Path: news.media.mit.edu!grapevine.lcs.mit.edu!news.lcs.mit.edu!pgs From: pgs@thillana.lcs.mit.edu (Patrick Sobalvarro) Newsgroups: comp.lang.logo Subject: Re: Amiga Logo implementations Followup-To: comp.lang.logo Date: 14 Feb 1994 16:09:40 GMT Organization: MIT Laboratory for Computer Science Lines: 18 Message-ID: References: <1994Feb10.020349.5519@cam.compserv.utas.edu.au> <1994Feb12.031105.8270@cam.compserv.utas.edu.au> <1994Feb13.004102.25735@random.ccs.northeastern.edu> NNTP-Posting-Host: thillana.lcs.mit.edu In-reply-to: geb@halcyon.com's message of Sat, 12 Feb 1994 23:01:24 -0800 Commodore 64 Logo was a port to the C64 of Terrapin's Logo for the Apple II, which was in turn an enhanced version of MIT's Logo for the Apple II. MIT's Logo for the Apple II was written at the (long defunct) MIT Logo Group by Steve Hain, Leigh Klotz, and me, under the direction of Hal Abelson. Leigh and I enhanced it for Terrapin's Apple II version, and Leigh did further enhancements and the port to the C64. The dialect is very similar to the original MIT PDP-11 Logo dialect (but without line numbers), and so it is similar to TI 99/4 Logo and different from the LCSI dialect. In particular, the consequent of IF is not placed in parentheses. These Logo implementations were also different from Terrapin Mac Logo, which Leigh and I wrote later and which has been ported by Terrapin to the IBM PC -- that version of Logo uses a dialect which is much more similar to LCSI Logo's. -P. Sobalvarro