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<H1>Re: Greetings. :)</H1>
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<LI><em>To</em>: Multiple Recipients of MUD Design Mailing List <<A HREF="mailto:mud-dev#null,net">mud-dev#null,net</A>></LI>
<LI><em>Subject</em>: Re: Greetings. :)</LI>
<LI><em>From</em>: Jeff Kesselman <<A HREF="mailto:jeffk#tenetwork,com">jeffk#tenetwork,com</A>></LI>
<LI><em>Date</em>: Wed, 09 Apr 1997 23:15:43 -0700</LI>
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<PRE>
At 11:48 AM 4/9/97 -1000, you wrote:
>On Mon, 7 Apr 1997, Chris Gray wrote:
>
>:Ok, terminology differences. I think of bytecodes as interpreted. Perhaps
>:'simulated' is a better word. 'Emulated'?
>:
>:Perhaps we can come up with a gradient (I'm sure this has been done
before!),
>:and we can all point to where we are on it:
>:
>:1. native machine code
>:2. threaded code
>:3. bytecode
>:4. parse tree traversal
>:5. pre-tokenized interpretation
>:6. straight text interpretation
Hmm, theres a wide range in 3.
Ild devide it as follows...
3a) Byte code on a true VM (generally a stack based system with a small number
of highly efficiently parsed opcodes). My Kelvin VM is this, a
stack based OO machine with about 15 opcodes total.
3b) Tokenized form. Thsi is where every statement (if, while, etc) has a
corrosponding byte code. Coldmud/ColdX does this.,
JK
>:
>:You're at 3? I'm at 4 in AmigaMUD, 6 in ToyMud. However, differences
>:like the need for run-time symbol lookup, or type conversions, can easily
>:move something up a notch in execution overhead. LP is at 3 now isn't
>:it? Are MOO and ColdX at 3 as well? Let's see, REXX is 5? Tcl is 6.
>:Shell scripts are 6+, Perl is 5? This is just *so* relevant to MUDs! :-/
>
>Erm. I'm a rather strange hybrid of 1, 2, and 4. But... well, I'm not sure
>what you mean by parse tree transversal... what I've got is referenced
>blocks of native code getting tacked together by dereferenced function
>pointers, dynamicly when needed, staticly when possible. In theory, the
>whole chunk should be about 3/2 machine, but I'm coming from a PPC asm
>bias, and that neglects any compiler optimizations rendered impossible by
>this scheme. Its also about 3/1 machine for memory, so far... The flaw is
>that it renders bootup a much longer process, as most of the work gets
>done then, and is impossible to save in a reusable form, as some addresses
>are locally dependent at startup time, thanks to the dynaload provisions,
>in part. Any suggestions or criticisms by the more experienced?
>
> __ _ __ _ _ , , , ,
> /_ / / ) /_ /_) / ) /| /| / /\ First Light of a Nova Dawn
> / / / \ /_ /_) / \ /-|/ |/ /_/ Final Night of a World Gone
>Nathan F. Yospe - University of Hawaii Dept of Physics - yospe#hawaii,edu
>
>
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<STRONG><A HREF="msg00070.html">six degrees of submission ... er, compilation.</A></STRONG>
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<ul><li>Thread context:
<BLOCKQUOTE><UL>
<LI><STRONG>Re: Greetings. :)</STRONG>, <EM>(continued)</EM>
<ul compact>
<LI><strong><A NAME="00063" HREF="msg00063.html">Re: Greetings. :)</A></strong>,
Greg Munt <a href="mailto:greg#uni-corn,demon.co.uk">greg#uni-corn,demon.co.uk</a>, Thu 10 Apr 1997, 01:36 GMT
</LI>
<LI><strong><A NAME="00064" HREF="msg00064.html">Re: Greetings. :)</A></strong>,
Nathan Yospe <a href="mailto:yospe#hawaii,edu">yospe#hawaii,edu</a>, Thu 10 Apr 1997, 04:42 GMT
</LI>
<LI><strong><A NAME="00067" HREF="msg00067.html">Re: Greetings. :)</A></strong>,
Jon A. Lambert <a href="mailto:jlsysinc#ix,netcom.com">jlsysinc#ix,netcom.com</a>, Thu 10 Apr 1997, 12:20 GMT
</LI>
<LI><strong><A NAME="00068" HREF="msg00068.html">Re: Greetings. :)</A></strong>,
Jon A. Lambert <a href="mailto:jlsysinc#ix,netcom.com">jlsysinc#ix,netcom.com</a>, Thu 10 Apr 1997, 12:47 GMT
</LI>
<LI><strong><A NAME="00069" HREF="msg00069.html">Re: Greetings. :)</A></strong>,
Jeff Kesselman <a href="mailto:jeffk#tenetwork,com">jeffk#tenetwork,com</a>, Thu 10 Apr 1997, 13:06 GMT
</LI>
<LI><strong><A NAME="00071" HREF="msg00071.html">Re: Greetings. :)</A></strong>,
Jeff Kesselman <a href="mailto:jeffk#tenetwork,com">jeffk#tenetwork,com</a>, Thu 10 Apr 1997, 13:46 GMT
</LI>
<LI><strong><A NAME="00076" HREF="msg00076.html">Re: Greetings. :)</A></strong>,
Shawn Halpenny <a href="mailto:rsh#dos,nortel.com">rsh#dos,nortel.com</a>, Thu 10 Apr 1997, 22:45 GMT
</LI>
<LI><strong><A NAME="00080" HREF="msg00080.html">Re: Greetings. :)</A></strong>,
Chris Gray <a href="mailto:cg#ami-cg,GraySage.Edmonton.AB.CA">cg#ami-cg,GraySage.Edmonton.AB.CA</a>, Fri 11 Apr 1997, 13:01 GMT
</LI>
<LI><strong><A NAME="00087" HREF="msg00087.html">Re: Greetings. :)</A></strong>,
clawrenc <a href="mailto:clawrenc#xsvr1,cup.hp.com">clawrenc#xsvr1,cup.hp.com</a>, Sat 12 Apr 1997, 04:31 GMT
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</ul>
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</UL></BLOCKQUOTE>
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