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HCS12 Datenblatt(PDF) 301 Page - Freescale Semiconductor, Inc

Teilenummer HCS12
Bauteilbeschribung  HCS12 Microcontrollers
PDF  452 Pages
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Hersteller  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

HCS12 Datenblatt(HTML) 301 Page - Freescale Semiconductor, Inc

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Glossary
S12CPUV2 Reference Manual, Rev. 4.0
Freescale Semiconductor
301
Operation:
(B) – $00
Description:
Subtracts $00 from the content of accumulator B and sets the condition
codes accordingly.
The subtraction is accomplished internally without modifying B.
The TSTB instruction provides limited information when testing unsigned
values. Since no unsigned value is less than zero, BLO and BLS have no
utility following TSTB. While BHI can be used after TST, it performs the
same function as BNE, which is preferred. After testing signed values, all
signed branches are available.
TSTB
Test B
TSTB
CCR Details:
S
X
HIN
Z
V
C
––––
∆∆
00
N: Set if MSB of result is set; cleared otherwise
Z: Set if result is $00; cleared otherwise
V: 0; cleared
C: 0; cleared
Source Form
Address
Mode
Object Code
Access Detail
HCS12
M68HC12
TSTB
INH
D7
O
O



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