X-Hacker.org- Ralf Brown's Interrupt List (Part 1,2) - int 6f - hp es-12 extended bios

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INT 6F - HP ES-12 EXTENDED BIOS - READ CMOS MEMORY
        BP = 0012h
        AH = 22h
        BL = address of CMOS byte to read
Return: AH = status
        AL = byte read
        BP, DS destroyed
SeeAlso: BP=0012h/AH=24h

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