[MUD-Dev] Internal Mud Languages

Jon A. Lambert jlsysinc at ix.netcom.com
Mon May 26 12:46:15 New Zealand Standard Time 1997


> From: Jeff Kesselman <jeffk at tenetwork.com>
> At 10:49 PM 5/25/97 PST8PDT, you wrote:
> >PCCTS code is the most readable, but I have yet to find a good
> >example of a simple virtual machine using PCCTS.
> 
> Erm...
> 
> I don't follow this. PCCTS is for building langauge compielrs and
> translartors, not VMs.

Right. I am looking for a descriptive/simple sample of the whole task 
from source language to target VM implementation.  

There are many YACC and PCCTS grammar samples with good descriptions
of the source.  Scott Stanchfield's PCCTS example and tutorial is 
excellent.  That is, I am able to follow it *grin*.  

I have found little help in the "target" area or PCCTS output whether 
it be native 486 code or tokenized output to some undefined VM.  

Maybe I should be a little more specific.  Are there any sample/simple
documented VMs available?  In particular, those designed with 486 
architecture in mind?  

PCCTS and BISON would seem to be overkill for me in the translation 
department.  In particular, I am extremely leery of PCCTS's ability 
to clean-up its memory with the C++ implementation. 


JL



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