Article View: comp.os.msdos.programmer
Article #553Re: Opening files using DOS services
From: Christian Blum
Date: Thu, 30 Jul 1992 13:07
Date: Thu, 30 Jul 1992 13:07
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1360 bytes
Shaul Wallach <F66204@BARILVM.BITNET> writes: > Here is a novice's programming question to which I haven't > been able to find an answer in the books at hand. When you > create a disk file using functions AH = 3C or 5B, DOS (i.e. > INT 21H) returns a file handle in AX. However, these functions > don't require any file-access code in AL. Can I assume that > the file will be opened for write access, or must I first > explicitly open the file with function 3D and a file-access > code in AL and use the handle this function returns, ignoring > the handle returned by function 3C or 5B? O dear (:-), of course it is opened for write access! If you tell DOS that you want to create a file, do you think it's that picky and doesn't let you write to it? BTW: have you tried it? That's a good method of getting ahead... Chris
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Path: arc1-ca.pugleaf.net!sparky!uunet!mcsun!Germany.EU.net!unido!sbsvax!coli-gate.coli.uni-sb.de!sbustd!chbl From: chbl@sbustd.rz.uni-sb.de (Christian Blum) Newsgroups: comp.os.msdos.programmer,comp.sys.ibm.pc.misc Subject: Re: Opening files using DOS services Message-ID: <1992Jul30.130751.17044@coli.uni-sb.de> Date: 30 Jul 92 13:07:51 GMT References: <92210.214621F66204@BARILVM.BITNET> Sender: news@coli.uni-sb.de (Usenet news system) Organization: Studenten-Mail, Rechenzentrum Universitaet des Saarlandes Lines: 17