en:docs:dos:api:int21:2b

Note: This API call is for DOS personality only. Use Family API for portability.

2018/09/07 07:04 · prokushev

Int 21H, AH=2BH

Version

1 and higher

Brief

SET SYSTEM DATE

Family API

Input

      AH = 2Bh
      CX = year (1980-2099)
      DH = month (1-12)
      DL = day (1-31)

Return

AL = status

          00h successful
          FFh invalid date, system date unchanged

Notes

DOS 3.3+ also sets CMOS clock; due to the limitations of the CLOCK$
        driver interface, the CMOS time is also updated to the current
        DOS time (which is the BIOS time-of-day clock with the default
        CLOCK$ driver)

See also

AH=2Ah,AH=2Dh,INT 1A/AH=05h

Note


en/docs/dos/api/int21/2b.txt · Last modified: 2020/12/09 04:32 by prokushev