DAA - Decimal Adjust for Addition

Usage: DAA

Modifies Flags: AF CF PF SF ZF (OF undefined)

Corrects result (in AL) of a previous BCD addition operation. Contents of AL are changed to a pair of packed decimal digits.

DAS - Decimal Adjust for Subtraction

Usage: DAS

Modifies Flags: AF CF PF SF ZF (OF undefined)

Corrects result (in AL) of a previous BCD subtraction operation. Contents of AL are changed to a pair of packed decimal digits.

DEC - Decrement

Usage: DEC dest

Modifies Flags: AF OF PF SF ZF

Unsigned binary subtraction of one from the destination.

DIV - Divide

Usage: DIV src

Modifies Flags: (AF,CF,OF,PF,SF,ZF undefined)

Unsigned binary division of accumulator by source. If the source divisor is a byte value then AX is divided by "src" and the quotient is placed in AL and the remainder in AH. If source operand is a word value, then DX:AX is divided by "src" and the quotient is stored in AX and the remainder in DX.

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