X-Hacker.org- Ralf Brown's Interrupt List (Part 1,2) - int 1a - clock

Click above to get retro games delivered to your door ever month! X-Hacker.org- Ralf Brown's Interrupt List (Part 1,2) - int 1a - clock - set alarm (at,xt286,conv,ps)

[<<Previous Entry] [^^Up^^] [Next Entry>>] [Menu] [About The Guide]

INT 1A - CLOCK - SET ALARM (AT,XT286,CONV,PS)
        AH = 06h
        CH = hours in BCD
        CL = minutes in BCD
        DH = seconds in BCD
Return: CF set if alarm already set or clock inoperable
        INT 4Ah will be called when alarm goes off, every 24 hours until reset
SeeAlso: AH=07h,INT 4A

Online resources provided by: http://www.X-Hacker.org --- NG 2 HTML conversion by Dave Pearson