NEC 78K/0 Series user manual DIVUW

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CHAPTER 5 EXPLANATION OF INSTRUCTIONS
User's Manual U12326EJ4V0UM
Divide Unsigned Word
DIVUW Unsigned Division of Word Data
[Instruction format] DIVUW dst
[Operation] AX (quotient), dst (remainder) ← AX ÷ dst
[Operand]
Mnemonic Operand(dst)
DIVUW C
[Flag]
ZACCY
[Description]
• The AX register contents are divided by the destination operand (dst) contents and the quotient and the
remainder are stored in the AX register and the destination operand (dst), respectively.
Division is executed using the AX register and destination operand (dst) contents as unsigned data.
However, when the destination operand (dst) is 0, the X register contents are stored in the C register and
AX becomes 0FFFFH.
[Description example]
DIVUW C; The AX register contents are divided by the C register contents and the quotient and the remainder
are stored in the AX register and the C register, respectively.