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392 FUJITSU MICROELECTRONICS LIMITED CM71-00105-1E
CHAPTER 7 DETAILED EXECUTION INSTRUCTIONS
7.156
7.156 ST (Store Word Data in Program Status Register to
Memory)
Subtracts 4 from the value of R15, stores the word data in the program status (PS) to
the memory address indicated by the new value of R15.
● Assembler Format
ST PS,@-R15
● Operation
R15 - 4 → R15
PS → (R15)
● Flag Change
N, Z, V, C: Unchanged.
● Classification
Memory Store instruction, Instruction with delay slot
● Execution Cycles
a cycle
● Instruction Format
NZVC
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MSB LSB
0001011110010000