Lduh (Load Half-Word Data In Memory To Register) - Fujitsu FR Family Instruction Manual

CHAPTER 7 DETAILED EXECUTION INSTRUCTIONS
7.64

LDUH (Load Half-word Data in Memory to Register)

Extends with zeros the half-word data at memory address "(R13 + Rj)", loads to "Ri".
■ LDUH (Load Half-word Data in Memory to Register)
Assembler format: LDUH @(R13, Rj), Ri
extu (( R13 + Rj)) → Ri
Operation:
Flag change:
N, Z, V, and C: Unchanged
Execution cycles: b cycle(s)
Instruction format:
Example: LDUH @(R13, R2), R3
160
N Z V C
– – – –
MSB
0 0 0 0
Instruction bit pattern : 0000 0001 0010 0011
R2 0 0 0 0 0 0 0 4
R3
x x x x x x x x
R13 1 2 3 4 5 6 7 8
12345678
Memory
1234567C 4 3 2 1
Before execution
0 0 0 1 Rj
LSB
Ri
R2
0 0 0 0 0 0 0 4
R3 0 0 0 0 4 3 2 1
R13 1 2 3 4 5 6 7 8
12345678
Memory
1234567C 4 3 2 1
After execution