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From: felixk@mailbag.shd.de (Felix Kasza)
Subject: Re: Exception Handling
Date: 1996/09/13
Message-ID: <32393072.72033128@shdgate.shd.de>#1/1
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references: <323750EA.167E@maths.usyd.edu.au>
organization: Sattler & Huenig Datentechnik, Germany
newsgroups: comp.object,comp.lang.java.tech,comp.lang.c++,comp.lang.ada
Date: 1996-09-13T00:00:00+00:00
List-Id: <comp.lang.ada>


Robbie,

 > replies by email please, i don't read this group.

Not feeling very sociable today, are we?

 > Where did the concept of exception handling originate ?

I don't know -- but I do know that IBM's /360 architecture uses a
mechanism for OS calls which looks very much like a trap.  PDPs used
similar features to handle illegal memory references.  In the late 60s
or early 70s, I saw an APL interpreter for the PDP that expressly made
use of this although it didn't export the functionality to the
programmer (APL has no concept of an exception).

Cheers,
Felix.