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Release 5.3 of Berkeley Logo is now available by anonymous FTP or Web. Versions are available for Unix, DOS, Windows, and MacOS. Berkeley Logo (a/k/a UCBLogo) is FREE SOFTWARE, with source code included. ------------- Logo is the educational programming language best known for its "turtle graphics" but also featuring easy and powerful facilities for computing with words and sentences. Sample projects included with the Berkeley Logo distribution range from a tic-tac-toe game to a Pascal compiler and a Logo implementation of Student, Daniel Bobrow's program that solves algebra word problems. Berkeley Logo is distributed under the terms of the GNU General Public License: You may redistribute it freely, and you may use it as a base for developing additional free software, but you may not use it as a base for commercial software products. The exact details are included in the distribution, in the file named GPL. Advantages of Berkeley Logo: * It's free. * It comes with source files (in C). * Logo programs are completely compatible among Unix, PC, and Mac. Disadvantages of Berkeley Logo: * It's relatively slow. * It doesn't do anything fancy about graphics. (One turtle.) This announcement has four more parts: * How to get Berkeley Logo. * Installation instructions. * Details about this release. * Pointers to other people's Berkeley-Logo-related distributions. ---------------------------------------- HOW TO GET BERKELEY LOGO: ---------------------------------------- FTP to ftp.cs.berkeley.edu and get any of the following files: pub/ucblogo/ucblogo.tar.Z Unix sources and documentation (compress form) pub/ucblogo/ucblogo.tar.gz Unix sources and documentation (gzip format) pub/ucblogo/blogo.exe DOS version, PKZIP format, including executables BL.EXE and UCBLOGO.EXE pub/ucblogo/ucbwlogosetup.exe Windows version, self-installing, with executable UCBWLOGO.EXE pub/ucblogo/ucblogo.sea Mac version, StuffIt format, w/executable Logo pub/ucblogo/ucblogo.sea.hqx Mac version, BinHexed StuffIt format, including executable Logo pub/ucblogo/usermanual Just the documentation file. Be sure to use BINARY transfer mode when retrieving the archive files! Alternatively, you can download Berkeley Logo from the World-Wide Web. You'll find pointers on http://http.cs.berkeley.edu/~bh/logo.html (The filenames above are links to filenames that include the version number, e.g., blogo52.exe; either name is okay. Anything other than the current version, if still online, is in the subdirectory pub/ucblogo/old.) ----------- The DOS version is in the form of a self-extracting PKZIP archive. Run BLOGO.EXE ; it will create two files, INSTALL.BAT and INSTALLU.EXE. Then run INSTALL to create a C:\UCBLOGO directory with the complete distribution. If you want to install Logo somewhere other than C:\UCBLOGO, you can say installu -d d:\foo\ to put it in d:\foo\ucblogo. DON'T FORGET THE "-d" PART! ----------- The Mac version is in the form of a BinHex-converted self-extracting StuffIt archive. To install it, just copy to your hard disk, un-BinHex it (this may be done automatically by your file transfer program), and double-click on it. ******************************************************************* MOTIVATE TEACHERS TO USE THE INTERNET If you want to learn about how to play on the net, this is where to start. Don't know how to turn on your computer? Hate this stuff? Is this is totally freakin' you out? Then You're one of us :-) Playing around is the key to learning. relax, you can start here, we take baby steps. <http://www.edu-cyberpg.com/Reasons_to_play_here.html> ******************************************************************* ---------- The Unix version is a compressed tar file. To install it, copy to your machine, then say uncompress ucblogo.tar tar -xf ucblogo.tar cd ucblogo configure make If you have gunzip, you can instead get ucblogo.tar.gz (better compression). ----------- The DOS, Windows, and Mac versions include a SOURCE subdirectory containing the C source files used to compile Berkeley Logo. If you don't want to play with the code, you can delete this directory and all its contents. You can also delete some or all of the contents of the DOCS directory, which has the usermanual in various formats (Postscript, PDF, HTML, INFO, TEXI). The HTML files are particularly huge, if you're looking for something to delete. (In the Unix version, the source files are in the top-level directory of the distribution.) In the source directory, the file plm is a Program Logic Manual that documents some of the inner mysteries of this interpreter. You should