X-Hacker.org- Ralf Brown's Interrupt List (Part 1,2) - int 2f - multiplex - dos 3+ internal

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INT 2F - Multiplex - DOS 3+ internal - SUM MEMORY
        AX = 121Dh
        DS:SI -> memory to add up
        CX = 0000h
        DX = limit
Return: AL = byte which exceeded limit
        CX = number of bytes before limit exceeded
        DX = remainder after adding first CX bytes
        DS:SI -> byte beyond the one which exceeded the limit
SeeAlso: AX=121Ch

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