Fujitsu CM71-00101-5E User Manual
153
CHAPTER 7 DETAILED EXECUTION INSTRUCTIONS
7.59
LD (Load Word Data in Memory to Register)
Loads the word data at memory address "(R15 + u4 × 4)" to "Ri".
The value "u4" is an unsigned calculation.
The value "u4" is an unsigned calculation.
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LD (Load Word Data in Memory to Register)
Assembler format:
LD @ (R15, udisp6), Ri
Operation:
(R15 + u4 × 4)
→
Ri
Flag change:
N, Z, V, and C: Unchanged
Execution cycles:
b cycle(s)
Instruction format:
Example:
LD @ (R15, 4), R3
N
Z
V
C
–
–
–
–
MSB
LSB
0
0
0
0
0
0
1
1
u4
Ri
12345678
1234567C
1 2 3 4
5 6 7 8
R3
R15
8 7 6 5
4 3 2 1
12345678
1234567C
8 7 6 5
4 3 2 1
R3
1 2 3 4
5 6 7 8
8 7 6 5
4 3 2 1
R15
Instruction bit pattern :
0000 0011 0001 0011
x x x x
x x x x
Memory
Memory
Before execution
After execution