mc9s12xd256 Freescale Semiconductor, Inc, mc9s12xd256 Datasheet - Page 277

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

SSEM
Operation
Attempts to set a semaphore. The state of the semaphore will be stored in the Carry-Flag:
In monadic address mode, bits RS[2:0] select the semaphore to be set.
CCR Effects
Code and CPU Cycles
Freescale Semiconductor
N:
Z:
V:
C:
SSEM #IMM3
SSEM RS
—
N
Not affected.
Not affected.
Not affected.
Set if semaphore is locked by the RISC core; cleared otherwise.
—
Z
1 = Semaphore is locked by the RISC core
0 = Semaphore is locked by the S12X_CPU
—
V
Source Form
C
Address
MC9S12XDP512 Data Sheet, Rev. 2.17
Mode
IMM3
MON
Set Semaphore
0
0
0
0
0
0
0
0
0
0
IMM3
Machine Code
RS
1
1
1
1
1
1
Chapter 6 XGATE (S12XGATEV2)
1
1
0
0
SSEM
0
0
1
1
0
1
Cycles
PA
PA
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