November 2002 - Oberon - mailman3.inf.ethz.ch

Re: [Oberon] Support for Realtek RTL-8139 with Native Oberon
by frey＠inf.ethz.ch 05 Jan '05

05 Jan '05

> I'm running Native Oberon on a Pentium-II class machine. > How can a network card such as, Realtek RTL-8139 be > configured in Native Oberon ? PCITools.Scan was able to > detect this card as a PCI device. The driver is currently only available for the new Bluebottle OS. http://bluebottle.ethz.ch It should not be too difficult to make a Native Oberon driver out of the Bluebottle OS driver. But... I have no time to do this myself. --Thomas Frey

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Input.Time
by Gérard Meunier 31 Jan '03

31 Jan '03

Hello, I've done some time measurements of program runs on Bluebottle, and I'm not sure that Input.Time() works correctly. I don't know if this fact is important, but my program uses the gc a lot. I find a discrepancy of ten times, more or less, between my watch (~ 60 s) and Input.Time() (6 s). My config string contains the item 'MHz="600"', which is right. Any ideas ? Regards. Gérard

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Tabs in Script or TextDocs
by pat＠picoworks.com 23 Jan '03

23 Jan '03

Has Script or TextDocs been extended anywhere to handle right, center or decimal tabs? "Compiler Construction" by Dr Wirth, produced on Oberon, shows right tabs in the table of contents but it may have been produced on V4. Thanks, Pat

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Hardware driver construction 'capacity building'.
by eas-lab＠absamail.co.za 29 Nov '02

29 Nov '02

-------- Newsgroups: comp.lang.oberon Subject: Re (2): Using REAL/INTEGER or LONGREAL/LONGINT > Stefan Salewski wrote: > > I wonder if the use of REAL and INTEGER datatypes is obsolete on > > modern computers. > > > > Any comments? > Michael Griebling <mg(a)comp-inspirations.com> wrote: > Embedded micros could still find the INTEGER & even the SHORTINT > types useful. Certainly the REAL numbers are much more efficient > on the 8- and 16-bit micros in common use in these applications. > > Michael G. Well purely on a practical level, related to oberon S3 - is this include in "modern computers"/systems ? You need a capability to keep on generating new drivers for the new hardware. (This used to be a big factor that kept MS. ahead of linux). As part of my effort to salvage dying S3 usage for possible minimum resource 3rd world usage I want to investigate the possibility of telco-inter-communicating between S3 machines, by 'manchester modem'. My reasoning being that manchester modem technology wrote/read data to cheap cassette recorders and that the 4 Khz telco bandwidth should also handle this ? I thought this task could be profitabily intergrated into a general tutorial (using succesive refinement) on developing hardware drivers for S3. The first can-of-worms that I fell into was cause by exactly the desire to ignore 'word size' and other lo-level realities for hi-level usage. eg. (* Switch speaker and amplifier on/off *) PROCEDURE Tone(b: BOOLEAN); (* Loudspeaker port address: 61H *) VAR s: SET; BEGIN SYSTEM.PORTIN (61H, SYSTEM.VAL(CHAR, s)); IF b THEN s := s + {0, 1} ELSE s := s - {0, 1} END; SYSTEM.PORTOUT (61H, SYSTEM.VAL(CHAR, s)) END Tone; I didn't find a tutorial on S3 style 'assembly', and hardware-type-persons don't want to analyse the transformation from: 'complement bits 0,3,5 and output to port(61)' to the corresponding S3 syntax. I few lines of 'macro/template' so that one doesn't need to switch the mind out of machine-code-thinking to oberon-implementation-of-sets -thinking would be a great asset !? So yes, if you pretend the lo-level universe does not exist, that's OK provided someone else handles the reality for you. -- Chris Glur.

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Re: [Oberon] BlueBottle: rebuild CD image; POST
by mcintosh＠vima.austin.tx.us 21 Nov '02

21 Nov '02

Thanks, I have added the chunker information to the POST exploration plugin where it is generating the snoop reply. That plugin also generates a Cookie that tells the URLs that have been visited. The new version is updated on the web page. The thing that confuses me is on the page called Submit, when I attempt to post a large file. A small text file uploads ok, both the file name and the file contents appear to go just fine. A larger file, such as a small document file from BlackBox, appears to be truncated. There is a discrepancy between the number of bytes available and the Content-Length. So I am reading and puzzling here. For the project to go, I need to be able to upload some .gif or .jpg images that may get large. ... In planning for the future, I don't notice anything that I recognize as "Riders" in the AosIO package. It appears that I have to read character at a time and handle them as they arrive. The buffers that are hidden down with the Receiver are not available (naturally). I can encapsulate this and do as is my will, but I wonder if there is a library component that does it already. I will soon get into actual content production, and I comprehend the SSMP approach pretty well. As soon as I can have students upload files, I think that I can do everything I need. Is the Session Management/Dynamic Web project at the point that it has stable documentation or interface? -- Aubrey | In your code, you open a ChunkedOutStream with the line | | NEW(chunker, w, out, request, reply); | | The creation of the chunker automatically fills in the transfer encoding in the reply header. | But you missed to write the reply header at all. So to correct this problem, add | | WebHTTP.SendReplyHeader(reply, out); | | before using the chunked stream the first time. | | FYI: Some current projects with the Web-Server: | - IMAP - Webaccess (almost finished, code upon request) | - Session Management/Dynamic Web (XHTML) Pages (more flexible than SSMP) | - https | - Teletext Web-Service | |

