mc9s12xd256 Freescale Semiconductor, Inc, mc9s12xd256 Datasheet - Page 283

• Manufacturer Part Number: mc9s12xd256
• Description: Hcs12x Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

TFR
Operation
TFR RD,CCR: CCR
TFR CCR,RD: RD[3:0]
TFR RD,PC:
Transfers the content of one RISC core register to another.
The TFR RD,PC instruction can be used to implement relative subroutine calls.
Example:
RETADDR ...
SUBR
CCR Effects
Code and CPU Cycles
Freescale Semiconductor
TFR RD,CCR, TFR RD,PC:
N:
Z:
V:
C:
TFR RD,CCR CCR
TFR CCR,RS RS
TFR RD,PCPC+4
—
N
Not affected.
Not affected.
Not affected.
Not affected.
—
Z
TFR
BRA
...
JAL
—
V
Source Form
—
C
PC+4
CCR
RD
RD
R7,PC
SUBR
R7
RD[3:0]; 0
RD
CCR
Transfer from and to Special Registers
;Return address (RETADDR) is stored in R7
;Relative branch to subroutine (SUBR)
;Jump to return address (RETADDR)
MC9S12XDP512 Data Sheet, Rev. 2.17
Address
Mode
MON
MON
MON
RD[15:4]
0
0
0
0
0
0
TFR CCR,RS:
0
0
0
N:
Z:
V:
C:
N
0
0
0
RS[3].
RS[2].
RS[1].
RS[0].
Z
0
0
0
V
Machine Code
RD
RS
RD
C
1
1
1
1
1
1
Chapter 6 XGATE (S12XGATEV2)
1
1
1
1
1
1
1
1
1
0
0
0
TFR
0
0
1
0
1
0
Cycles
P
P
P
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