Datasheet

Chapter 10 XGATE (S12XGATEV3)
MC9S12XE-Family Reference Manual Rev. 1.25
Freescale Semiconductor 427
Operation
Unlocks a semaphore that was locked by the RISC core.
In monadic address mode, bits RS[2:0] select the semaphore to be cleared.
CCR Effects
Code and CPU Cycles
CSEM
Clear Semaphore
CSEM
NZVC
————
N: Not affected.
Z: Not affected.
V: Not affected.
C: Not affected.
Source Form
Address
Mode
Machine Code Cycles
CSEM #IMM3 IMM3 00000 IMM3 1 1110000 PA
CSEM RS MON 00000 RS 11110001 PA