en:docs:dos:api:int21:57:00

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

2018/09/07 07:04 · prokushev

Int 21H, AH=57H, AL=00H

Version

2 and higher

Brief

GET FILE'S LAST-WRITTEN DATE AND TIME

Family API

Input

AX = 5700h
BX = file handle

Return

CF clear if successful

    CX = file's time (see #01665)
    DX = file's date (see #01666)
CF set on error
    AX = error code (01h,06h) (see #01680)

Notes

under DR DOS 3.41 and 5.0, this function returns 0 (no date/time) for
  character devices; MS-DOS returns date and time of opening

Bitfields for file time: Bit(s) Description (Table 01665) 15-11 hours (0-23) 10-5 minutes 4-0 seconds/2

Bitfields for file date: Bit(s) Description (Table 01666) 15-9 year - 1980 8-5 month 4-0 day

See also

 AX=5701h,AX=5704h"Windows95"

Note


en/docs/dos/api/int21/57/00.txt · Last modified: 2021/08/01 08:02 by prokushev