X-Hacker.org- Ralf Brown's Interrupt List (Part 1,2) - int 67 - virtual control program interface

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INT 67 - Virtual Control Program Interface - GET PHYS ADDR OF PAGE IN FIRST MB
        AX = DE06h
        CX = page number (linear address shifted right 12 bits)
Return: AH = 00h successful
            EDX = physical address of page
        AH nonzero: invalid page number (AH = 8Bh recommended)

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