Squeak-dev May 1998

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Squeak Performance
by Laurence Rozier 05 May '98

05 May '98

Is there any data on Squeak performance relative to Java or C++? Thanks, -Laurence

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Squeak Security
by Laurence Rozier 05 May '98

05 May '98

Is anyone working on security classes a la Java for Squeak? Thanks, Laurence

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Re: question about BufferMsecs in SoundPlayer
by CYNTHIA NELSON 05 May '98

05 May '98

Hi Everyone, Thanks John and Andreas for all your help. To answer your questions about my system. On my NT box (also boots to Win 95) I have an AMI dual processor motherboard with two Pentium Pro 200 chips, 128MB of RAM, a CreativeLabs AWE64 sound card and also the harddrive I use for Squeak is fairly new with a fast seek time. Therefore, I do not think the hardware is a problem. I did set UseReverb := false and also used the "remark out" method. I still had to do the: SoundPlayer startUp; stopReverb. to stop the reverb. I tried your suggestion of resetting the sampling rate and I got an error message when I tried to run the workspace. I still cannot get all the voices to play clearly with NT. I kind of thought playing with the Buffer to fix this problem might be a waste of time so thanks for verifying that. I did try changing the sound card settings with NT to no avail. Here is the GOOD news. Even though I was having the same problem with Win95, I reset the software for my sound card. The new settings fixed the problem and the sound from Squeak is really good. I will just work on my sound project with Win95 and wait for 2.0 to continue working with sound using NT. I sort of ran into this little adventure on my way to doing something else. I suppose I should get back to the major task at hand. Thanks again. Cindy Nelson At 10:31 AM 5/3/98 -0700, you wrote: >>Re: Problem #1. >>> >>>In order to get rid of a rather abundant reverb, it seemed >>>just resetting the reverb to false in the initialization file >>>did not turn it off so I used this. I do not know why it works >>>like this. >>> >>>SoundPlayer startUp. >>>SoundPlayer stopReverb. >>>PluckedSound bachFugue play. >> >>You're right, that's what you have to do right now. >>I'll look into this. > >Found the problem. The fix will be in 2.0. (If you want >to fix it yourself, just remove the "UseReverb := true" >statement in SoundPlayer>initialize.) > > -- John > > > > **************************************************************************** ******************************* Cynthia L. Nelson Phone: (770) 382-8627 202 Jimmie Nelson Rd SW Fax (770) 382-8630 Kington, GA 30145 e-mail: cindynelson(a)abraxis.com

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HotDraw for Squeak ?
by Stefanie Thies 05 May '98

05 May '98

I am a student at the university of Paderborn, and I want to write a Scientific Visualisation Tool. I saw HotDraw and believe, that this is a very good starting point. Has anyone tried to transport it to Squeak? What experience s/he has made ? What is the best version for the transport ? I am glad about every hint and any help would be greatly appreciated! Thank you very much! Stefanie

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Re: Smalltalk-80 tape
by glenn 04 May '98

04 May '98

At 10:49 AM 5/4/98 am, Stephen Travis Pope wrote: > >> We've moved office last month and, during the packaging, we've found a >> QIC tape labeled: "Smalltalk-80 Version 2.4 for Sun 386i Workstation, >> Distribution Set 2/A." Does it worth anything ? > >Adding to Glenn Krasner's "bit of history," the tape you have is a ParcPlace >v2.4 release. It's not worth anything special, I'm obliged to point out that it is still protected by (now) ObjectShare copyright, so the code in it can't be used willy-nilly. There are portions of that code which we still want to protect, and there is a lot of that code that is already available and other portions we'd be willing to make available when we get cycles to deal with Sam's request. >except to a collector of software that was actually ported to the 386i... :-) glenn

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Status/Content of Version 2.0
by Jeffrey L. Odell 04 May '98

04 May '98

As a newbie to Squeak (although not Smalltalk), I'm excited with the work I see going on in this environment. I've seen references over the past few days to version 2.0, but I have not found a web page that describes what is in this release. Can someone point me to the right place to view this information? TIA - Jeff Odell Esprit Health, LLC

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Re:Smalltalk from Xerox
by glenn 04 May '98

04 May '98

Xerox licensed the initial Smalltalk-80 system (on which Squeak was based) to four companies including Apple in 1980-1981. A couple of years later, Xerox licensed the "Version 2" image more generally--with was the basis of products available from Tektronix on their 4400-series machines, from Softsmarts on PCs, and others. I don't recall the actual date, but I believe that by 1982 Xerox Special Information Systems had started licensing Smalltalk-80 on the Xerox 1100 ("Dolphin") machines. ParcPlace Systems, at the time a group within Xerox, shipped its first products in 1986 on Sun workstations. glenn At 08:35 AM 5/4/98 -0400, Allen Stoltzfus wrote: >TO: All > >I understand that sometime in 81-82 Xerox made Smalltalk available at a nominal fee. (I believe this was the time that a small company's Rosetta Smalltalk stopped shipping.) > >Can you confirm and can you substantiate this date? Or was it later. Thanks. > >Allen > >----- >Fairfield Language Technologies >(800) 788-0822 * (540) 432-6166 * FAX (540) 432-0953 >Email: allens(a)trstone.com >Internet: www.trstone.com > > > >

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Re: HotDraw for Squeak ?
by stp＠limbo.create.ucsb.edu 04 May '98

04 May '98

I have ported my DisplayList framework (similar in scope to HotDraw, but simpler) to Squeak. It's in the STP11 goodies collections or the Siren package. stp (PS: In the future, it will be integrated with Morphic.) _ Stephen Travis Pope _ Center for Research in Electronic Art Technology (CREATE) _ Dept. of Music, Univ. of California, Santa Barbara (UCSB) _ stp(a)create.ucsb.edu, http://www.create.ucsb.edu/~stp/

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Re: Should FileDirectory paths have a dirsep on the end or not?
by Maloney 04 May '98

04 May '98

At 2:20 PM -0700 5/2/98, Tim Rowledge wrote: >I found a confusion in the treatment of the paths held by FileDirectory >whilst rying to make PWS run on my Acorn. Basically, the PWS code is >assuming that there is a separator character at the end of the path (ie >wibble::myDisc.foo.bar. ) whereas I had rather thought that they didn't. The intended spec is that sending pathName to an instance of FileDirectory (or one of its platform dependent subclasses) should return a pathName that does NOT end in a separator character, so your directory primitives are correct. We should fix the PWS code to not expect a trailing separator, then make FileDirectory class>on: strip off a trailing separator if one is supplied. Meanwhile, you'll probably just want to work around the problem. -- John P.S. Do you have a pointer to the problem methods in PWS? I noticed that ServerAction>serverDirectory is assumed to return a path ending in a delimiter for convenience, but that seems fair since it is used only as a prefix string to construct file names.

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Unidentified subject!
by Allen Stoltzfus 04 May '98

04 May '98

TO: All I understand that sometime in 81-82 Xerox made Smalltalk available at a nominal fee. (I believe this was the time that a small company's Rosetta Smalltalk stopped shipping.) Can you confirm and can you substantiate this date? Or was it later. Thanks. Allen ----- Fairfield Language Technologies (800) 788-0822 * (540) 432-6166 * FAX (540) 432-0953 Email: allens(a)trstone.com Internet: www.trstone.com

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