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CM71-00105-1E FUJITSU MICROELECTRONICS LIMITED 211
FR81 Family
CHAPTER 7 DETAILED EXECUTION INSTRUCTIONS
7.54
7.54 ENTER (Enter Function)
This instruction is used for stack frame generation processing for high level
languages.The value u8 is calculated as an unsigned value. The value of u8 × 4 is
specified as u10.
● Assembler Format
ENTER #u10
● Operation
R14 → (R15-4)
R15 - 4 → R14
R15 - extu(u8 × 4) → R15
● Flag Change
N, Z, V, C: Unchanged.
● Classification
Other instructions
● Execution Cycles
1+a cycles
● Instruction Format
NZVC
----
MSB LSB
00001111 u8