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From: mattack@eskimo.com (Matt Ackeret)
Subject: Re: LISP IF: AdvSys is now DROOL
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References: <507gm4$bdh@prometheus.acsu.buffalo.edu> <322B9873.49EB@ca-probate.com> <50h8vc$b3m@prometheus.acsu.buffalo.edu>
Date: Tue, 3 Sep 1996 19:18:29 GMT
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In article <50h8vc$b3m@prometheus.acsu.buffalo.edu>,
Phil Goetz <goetz@cs.buffalo.edu> wrote:
>>From markwelch@ca-probate.com Mon Sep  2 22:33 EDT 1996
>>Subject: Was AdvSys written in Prolog?
>>
>>I thought David Betz' ADVSYS system was written using Prolog or a 
>>similar language.  There was an article about it in BYTE magazine a 
>>while ago (maybe even a decade ago).
>
>David Betz updated AdvSys in 1993.  It's now called DROOL
>(Dave's Recycled Object-Oriented Language).  It's in XLISP,
>and runs on the Mac.  (LISP is not similar to Prolog.)
>See Dr. Dobb's Journal, Oct. 1993, p. 74-78, for DROOL.
>But thanks anyway.

Unless you've heard something since, he hasn't finished DROOL (or at least 
hasn't released it).. The magazine article was a bit premature as he hadn't
actually implemented  all of the things the magazine article described. (Which
is somewhat reasonable because of magazine lead times).  Are you sure it was
in XLISP? I thought there was a C version too..  In e-mail discussions with 
David Betz, he was planning on doing Mac and Windows versions, but longer term
was thinking of doing a DOS version (i.e. text only) too..  He seems to not
be at Apple anymoe so I don't know how to contact him.
-- 
unknown@old.apple.com		Apple II Forever
These opinions are mine, not Apple's.
