FUJITSU FR family 32-bit microcontroller instruction manuel CM71-00101-5E - Manual (Page 185)

161
CHAPTER 7 DETAILED EXECUTION INSTRUCTIONS
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
Operation: extu (( R14 + o8 × 2))
→
Ri
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 LSB
0 1 0 0 Ri o8
12345678
R3 R3
4 3 2 1
0 0 0 0 4 3 2 1
12345678
1234567A 1234567A 4 3 2 1
1 2 3 4 5 6 7 8 R14 1 2 3 4 5 6 7 8 R14
Instruction bit pattern : 0100 0000 0001 0011
Memory Memory
Before execution After execution
x x x x x x x x