Div4S (Correction Answer For Signed Division) - Fujitsu FR Family Instruction Manual

7.43

DIV4S (Correction Answer for Signed Division)

This instruction is used in signed division. It should be used in combinations such as
DIV0S, DIV1 x 32, DIV2, DIV3 and DIV4S.
■ DIV4S (Correction Answer for Signed Division)
Assembler format: DIV4S
Operation: if (D1 = = 1) {
}
Flag change:
N, Z, V, and C: Unchanged
Execution cycles: 1 cycle
Instruction format:
Example: DIV4S
0 – MDL → MDL
N Z V C
– – – –
MSB
1 0 0 1
Instruction bit pattern : 1001 1111 0111 0000
R2 0 0 F F F F F F
MDH
0 0 0 0 0 0 0 0
MDL
0 0 0 0 0 0 0 F
D1 D0 T
SCR
1 1 0
N Z V C
CCR
0 0 0 0
Before execution
CHAPTER 7 DETAILED EXECUTION INSTRUCTIONS
1 1 1 1 0 1
LSB
1 1 0 0 0 0
R2 0 0 F F F F F F
MDH
0 0 0 0 0 0 0 0
MDL
F F F F F F F 1
D1 D0 T
SCR
N Z V C
CCR
0 0 0 0
After execution
1 1 0
137