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Re: [Oberon] BlueBottle: rebuild CD image; POST
by frey＠inf.ethz.ch 19 Nov '02

19 Nov '02

> Somehow I had thought years ago that the Oberon > zip files were a custom format. .Arc is a custom format. That's why we switched to .zip (and to take advantage of the better compression). > I'm not sure that I see evidence that the output is chunked, but I > assume that it is supposed to be. So this is clearly a trouble area > in my sample code. In your code, you open a ChunkedOutStream with the line NEW(chunker, w, out, request, reply); The creation of the chunker automatically fills in the transfer encoding in the reply header. But you missed to write the reply header at all. So to correct this problem, add WebHTTP.SendReplyHeader(reply, out); before using the chunked stream the first time. FYI: Some current projects with the Web-Server: - IMAP - Webaccess (almost finished, code upon request) - Session Management/Dynamic Web (XHTML) Pages (more flexible than SSMP) - https - Teletext Web-Service

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BlueBottle: rebuild CD image; POST
by mcintosh＠vima.austin.tx.us 18 Nov '02

18 Nov '02

rebuild CD image ---- The file Aos.Tool is a script that facilitates the process of building an AOS filesystem image on a file that can be burned into a bootable CD. There are a small number of problems using it in the field. The source modules that are named in the Private group are not in the distribution. The .Mod extension of those modules can be replaced with the .Obx extension, and a correct Distribution tool does "compile." They must also be commented out of the Private group. In my production of a "custom CD" I did include files with the name Release.<base name> for the files that have that name in the Aos.Tool list. I added some extra commands to Aos.Tool so that I could add those few files to the .zip files. My thinking on this is that the Release CD should be idempotent under the build / install operators, and this change makes it closer to idempotent. I was also reluctant to rebuild the system on top of my working AOS partition. Fighting with that paradigm probably caused more misadventures than I was trying to avoid, however. There was some suprise also in working with ZipTools, after using OFSTools.SetDefault. The file shadowing did something that suprised me, though I didn't take good notes and have forgotten what it was. It wasn't misbehavior of the software, just another detail to be careful of when new users are working with new software. I was pleased to learn that WinZip reads the same format files that BlueBottle produces. Somehow I had thought years ago that the Oberon zip files were a custom format. However, windows doesn't know what to do with the <partition> ":" <path> format when the partition has more than a single letter. I like the format of my TarDump program slightly better than the current ZipTool format in that I could just edit the name before extracting the file, and the name (or entire path) could be changed. I did not find how to change a file name on extraction in the WinZip program, nor in the ZipTools program. POST ---- The experimental POST plugin for the web server is not in the distribution, and it is commented out of the Aos.Tool list of files. I really want POST for a project that I am working on, so I have worked on my own version. I have placed a directory http://cda.mrs.umn.edu/~mcintosa/BlueBottle and there are a couple of zip files in this directory related to the POST plugin. These files contain an initial static design for some web pages that will become server side modified pages, and return data from a database + calculations back to students. I am able to place these pages in the relevant directory FAT:/httproot/peer and I can read the pages from Netscape or Internet Explorer. The current POST plugin reads the HTTP headers and builds a debug web page that just echoes back header information. So much of the method extensions do work correctly. The problem that I am stuck on right now is that occasionally, when I submit from the page for the file upload, the Bluebottle server does not seem to get as many bytes as Netscape says that it is sending. I'm not sure that I see evidence that the output is chunked, but I assume that it is supposed to be. So this is clearly a trouble area in my sample code. ---- I put a fair amount of effort into making a Coco grammar for the RFC for a URI, only to realize later that this only applies to "GET" methods and not to "POST" methods. If one really obscure production is removed, the grammar is pretty well behaved. I'll try to remember to put a .zip file for this onto the web later.

