Squeak-dev December 1998

squeak-dev@lists.squeakfoundation.org

125 participants
236 discussions

couple of (non squeak) questions
by David Farber 02 Dec '98

02 Dec '98

i've got a couple of questions that aren't squeak related, but i thought that there would be a fairly high probability that this list could point me in the direction of the info i am looking for. 1) where can i get my hands on the algorithms needed to calculate sunrise and sunset? (phase of the moon, moonrise and moonset would be nice too). i've picked up a book or two that purported to explain the matter, but they always seemed to lose me. (the math shouldn't be a problem; i did the obligatory 6 quarters of calculus to get my EE degree. hmmm...now that i think about it, maybe that is the problem.) 2) where can i get a technical description (ie detailed enough that i could reproduce the program) of the Eliza program? (the Eliza program, if i haven't mixed up my references, was written back in the 60's and took the user's natural English input, modified it, and spit it back out such that it appeared to be able to converse with you). what i would like to do is put this program on a web page so you could chat with it in a chat room. any tips, pointers, info appreciated! dave -- j. david farber oo architect+mentor numenor labs incorporated in sunny boulder colorado dfarber(a)numenor.com www.numenor.com

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Ian's Suggested sound kludge makes things worse.
by Bill Cattey 01 Dec '98

01 Dec '98

As Ian suggested, I fetched the sources, uncommented the /*success(FALSE)*/ in the #definition of FAIL() near the top of sqUnixSound.c and compiled. "FALSE" is undefined, so I had to change the code to "false". That's not the problem. Back on 12 November Ian pointed out: Excerpts from pm.squeak: 12-Nov-98 Re: Latest updates Ian Piumarta(a)inria.fr (1033*) > Because, under Unix, failing the primitive opens up a "a primitive has > failed" notifier at *really* inconvenient moments. E.g: > SoundPlayer class(Object)>>error: > SoundPlayer class(Object)>>primitiveFailed > SoundPlayer class>>primSoundStop > SoundPlayer class>>stopPlayerProcess > SoundPlayer class>>shutDown > SystemDictionary>>shutDownSound > SystemDictionary>>processShutDownList > SystemDictionary>>snapshot:andQuit: > ScreenController>>quit > ScreenController>>yellowButtonActivity IE when one tries to quit. Well, it does. This resolves the confusion I raised earlier somewhat, IE what the default distributed VM should and should not do under UNIX. Does this mean we should run in Tim Rowledge's suggested kludge instead? Excerpts from pm.squeak: 18-Nov-98 Re: Bug: disableSounds pref.. Tim Rowledge(a)interval.co (1298*) > I get around this problem on Acorn by making the machine specific sound > functions cheat. So far as I recall, this basically only needed > snd_InsertSamplesFromLeadTime(int frameCount, int srcBufPtr, int > samplesOfLeadTime) { > // return frameCount to pretend the buffer was filled > return frameCount; > } > and > snd_Start(int frameCount, int samplesPerSec, int stereo, int semaIndex) { > return true; > }

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Re: New CompiledMethod format images available
by Pennell's 01 Dec '98

01 Dec '98

I for one would be happy to see the 2.3 Beta period extended beyond the normal period if we could get these changes incorporated. We will get a lot more experimentation with the new source pointer objects if its included in a standard released VM. -david >Unlike with the little endian bitblt, I'm not going to try and push this >stuff; if people want to use it, let's say so and do it, otherwise I'll >save my time for building airplanes. Since the 2.3 needs a new vm anyway, >and the source/changes files have got rather big, how about doing a big >cleanup, changing method format, clean out the split instvar numbering, >condense the sources and feel better for Solstice? Sort of make it all >squeaky clean :-) Oh yeah, all the non-essential prims should lose their >numbers and be named.

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Re: New CompiledMethod format images available
by Eliot & Linda 01 Dec '98

01 Dec '98

Tim Rowledge wrote: > > I have just put a pair of zip files out on my website with the latest versions > of the new CompiledMethod format work I have been doing. See http://sumeru. > stanford.EDU/tim/pooters/squeak.html . Cool! Have you copied the "encode short methods with SmallIntegers" idea from VisualWorks? You should; (e.g. go measure the impact); we wouldn't mind. _______________,,,^..^,,,_______________ Eliot

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Re: New CompiledMethod format images available
by JArchibald＠aol.com 01 Dec '98

01 Dec '98

At 11/30/98 10:28:26 PM EST, elcm(a)pacbell.net writes: << that was supposed to go to Tim, not to the list >> I for one was interested in the comment. I would assume that others may also. Jerry.

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Squeaky Sounds on a G3 Powerbook
by Mark Guzdial 01 Dec '98

01 Dec '98

I started a Squeak Swiki page on Sounds in Squeak, and created another page off that to talk about my experiences with trying to get a variety of sound stuff to work on G3 Powerbooks (http://minnow.cc.gatech.edu/squeak.477). Some of the open questions that some out here may know about: - There doesn't seem to be a way to "close" a G3 Powerbook modem/printer port, so rebooting is the only way to switch between apps (even AppleTalk) that don't close the port well. - I can't figure out any way to get OMS (necessary for Siren) to recognize my modem/printer port. I got it working fine with my PowerMac 6100, so it's not the synthesizer or interface. - MIDI input on Squeak 2.3beta is really fuzzy. The input itself is probably going fine, but 2.3beta then tries to play the input note via the internal synthesizer, and the sound quality is noisy on the G3PB. Are other people finding a way to get it to work more smoothly? Thanks! Mark -------------------------- Mark Guzdial : Georgia Tech : College of Computing : Atlanta, GA 30332-0280 (404) 894-5618 : Fax (404) 894-0673 : guzdial(a)cc.gatech.edu http://www.cc.gatech.edu/gvu/people/Faculty/Mark.Guzdial.html

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