Path: utzoo!attcan!uunet!pyrdc!pyrnj!rutgers!att!akgua!brb
From: brb@akgua.ATT.COM (Brian R. Bainter)
Newsgroups: comp.lang.c
Subject: Re: Turbo C
Message-ID: <1806@akgua.ATT.COM>
Date: 21 Jul 88 15:44:57 GMT
References: <16577@brl-adm.ARPA>
Organization: AT&T Network Systems/Bell Labs, Atlanta GA
Lines: 29

From article <16577@brl-adm.ARPA>, by C08922DB%WUVMD.BITNET@cunyvm.cuny.edu:
> 
> I am interested in understanding the structure of the function type
> "interrupt" in Turbo C. Basically, what is special about this function
> definition, and what approaches can be used in other compilers to simulate
> this feature? Optimum-C is what I'm using.
> 
> Thanks in advance,
> 
> Thank you.
> Don Branson
> C08922DB@WUVMD.BITNET

I am not entirely sure, because I haven't worked with it before, but according
to my reading I believe that the biggest speciality of this type of function
is that it does a return from interrupt instead of just a normal return from
subroutine. I think that it may also save off all of the registers before
entering the routine, and then restores them just before the return.

If after I get home and find out that this is not correct by consulting
the manual, I will post another article to clarify if someone has not already
done so.


-- 
	Brian R. Bainter

 AT&T Technologies Atlanta Works
 {cbosgd, gatech, ihnp4, moss, mtune, ulysses}akgua!brb