read _Structure and Interpretation of Computer Programs_ before you read plm. Also included is evaluator.ps, a beautiful one-page simplified flowchart of the evaluator to admire while reading plm. In the Unix version, if you want to save space, you can delete the entire ucblogo directory created by tar once you've done "make install". ---------------------------------------- INSTALLATION INSTRUCTIONS: ---------------------------------------- Unix version: the makefile compiles with optimization turned off. This is necessary to avoid mysterious garbage collection failures. (NOTE: On my HP 712, for reasons I don't understand, I had to compile the entire interpreter without optimization. But on other platforms, such as PCs running Linux and FreeBSD, it's sufficient merely to un-optimize mem.c. If that works on your machine, you can remove the "-O0" at the end of the CFLAGS line at the beginning of the makefile, after running configure.) --------- The DOS distribution includes two executable programs. BL.EXE runs on any DOS PC, but is limited to 640K of memory. UCBLOGO.EXE requires a 286-or-better processor, but is able to take advantage of extended memory if you have it. Read the README file for technical details. The BL.EXE version, for really old 8086 PCs, is frozen at version 3.6, because the garbage collection algorithm introduced in version 4.0 doesn't work well with really small memory. --------- The Windows version, named UCBWLOGO.EXE, requires Windows 95/98/Me/NT/2000/XP or later (not 3.1; sorry). It is distributed as a self-installing setup file. --------- The Mac distribution is for pre-OS-X Macs, but also works (at least for some people) in the "classic environment" under OS X. These days most people can successfully download binary files, so try ucblogo.sea first, because it's a smaller download. But if you can't get that to run, try ucblogo.sea.hqx for a BinHex version. For an OS X native version, you can use the Unix distribution. Thanks to Robert A. Burnham for these instructions: Install the contents of the Developer Tools CD that ships with OS X onto your system. OS X comes with a number of great Unix packages (e.g. emacs & perl), but the CD will install the additional tools needed to build UCB Logo. Download and install the most recent version of X Windows, XFree86 4.1.0. This is free software that is available on the web and you can download pre-built binaries for Darwin (the Open Source component of OS X). Warning, if you are downloading this over a modem, it will take you a while. Start here: http://www.osxgnu.org/software/Xwin/xfree86/ Download the Unix package for UCB Logo to your OS X machine. I downloaded it from my web browser (IE) and StuffIt automatically uncompressed the folder and placed in on my desktop. I then placed the folder into my home directory. Next, read the README file and run the 'configure' utility (they are both located in the ucblogo folder). Finally, type 'make all' and the executable program 'logo' will be created in the directory. Type 'make install' (as root) to copy the necessary files to /usr/local (or wherever you told configure to put them, if you did). To try it out, start up X Windows (which you should be able to do with the XDarwin icon which XFree86 installs in your Applications folder) and type 'logo' at the prompt in one of the terminal windows that will be on the screen. With any luck you'll see 'Welcome to Berkley Logo version 5.3'. ---------------------------------------- THIS RELEASE: ---------------------------------------- This is a maintenance release, just fixing a few disastrous bugs introduced in the 5.2 release. All platforms: Fixed crash applying anonymous procedure with number as name of optional parameter: APPLY [[[2 3]] [PR :2]] [5] Fixed bug about LOCAL inside tailcalled procedure inside REPEAT's instruction input affecting caller's variable. Fixed bug about APPLY of question-mark-format template clobbering local variables of the caller. Windows: Mac: Unix: Replaced logo.el in logo-mode to improve portability. ---------------------------------------- OTHER UCBLOGO-RELATED DISTRIBUTIONS: ---------------------------------------- MSWLogo is a free port of Berkeley Logo to Microsoft Windows done by George Mills. He has added a lot of Windows-specific capability to the language, so you can do cool multimedia stuff with it. Look in http://www.softronix.com/logo.html --- Adaptation francaise pour MSWLogo et UCBLogo: A startup file and documentation for UCBLogo in French is at http://www.algo.be/logo1/MSWlogo-fr.html Thanks to Francis Leboutte.
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