x05