Help needed on device drivers.

Article View: comp.sys.ibm.pc

Article #15818

#15818

From: holly
Date: Sat, 14 Feb 1987 23:20

25 lines
1599 bytes

References:


 

I have written my own print screen routine.  I did this to add some features
that are not found in the BIOS print screen.  According to Norton's 
"Programmer's Guide to the IBM PC", the IBMBIO.COM file contains extensions
to ROM-BIOS.  And "All that is necessary, besides the new routine, is that
the interrupt vectors for the previous routins be changed to point to the
location in memory where the new routines are placed."  He also mentions 
something about installable device drivers.

Now that I have the routine, I'd like to make it active when Shift PrtSc
is pressed.  Are there any suggestions?  Could I make this a device
driver and then somehow change the interrupt vector to point to the new
location?  Is there a "cookbook guide" for writting and installing device
drivers and/or for fiddling with the IBMBIO.COM file?  Answers to all
these questions are welcome.
 
Thanks

Joe Hollingsworth
hollingsworth-j@osu-20.arpa
holly@osu-eddie.uucp

Technical Details

Message-ID: <3125@osu-eddie.UUCP>

Path: arc1-ca.pugleaf.net!utzoo!watmath!clyde!cbatt!osu-eddie!holly

Show Full Headers

Complete Article Headers

Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: arc1-ca.pugleaf.net!utzoo!watmath!clyde!cbatt!osu-eddie!holly
From: holly@osu-eddie.UUCP
Newsgroups: comp.sys.ibm.pc
Subject: Help needed on device drivers.
Message-ID: <3125@osu-eddie.UUCP>
Date: Sat, 14-Feb-87 18:20:22 EST
Article-I.D.: osu-eddi.3125
Posted: Sat Feb 14 18:20:22 1987
Date-Received: Sun, 15-Feb-87 08:09:43 EST
Reply-To: holly@osu-eddie.UUCP (Joe Hollingsworth)
Organization: The Ohio State University, CIS Dept.
Lines: 23
Keywords: device drivers, ROM-BIOS, print screen
Summary: Questions concerning Device Drivers & ROM-BIOS.