Stb (Store Byte Data In Register To Memory) - Fujitsu FR Family Instruction Manual

CHAPTER 7 DETAILED EXECUTION INSTRUCTIONS
7.80

STB (Store Byte Data in Register to Memory)

Stores the byte data in "Ri" to memory address "(R13 + Rj)".
■ STB (Store Byte Data in Register to Memory)
Assembler format: STB Ri, @ (R13, Rj)
Ri → (R13 + Rj)
Operation:
Flag change:
N, Z, V, and C: Unchanged
Execution cycles: a cycle(s)
Instruction format:
Example: STB R3, @(R13, R2)
176
N Z V C
– – – –
MSB
0 0 0 1
Instruction bit pattern : 0001 0010 0010 0011
R2
0 0 0 0 0 0 0 4
R3
0 0 0 0 0 0 2 1
1 2 3 4 5 6 7 8
R13
Memory
1234567B
x x
1234567C
Before execution
0 0 1 0 Rj
LSB
Ri
R2
0 0 0 0 0 0 0 4
R3 0 0 0 0 0 0 2 1
1 2 3 4 5 6 7 8
R13
Memory
1234567B
1234567C
2 1
After execution