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cannot boot Bluebottle
by Alexander Hofmann 11 Nov '02

11 Nov '02

Hello, when I want to start Bluebottle from disk or CD, after the system launches and the string "Oberon loading...." has been displayed, the system immediately reboots again. I use a Cyrix 233Mhz CPU with the Elsa Erasor II Graphics-Card. I also tested an Diamond-Viper 330. Nothing changed. I also tested some Init-Strings. I can start Native Oberon (last Beta or Alpha) without any such problems. Do you have any idea what could be wrong? I would be pleased to hear from you. Yours sincerely, Alexander Hofmann. ______________________________________________________________________________ Wie ware das: mehrere E-Mail Adressen - aber nur ein Postfach ? Kein Problem mit WEB.DE FreeMail - http://freemail.web.de/features/?mc=021127

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Bug in Gfx (Clipping)
by Stefan Salewski 05 Nov '02

05 Nov '02

Hello, I am using the Gfx-package of Erich Oswald for drawing- operations in a Plotter-Gadget for ETH-Native-Oberon. I have programmed this Gadget more than 18 months ago, it is working for my personal needs, but it is not completed. Currently I plan to complete and improve it. I remember there was a clipping problem in the very first version of this gadget, but I was very busy at that time and have not searched for the reason. For testing if clipping of Gfx works correct, I have replaced the Procedure Render() in module GfxDemo.Mod of Erich Oswald with this one: (* render curve on context *) PROCEDURE Render (frame: Frame; ctxt: Gfx.Context); BEGIN Gfx.SetStrokeColor(ctxt, frame.fgCol); Gfx.SetFillColor(ctxt, frame.fgCol); Gfx.SetLineWidth(ctxt, 1); Gfx.DrawRect(ctxt,0,0,frame.W,frame.H,{Gfx.Stroke}); END Render; I have done no other changes. If I open an empty Panel-Doc and insert the demo-gadget with Gadgets.Insert GfxDemo.NewFrame ~ in this panel, then I get a white rectangle with a black frame. If I resize and move this rectangle, then it occurs that a black line remains on the right and top edge of the rectangle. I think this is a bug in clipping. I have tested it with last alpha-release of ETH-Native-Oberon (August) and in the Oberon-Window of Bluebottle release May-2002. I asked Erich Oswald about it, but he is currently not using Oberon and can not test it. Best regards Stefan Salewski

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First Call for Papers, JMLC-2003 and EuroPar-2003
by muller＠inf.ethz.ch 02 Nov '02

02 Nov '02

----- Forwarded message from Laszlo Boeszoermenyi <laszlo(a)itec.uni-klu.ac.at> ----- Dear Colleague, It is a pleasure for us to announce the following 2 conferences held in the last week of August 2003 at the University Klagenfurt, Austria. (We apologize if you get this announcement more than once.) 1. The 6th Joint Modular Languages Conference (JMLC 2003) Klagenfurt, Austria, August 25-27, 2003, for further details see: http://jmlc-itec.uni-klu.ac.at/ 2. The 9th International Conference on Parallel and Distributed Computing (EuroPar 2003), Klagenfurt, Austria, 26 - 29 August, 2003, for further details see: http://europar-itec.uni-klu.ac.at/ Important dates: * 09 February 2003: Submission Deadline * 01 May 2003: Acceptance Notification * 31 May 2003: Camera Ready Mission Statements: 1. The mission of JMLC is to explore the concepts of well structured modular software and those of teaching good design and programming style. We are especially interested in the construction of large and distributed software systems. We also invite papers on software engineering aspects in new and dynamic application areas, such as multimedia and pervasive systems. The conference normally attracts ca. 100 participants coming from universities, research centers and industry. 2. Euro-Par is the annual series of international conferences dedicated to the promotion and advancement of all aspects of parallel and distributed computing. New and interesting topics are proposed, like Peer-to-Peer Networks, Distributed Multimedia Systems as well as High-Performance Object-Oriented and Middleware Systems. For the first time, we promote a Demo Session for the presentation of applications. The conference normally attracts more than 300 participants coming from universities, research centers and industry. The conferences will have on the 25th and 26th of August some common tutorials, keynote talks and a common panel. Please find the detailed Call for Papers with all related information on the home pages given above. Best regards Laszlo Böszörmenyi -- Univ. Prof. Dr. Laszlo Böszörmenyi Institute for Information Technology, University Klagenfurt e-mail: laszlo(a)itec.uni-klu.ac.at http://www.ifi.uni-klu.ac.at/ITEC/Staff/Laszlo.Boszormenyi Snail mail: Universitaetsstr. 65-67, A-9022 Klagenfurt, Austria Tel: +43-463-2700-3611 (3603 secretary), Fax: +43-463-2700-3699 -- Pieter Muller, Computer Systems Institute, ETH Zurich Native Oberon OS: http://www.oberon.ethz.ch/native/

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