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CM71-00105-1E FUJITSU MICROELECTRONICS LIMITED 293
FR81 Family
CHAPTER 7 DETAILED EXECUTION INSTRUCTIONS
7.104
● Instruction Format
● EIT Occurrence and Detection
User mode:
An invalid instruction exception (system-only register access) is generated. A data access protection
violation exception, an invalid instruction exception (data access error), or an interrupt is detected.
Privilege mode:
A data access protection violation exception, an invalid instruction exception (data access error), or an
interrupt is detected.
● Execution Example
LD @R15+, MDH ; Bit pattern of the instruction: 0000 0111 1000 0100
MSB LSB
000001111000 Rs
12345670
12345674
123 4 5674
R15
MDH
8 765 43 21
12345670
12345674
8 765 43 21
R15
123 4 5678
8 765 43 21
MDH
xxxx xxxx
Memory Memory
Before execution After execution