Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/3/84; site sesame.UUCP Path: utzoo!linus!decvax!ucbvax!ucdavis!lll-crg!seismo!harvard!talcott!sesame!slerner From: slerner@sesame.UUCP (Simcha-Yitzchak Lerner) Newsgroups: net.micro.pc Subject: Re: Who issued the int 16??? Message-ID: <386@sesame.UUCP> Date: Wed, 23-Oct-85 18:06:19 EDT Article-I.D.: sesame.386 Posted: Wed Oct 23 18:06:19 1985 Date-Received: Sat, 26-Oct-85 07:47:35 EDT References: <489@ttidcb.UUCP> Organization: Lotus Development Corp Lines: 23 > > Does anyone know (rhetoric question -- more correct: who knows and who > will tell me) how, an interrupt routine which is monitoring int 16 > BIOS calls (a la the desk program in last month's byte magazine) can > tell whether COMMAND.COM issued the call or some other resident pro- > cess? > (Aha! Another case for SuperHacker!) I suggest you look at the CS value on the stack when you are called. -- Opinions expressed are public domain, and do not belong to Lotus Development Corp. ---------------------------------------------------------------- Simcha-Yitzchak Lerner {genrad|ihnp4|ima}!wjh12!talcott!sesame!slerner {cbosgd|harvard}!talcott!sesame!slerner talcott!sesame!slerner@harvard.ARPA