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From: roger@celtics.UUCP
Newsgroups: comp.os.misc
Subject: Re: command interpreters
Message-ID: <1558@celtics.UUCP>
Date: Tue, 26-May-87 10:43:09 EDT
Article-I.D.: celtics.1558
Posted: Tue May 26 10:43:09 1987
Date-Received: Thu, 28-May-87 06:30:06 EDT
References: <5828@shemp.UCLA.EDU> <34ab0e42.8be4@apollo.uucp> <667@bsu-cs.UUCP> <1122@sigi.Colorado.EDU> <1139@carthage.swatsun.UUCP>
Reply-To: roger@celtics.UUCP (Roger B.A. Klorese)
Organization: CELERITY (Northeast Area), Framingham, MA
Lines: 35

In article <1139@carthage.swatsun.UUCP> schwartz@swatsun (Scott Schwartz) writes:
%In article <1122@sigi.Colorado.EDU>, forys@sigi.Colorado.EDU (Jeff Forys) writes:
%> Wait!  It wasnt a penalty -- it was a feature!!  Besides, arent you
%> warned of the impending doom with something like:
%> 
%> 	AT STACK LEVEL 40, USE `RLS' TO RELEASE
%
%Yup.  It was all intended as a "feature" and the maximum stack depth
%allowed is settable by Your System Administrator (it's set to 10 around here).
%But in all my years (well, the last four anyway) I've never made use of
%that feature.  I have provoked it's wrath when impatiently hitting break 
%several times in a row to stop a recalcitrant program.  
%
%Incidently, for those who have never used Pr1mos, the result of stacking up
%too many frames (at least in rev 19.4.xx or later, I think) is to dump you
%into the "mini level" where all you can do is execute pr1mos internal
%commands,  like RLS.

The whole point, though, is that from Rev. 19 on, with the existence of
Executable Program Format (EPF, or ".RUN" files), each level contains
ALL information needed to restart the program at that level.  So:

OK, r myprog
--- Enter filename:
^P
OK, ld
<list of files>
OK, START
my.data.file.name

... Kinda like job control, no?
-- 
 ///==\\   (No disclaimer - nobody's listening anyway.)
///        Roger B.A. Klorese, CELERITY (Northeast Area)
\\\        40 Speen St., Framingham, MA 01701  +1 617 872-1552
 \\\==//   celtics!roger@seismo.CSS.GOV - seismo!celtics!roger