HelpPC 2.10 Quick Reference Utility Copyright 1991 David Jurgens

           INT 1A,3 - Set Time on Real Time Clock  (XT 286,AT,PS/2)

       AH = 03
       CH = hours in BCD
       CL = minutes in BCD
       DH = seconds in BCD
       DL = 1 if daylight savings time option
          = 0 if standard time

       returns nothing

       - clock values must be in BCD
       - see   RTC

Esc or Alt-X to exit int 1a,3 Home/PgUp/PgDn/End ←↑↓→
Converted to HTML in 2006 by Timo Bingmann