Found 1 hit - Term: xpl, Database: *, Strategy: exact
- [1] : The Free On-line Dictionary of Computing (27 SEP 03)
xpl
a small dialect of pl/i used for compiler writing from
stanford, 1967-69. xpl has
one-dimensional arrays. i/o is achieved with character
pseudo-variable input and output, e.g.
output = 'this is a line';
it has inline machine code. "programmers are given all the
rope they ask for. novices tend to hang themselves fairly
frequently." xpl has been implemented on ibm 360, univac
1100, icl system 4, cdc6000 and cyber series, xds
sigma-5 and sigma-7 and dec pdp-10.
an optimising xpl compiler version 1 by robin vowels
is a standard implementation of xpl
and is based on mckeeman, horning, and wortman's improved
xcom which employs hashed symbol table generation. it
includes the extra built-in function corehalfword.
the following areas have been optimised: procedures calls when
the argument and corresponding parameter are of the same type,
and when the argument is a constant; constant subscripts; use
of corelhalfword and coreword; string constants of length one;
iterative do statements by transferring code to the end of the
loop.
string constants of length one do not require a descriptor,
hence more descriptors are available for string variables.
comparison operations are treated as commutative, and an
improved commute algorithm is used. halfword instructions are
generated for bit16 variables.
these areas have been improved or re-written: calls on output,
catenation, integer-to-string conversion, multiply, divide,
and mod. an emitter for ss-type instructions has been added.
the compiler achieves an 11 reduction in object code
compiling itself, an 11 increase in compilation rate, a 55
increase in compilation speed when the $e toggle is set.
special treatment for catenating a string to an integer
substantially decreases consumption of the free string area,
and decreases string moves. the latter improvement is most
noticeable on small core machines.
core requirements: less than the improved xcom on which it is
based approx. 98000 bytes. symbol table size is 468.
ported to ibm system 370. the compiler is written in xpl.
the code generators are machine-specific.
"a compiler generator," w.m. mckeeman et al, p-h 1970.
jcc, afips 1968.
1993-08-07
see also:
pl/i array machine code ibm 360 univac 1100 icl system 4
cdc6000 cyber xds sigma-5 sigma-7 dec
pdp-10 xcom ibm system 370
Results 1 - 10 of 18 found about xpl: The XPL Programming Language
...XPL is the name of both the programming language and the compiler generator system (or TWS.....Usage of an XPL Based Compiler Generator System" Proceedings of the 14th annual ACM.....Thanks to David Wortman for volunteering to host the XPL website. Send comments, criticism..
http://www.cs.toronto.edu/XPL/, score=100, date indexed=October 5, 2005, 2:59 am The xPL Project :: Lite on the wire.. by design
...DCM is a Java based Device Configuration Manager for xPL. DCM will identify devices on.....An xPL interface module for the RGBLED controller board is now available. The RGBLED.....xPL-LCD Is a hardware serial device that talks native xPL.. and is used for displaying xPL..
http://www.xplproject.org.uk/, score=72, date indexed=October 5, 2005, 11:48 am Optimizing XPL Compiler
...The source code for the Optimizing XPL compiler is based on the McKeeman, Horning, and.....However, when an XPL source program has been compiled with that compiler, that object.....I've dug out a rather old compiler/compiler generator called XPL, and ported it to the..
http://www.users.bigpond.com/robin_v/xpl.htm, score=64, date indexed=July 4, 2005, 8:47 pm The XPL Translator Writing System (TWS)
...A compiler for the XPL language written in XPL. The original XCOM employed a mixed.....The BNF grammar for XPL is quite small, consisting of only forty-nine nonterminals. XPL.....The interface between XPL programs and the operating system. XCOM for System/360 was..
http://www.cs.toronto.edu/XPL/tws.html, score=56, date indexed=March 31, 2005, 11:13 pm Xpl - przełącznik klawiatury dla X-Windowsów
...Xpl..Xpl to prosty program, który pozwala na przełączanie układu klawiatury pomiędzy.....xpl-0.9.tar.gz .. Zobacz też: wmpl - ogonkologiczny aplet dla WindowMakera.. konsola po..
http://wizard.ae.krakow.pl/~jb/xpl/, score=54, date indexed=October 5, 2005, 5:04 am Yahoo! Groups : ukha_xpl
...xPL (eXtremely simPle protocoL) is a Home Automation Protocol designed by members of the.....ukha_xpl-unsubscribe@yahoogroups.com.. List owner: ukha_xpl-owner@yahoogroups.com.....ukha_xpl@yahoogroups.com.. Subscribe: ukha_xpl-subscribe@yahoogroups.com.. Unsubscribe..
http://groups.yahoo.com/group/ukha_xpl/, score=50, date indexed=April 11, 2005, 6:11 am XPL | Jay David | STL
...Jay David is a web designer living in St. Louis, Missouri..
http://www.explosion.nu/, score=45, date indexed=October 5, 2005, 9:32 am Changes to the XPL website since Feb 2001
...XPL home.....Restored broken link to DOS XPL port. 12 Mar 2002.. Website moved to cs.toronto.edu. 17.....Changes to the XPL website since Feb 2001.. 21 Jun 2004.. Correction: Site of 1968 FJCC..
http://www.cs.toronto.edu/XPL/chnglog.html, score=44, date indexed=March 31, 2005, 7:42 am Top XML : XPL
...Users will access XPL through one scripting language or another, depending on their need.....At XPL, you can explore the latest Web developments, or make original contributions to a.....Welcome to the resources site of the XPL eGroups mailing list. Our task is to create an..
http://www.vbxml.com/xpl/, score=44, date indexed=October 5, 2005, 3:57 am Suche: Registrierung: HB-XPL
...HB-XPL Lama HB-XPL of Helikopter Service Triet AG is fighting against a burning motor boat.....HB-XPL and Jet Ranger 206 HB-ZBU at a short stop at Appenzellerland (mehr von HB-XPL.....HB-XPL / landing at late afternoon (mehr von HB-XPL) Hinweis: Falls statt der Bilder..
http://www.flugzeugbilder.de/search4.cgi?srch=HB-XPL&stype=reg&srng=2, score=42, date indexed=April 19, 2005, 11:44 am
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