Extuh (Unsigned Extend From Byte Data To Word Data) - Fujitsu FR Family Instruction Manual

CHAPTER 7 DETAILED EXECUTION INSTRUCTIONS

7.128 EXTUH (Unsigned Extend from Byte Data to Word Data)

Extend the half-word data indicated by "Ri" to word data as an unsigned binary value.
■ EXTUH (Unsigned Extend from Byte Data to Word Data)
Assembler format: EXTUH Ri
Operation: extu (Ri) → Ri (half-word → word)
Flag change:
N, Z, V, and C: Unchanged
Execution cycles: 1 cycle
Instruction format:
Example: EXTUH R1
242
N Z V C
– – – –
MSB
1 0 0 1
R1
F F F F F F F F
Before execution
0 1 1 1 1 0
LSB
1 1 Ri
R1 0 0 0 0 F F F F
After execution