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

7.65

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

Extends with zeros the half-word data at memory address "(R14 + o8 × 2)", loads to
"Ri".
The value "o8" is a signed calculation.
■ LDUH (Load Half-word Data in Memory to Register)
Assembler format: LDUH @(R14, disp9), Ri
extu (( R14 + o8 × 2)) → Ri
Operation:
Flag change:
N, Z, V, and C: Unchanged
Execution cycles: b cycle(s)
Instruction format:
Example: LDUH @(R14, 2), R3
N Z V C
– – – –
MSB
0 1 0 0
Instruction bit pattern : 0100 0000 0001 0011
R3 x x x x x x x x
R14 1 2 3 4 5 6 7 8
12345678 Memory
1234567A 4 3 2 1
Before execution
CHAPTER 7 DETAILED EXECUTION INSTRUCTIONS
o8
R3
R14
12345678
1234567A
LSB
Ri
0 0 0 0 4 3 2 1
1 2 3 4 5 6 7 8
Memory
4 3 2 1
After execution
161