April 2003 - 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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Re: [Oberon] Port of XML to Native/Plugin Oberon (was Re: Antwort: DAV porting question)
by Edgar＠EdgarSchwarz.de 08 Jul '03

08 Jul '03

John Drake <jmdrake_98(a)yahoo.com>: > Ok. Here's the code. > http://freezope2.nipltd.net/jmdrake/Oberon/xmlport.zip Thanks John, I will give it a try on the weekend. Regards, Edgar -- edgar(a)edgarschwarz.de "http://www.edgarschwarz.de" "http://www.edgar-schwarz.de/forum/oberon" Running Active Oberon Make it as simple as possible, but not simpler. Albert Einstein

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Version control
by Felix Friedrich 01 Jun '03

01 Jun '03

Hello everybody, I have a problem that probably most of you would consider as "standard" but, still, I have no solution. I have been an Oberon programmer since some years now and have been working in cooperation with other people, we have written some packages together and up to now did the version control by hand, i.e. mainly by oral agreements. Now I am confronted with the situation that more and more people are working with some of the modules and sometimes extend them or correct errors or simply add new capabilities to them. More or less regularly I have to synchronize the versions which will become a problem soon since even more of us are becoming Oberon users. Does anyone of you have an automatic version control for Oberon (with logging in / out etc.)? Or maybe some of you can write some practical experience with Oberon-Version control? We are working with the PlugInOberon under Windows, the Linux-Version and (still experimental) with Bluebottle. Felix -----BEGIN PGP SIGNATURE----- Version: PGP 8.0 (Build 294) Beta iQA/AwUBPb0WlkxdycIDx9VEEQLNcQCfV6Vvh6xm8wgomQ6Fy1fuGjXFq0IAn1qT 3wWElF69eNppXaSyxI2tKEhL =rmRz -----END PGP SIGNATURE------- Felix Friedrich Institut für Biomathematik und Biometrie GSF - Forschungszentrum für Umwelt und Gesundheit, GmbH Ingolstädter Landstraße 1, D-85764 Neuherberg Tel: ++49 89 3187 2436 email: friedrich(a)gsf.de --

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Win32 Plugin Oberon , status report V
by Felix Friedrich 09 May '03

09 May '03

Hi everyone, although I was really working hard on the new WinPluginAos, it is not yet all done. I had some problems with deadlocks and with tracing bugs I have produced while not thinking deep enough before making changes to the garbage collection parts etc etc... [which wasn't only bad, I have really learned a lot!] Today it seems to be quite stable. I will give a more detailed overview when I have done some more steps in the next days. Some of you mentioned, that they need a version before easter (this year). It is too early to publish the current version now but for those who need an intermediate release: Please contact me (friedrich(a)gsf.de) Felix. -----BEGIN PGP SIGNATURE----- Version: PGP 8.0 (Build 294) Beta iQA/AwUBPb0WlkxdycIDx9VEEQLNcQCfV6Vvh6xm8wgomQ6Fy1fuGjXFq0IAn1qT 3wWElF69eNppXaSyxI2tKEhL =rmRz -----END PGP SIGNATURE------- Felix Friedrich Institut für Biomathematik und Biometrie GSF - Forschungszentrum für Umwelt und Gesundheit, GmbH Ingolstädter Landstraße 1, D-85764 Neuherberg Tel: ++49 89 3187 2436 email: friedrich(a)gsf.de --

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compiler restriction
by Soren Renner 01 May '03

01 May '03

No more than 2**14 - 1 pointers may appear in a record or the compiler (the one that comes with the latest Bluebottle) chokes. How difficult would it be to change this restriction, so that TYPE ar=ARRAY 500 500 500 OF OBJECT would be acceptable? Yes, I really have a reason to do this . . . sr

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Re: [Oberon] Controlling Aos with VNC: a small report > timing
by eas-lab＠absamail.co.za 30 Apr '03

