aam

AL 10 -> AH mod 10 AL -> AL

You use `aam` only after executing a `mul` instruction between two BCD digits (unpacked). `mul` stores the result in the AX register. The result is less than 100 so it can be contained in the AL register (the low byte of the AX register). `aam` unpacks the AL result by dividing AL by 10, stores the quotient (most-significant digit) in AH, and stores the remainder (least-significant digit) in AL.

Adjust the AL register to contain the correct decimal result after a `mul` instruction between two BCD digits:

aam

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