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From: Ralf.Brown@B.GP.CS.CMU.EDU
Newsgroups: comp.os.msdos.programmer
Subject: Re: Using DOS INT21 to read from a file
Message-ID: <27ad6cd9@ralf>
Date: 4 Feb 91 13:16:57 GMT
Article-I.D.: ralf.27ad6cd9
Sender: netnews@cs.cmu.edu (USENET News Group Software)
Organization: Carnegie Mellon University School of Computer Science
Lines: 20
In-Reply-To: <26647@uflorida.cis.ufl.EDU>

In article <26647@uflorida.cis.ufl.EDU>, jdb@reef.cis.ufl.edu (Brian K. W. Hook) wrote:
}asm {
}        mov ah, 3FH
}        mov bx, fhandle
}        mov cx, 0001H
}        mov dx, c
}        int 21
}}
}
}AX returns 86C0, which is REALLY wrong.  AX should be the number of bytes
}read or at least an error code....what am I doing wrong?

You forgot the 'h' in 'int 21h'....  Your code calls INT 15h, which returns
AH=86h on an unknown function.

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