Div2 (Correction When Remainder Is 0) - Fujitsu FR Family Instruction Manual

CHAPTER 7 DETAILED EXECUTION INSTRUCTIONS
7.41

DIV2 (Correction when Remainder is 0)

This instruction is used in signed division. It should be used in combinations such as
DIV0S, DIV1 x 32, DIV2, DIV3 and DIV4S.
■ DIV2 (Correction when Remainder is 0)
Assembler format: DIV2 Ri
Operation: if (D1 = = 1) {
}
else {
}
if (Z == 1) {
}
Flag change:
N and V: Unchanged
Z: Set when the operation result of stepwise division is "0", cleared otherwise. Set according to
C: Set when the result of stepwise division involves a carry or borrow operation, cleared otherwise.
Execution cycles: 1 cycle
Instruction format:
134
MDH + Ri → temp
MDH – Ri → temp
0 → MDH
N Z V C
– C – C
remainder of division results, not according to quotient.
MSB
1 0 0 1 0 1 1 1 0 1
LSB
1 1 Ri