Path: utzoo!mnetor!uunet!lll-winken!lll-lcc!ames!hao!oddjob!gargoyle!ihnp4!alberta!sask!lowey
From: lowey@sask.UUCP (Kevin Lowey)
Newsgroups: comp.sys.ibm.pc
Subject: Re: "abort, retry, or ignore?" : help needed
Message-ID: <1046@sask.UUCP>
Date: 27 Feb 88 23:30:59 GMT
References: <2358@chalmers.UUCP>
Organization: University of Saskatchewan
Lines: 25
Summary: Don't forget to restore the interrupt


Oops, I forgot one important point in my last message about trapping 
the Abort Retry Ignore message.  If you do install your own interrupt
handler so you can avoid this message, don't forget to re-install the
original critical error handler when your program terminates. This 
includes when your program terminates abnormally, like with a control-C 
or other runtime error.  Again, Turbo Pascal 4.0 does this automatically,
and also allows you to add your own cleanup routines which are executed 
when the program terminates (no matter HOW it terminates).  

  The new Turbo version 4.0 interrupt routines and error handling stuff
is quite impressive when compared to the old 3.0 routines.  In case you
are interested, I posted a TSR program in COMP.LANG.PASCAL a while back 
which takes over Interrupt 10h (video I/O).  Many of the principles 
in there also apply to this problem of taking over interrupt 24 (the 
critical error handler).  The nifty thing is it is all Turbo 4.0 code,
no inline code or assembler required.

______________________________________________________________________________
| Kevin Lowey                    |The above is the personal opinion of Kevin |
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