Fujitsu CM71-00101-5E User Manual
154
CHAPTER 7 DETAILED EXECUTION INSTRUCTIONS
7.60
LD (Load Word Data in Memory to Register)
Loads the word data at memory address "R15" to "Rj", and adds 4 to the value of "R15".
If "R15" is given as parameter "Ri", the value read from the memory will be loaded into
memory address "R15".
If "R15" is given as parameter "Ri", the value read from the memory will be loaded into
memory address "R15".
■
LD (Load Word Data in Memory to Register)
Assembler format:
LD @ R15 +, Ri
Operation:
(R15)
→
Ri
R15 + 4
→
R15
Flag change:
N, Z, V, and C: Unchanged
Execution cycles:
b cycle(s)
Instruction format:
Example:
LD @ R15 +, R3
N
Z
V
C
–
–
–
–
MSB
LSB
0
0
0
0
0
1
1
1
0
0
0
0
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 C
8 7 6 5
4 3 2 1
R15
x x x x
x x x x
Memory
Memory
Before execution
After execution
Instruction bit pattern : 0000 0111 0000 0011