Div0U (Initial Setting Up For Unsigned Division) - Fujitsu FR Family Instruction Manual

CHAPTER 7 DETAILED EXECUTION INSTRUCTIONS
7.39

DIV0U (Initial Setting Up for Unsigned Division)

This command is used for unsigned division in which the multiplication/division
register (MDL) contains the dividend and the "Ri" the divisor, with the quotient stored in
the "MDL" register and the remainder in the multiplication/division register (MDH).
The "MDH" and bits "D1" and "D0" are cleared to "0".
To execute unsigned division, the instructions are used in combination such as DIV0U
and DIV1 x 32
■ DIV0U (Initial Setting Up for Unsigned Division)
Assembler format: DIV0U Ri
Operation: 0 → D0
0 → D1
0 → MDH
Flag change:
N, Z, V, and C: Unchanged
Execution cycles: 1 cycle
Instruction format:
Example: DIV0U R2
130
N Z V C
– – – –
MSB
1 0 0 1
R2
0 0 F F F F F F
MDH
0 0 0 0 0 0 0 0
MDL
0 F F F F F F 0
D1D0T
SCR
x x 0
Before execution
0 1 1 1 0 1
LSB
0 1 Ri
R2
0 0 F F F F F F
MDH
0 0 0 0 0 0 0 0
MDL
0 F F F F F F 0
SCR
After execution
D1D0T
0 0 0