Fujitsu MB91F109 FR30 Hardware Manual page 62

CHAPTER 2 CPU
[Division]
When calculation begins, a dividend is stored in the MDL.
The result of division by the DIV0S/DIV0U, DIV1, DIV2, DIV3, or DIV4S instruction is stored in
the MDL and MDH as follows:
• MDH: Remainder
• MDL: Quotient
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