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HCS12 Datasheet(PDF) 296 Page - Freescale Semiconductor, Inc

Part # HCS12
Description  HCS12 Microcontrollers
PDF  452 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

HCS12 Datasheet(HTML) 296 Page - Freescale Semiconductor, Inc

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Instruction Glossary
S12CPUV2 Reference Manual, Rev. 4.0
296
Freescale Semiconductor
Operation:
See table.
Description:
Transfers the content of a source register to a destination register specified
in the instruction. The order in which transfers between 8-bit and 16-bit
registers are specified affects the high byte of the 16-bit registers differently.
Cases involving TMP2 and TMP3 are reserved for Freescale use, so some
assemblers may not permit their use. It is possible to generate these cases
by using DC.B or DC.W assembler directives.
None affected, unless the CCR is the destination register. Condition codes
take on the value of the corresponding source bits, except that the X mask
bit cannot change from 0 to 1. Software can leave the X bit set, leave it
cleared, or change it from 1 to 0, but it can be set only by a reset or by
recognition of an XIRQ interrupt.
TFR
Transfer Register Content
to Another Register
TFR
CCR Details:
S
X
HIN
Z
V
C
Or:
S
X
HIN
Z
V
C
––––––––
∆⇓∆∆∆∆∆∆
Source Form
Address
Mode
Object Code(1)
1. Legal coding for eb is summarized in the following table. Columns represent the high-order source digit. Rows represent
the low-order destination digit (MSB is a don’t-care). Values are in hexadecimal.
Access Detail
HCS12
M68HC12
TFR abcdxys,abcdxys
INH
B7 eb
P
P
01
2
3
4
5
6
7
0
A
⇒ AB ⇒ A
CCR
⇒ A
TMP3L ⇒ AB ⇒ AXL ⇒ AYL ⇒ ASPL ⇒ A
1
A
⇒ BB ⇒ B
CCR
⇒ B
TMP3L ⇒ BB ⇒ BXL ⇒ BYL ⇒ BSPL ⇒ B
2
A
⇒ CCR
B
⇒ CCR
CCR
⇒ CCR
TMP3L ⇒ CCR
B
⇒ CCR
XL ⇒ CCR
YL ⇒ CCR
SPL ⇒ CCR
3
sex:A
⇒ TMP2
sex:B
⇒ TMP2
sex:CCR
⇒ TMP2
TMP3
⇒ TMP2
D
⇒ TMP2
X
⇒ TMP2
Y
⇒ TMP2
SP
⇒ TMP2
4
sex:A
⇒ D
SEX A,D
sex:B
⇒ D
SEX B,D
sex:CCR
⇒ D
SEX CCR,D
TMP3
⇒ DD ⇒ DX ⇒ DY ⇒ DSP ⇒ D
5
sex:A
⇒ X
SEX A,X
sex:B
⇒ X
SEX B,X
sex:CCR
⇒ X
SEX CCR,X
TMP3
⇒ XD ⇒ XX ⇒ XY ⇒ XSP ⇒ X
6
sex:A
⇒ Y
SEX A,Y
sex:B
⇒ Y
SEX B,Y
sex:CCR
⇒ Y
SEX CCR,Y
TMP3
⇒ YD ⇒ YX ⇒ YY ⇒ YSP ⇒ Y
7
sex:A
⇒ SP
SEX A,SP
sex:B
⇒ SP
SEX B,SP
sex:CCR
⇒ SP
SEX CCR,SP
TMP3
⇒ SP
D
⇒ SP
X
⇒ SP
Y
⇒ SP
SP
⇒ SP



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