allbery@ncoast.UUCP (Brandon S. Allbery) (01/15/89)
The only copy of the Interrupt List I can find on ncoast and my almost
useless DOS manual agree that the structureset by INT 21, AH=4EH/4FH
contains one 16-bit entity each for file date and time. Question: does
anyone know the format of these numbers?
Thanks in advance,
++Brandon
--
Brandon S. Allbery, moderator of comp.sources.misc allbery@ncoast.org (soon)
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NCoast Public Access UN*X - (216) 781-6201, 300/1200/2400 baud, login: makeuserwilson@uhccux.uhcc.hawaii.edu (Tom Wilson) (01/15/89)
In article <13339@ncoast.UUCP> allbery@ncoast.UUCP (Brandon S. Allbery) writes: >The only copy of the Interrupt List I can find on ncoast and my almost >useless DOS manual agree that the structureset by INT 21, AH=4EH/4FH >contains one 16-bit entity each for file date and time. Question: does >anyone know the format of these numbers? My essential reference on the subject of DOS interrupts is Advanced MS-DOS, by Ray Duncan (Microsoft Press, 2nd Edition is out) Format of the file time: Bits Contents 00-04 seconds (2-second increments), 0-29 05-0A minutes (0-59) 0B-0F hours (0-23) File date: Bits Contents 00-04 date (1-31) 05-08 month (1-12) 09-0F year (relative to 1980) ---- Duncan, p. 445 I guess I'm spoiled by using Duncan. This is the second time this question has been asked in the last couple of days (the other was on comp.lang.c) -- Tom Wilson wilson@uhccux.UUCP wilson@uhccux.uhcc.Hawaii.Edu (Internet) wilson@uhccux (Bitnet)
Ralf.Brown@B.GP.CS.CMU.EDU (01/16/89)
In article <13339@ncoast.UUCP>, allbery@ncoast.UUCP (Brandon S. Allbery) writes: }The only copy of the Interrupt List I can find on ncoast and my almost }useless DOS manual agree that the structureset by INT 21, AH=4EH/4FH }contains one 16-bit entity each for file date and time. Question: does }anyone know the format of these numbers? Hmm, one of the increasingly-rare omissions. Anyway, from an ancient photocopy: file date: bits 15-9: year-1980 bits 8-5: month bits 4-0: day file time: bits 15-11: hour bits 10-5: minute bits 4-0: second/2 -- UUCP: {ucbvax,harvard}!cs.cmu.edu!ralf -=-=-=- Voice: (412) 268-3053 (school) ARPA: ralf@cs.cmu.edu BIT: ralf%cs.cmu.edu@CMUCCVMA FIDO: Ralf Brown 1:129/31 Disclaimer? I claimed something? You cannot achieve the impossible without attempting the absurd.