Path: utzoo!attcan!uunet!husc6!ukma!mailrus!iuvax!inuxc!inuxh!blp
From: blp@inuxh.UUCP (Bruce Paramore)
Newsgroups: comp.sys.ibm.pc
Subject: DOS device driver problem
Message-ID: <712@inuxh.UUCP>
Date: 2 Nov 88 23:03:18 GMT
Organization: AT&T Consumer Products, Indianapolis
Lines: 14
References:

I am having a problem with a DOS device driver I have written.  All it has
to do for my present application is to write a byte to a register on a custom
board.  This seems to work fine for all values except 0x1a (^Z).  I have
written a small print routine to tell me when I enter my driver, and when
I pass the 0x1a to DOS, my driver is not entered, and a value of 0 is
returned for the bytes written.  I am using MS-DOS 3.3.

Can anyone give me ideas on what may be causing this problem?  The driver
was supposed to handle some timing considerations in the future, but if
I can't solve this problem soon, I'll need to do I/O writes directly
from the application :-(

bruce paramore
att!inuxc!blp