FR81 Family
264 FUJITSU MICROELECTRONICS LIMITED CM71-00105-1E
CHAPTER 7 DETAILED EXECUTION INSTRUCTIONS
7.88
7.88 FST (Store Word Data in Floating Point Register to
Memory)
Loads the word data in FRi to memory address BP+u16 × 4. Unsigned u16 value is
calculated. The value in u16 × 4 is specified as udisp18.
● Assembler Format
FST FRi, @(BP, udisp18)
● Operation
FRi → (BP+u16 × 4)
● Flag Change
N, Z, V, C: Unchanged.
● Classification
Memory store instruction, FR81 family
● Execution Cycles
a cycle
● Instruction Format
● EIT Occurrence and Detection
A data access protection violation exception, an invalid instruction exception (a data access error or FPU
absence error), or an interrupt is detected.
NZVC
----
MSB LSB
(n+0)000101110111 FRi
(n+2) u16