30 Apr '03

"Patrik Reali" <reali(a)acm.org> wrote: > According to two local gurus, my laptop is sending the requests to the VNC > server too fast, same to a lesser degree for the desktop. The only solution > to this is to use a slower machine or to trottle the network:

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Re: Oberon digest, Vol 1 #209 - 2 msgs
by Soren Renner 30 Apr '03

30 Apr '03

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Hacking S3 fonts
by eas-lab＠absamail.co.za 26 Apr '03

26 Apr '03

I have not yet looked at how the data structure(s) of *.Scn.Fnt relate to the font set. Except to note that OB2ULINE.Scn.Fnt has extra chars added to Oberon10.Scn.Fnt , and the size is increased from 2303 to 2777. And Shanghai.Scn.Fnt = 21944 bytes; has big arty pictures - try it ! Perhaps those who know the data structure(s) could see that my idea is not viable, and save me looking deeper. 1. Is this the correct understanding of a glyph: my present font shows "o" and "l" as an oval and a vertical line; by repositioning these 'glyphs', we can build the chars: "pbqd" ? 2. this leads to the main question. Here's an answer I got: > No none of the Indian typewriters type a single character and > then step like in English typewriter. So apparently the (all of the many) indian script(s) are 'built up' by 'overwriting glyphs', before moving on to the the next char. In principle do you see any problem in using the existing system to: - construct an 'alphabet' of glyphs = set-A; - extend the existing system to be able to merge the bit-patterns corrresponding to elements of set-A, and place the merged bit pattern in a temporary *.Scn.Fnt . - extend this further to be able to reposition any glyph/bit-pattern before merging it. ?? The idea would be to be able to (eg.) construct "E" from 2 glyphs and some 'positioning commands'. I'm guessing that this is how indian typewriters work. If this is feasible, I want to take a laptop to india and let some school kids construct their native script for n-o. Initialy I'm interested in Malayalam. Does anybody see problems with this idea - before I start. Chris Glur. --

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Controlling Aos with VNC: a small report
by Patrik Reali 25 Apr '03

25 Apr '03

I just installed a 5 year old machine (dual P-II 400MHz) with Aos. The VNC server is installed at startup in AosConfig.XML. The machine has no screen, no mouse, and is remotely controlled; it sits in my closet so that no space is used and the constant noise disturbs nobody. Everything is connected through a 100Mbit/s local network. This configuration works nicely and I can control the machine from any VNC client. Now. But getting there wasn't trivial. First: to do the same, add the following lines to your AosConfig.xml <Section name="Autostart"> <Setting value="WMVNCView.Install Aos password 5901 0 0 1024 768" /> </Section> where * Aos is the name appearing on the VNC window * password is.... guess.... * 5901 is the TCP port * 0 0 is the base of the VNC window in the virtual display space of Aos * 1024 768 is the size of the VNC window usually an Autostart section is already present in you AosConfig.xml Also ensure that Autostart.Run is called at boot-time by adding BootX="Autostart.Run" to your system's configuration strings, where X is the smallest 1-digit number still not already used. After the nice part, the troublesome part. When I installed it, I used the Aos VNC Viewer from another machine to check that the server did start. It worked, but the refresh did not work well, and made it unpractical for use. I installed the latest VNC for Windows (3.3.7) on two other computers on the same LAN: * on the laptop (700 MHz), the connection was closed by the server even before asking for the password. This happened also with the 3.3.3 version. * on the desktop (233 MHz) it worked for a while, then froze (in fact, the Aos server did disappear from the net, had to reboot the machine because without screen nor trace I had no clue what was wrong). According to two local gurus, my laptop is sending the requests to the VNC server too fast, same to a lesser degree for the desktop. The only solution to this is to use a slower machine or to trottle the network: I first configured my laptop for 10Mbit without duplex. The situation improved, but I still had a frozen system after a while. Then I did the same with the Aos machine: I booted pressing the left shit key to get into configuration's manager, added 3C90xMedia="1" (Base-10T mode) 3C90xDuplex="1" (Simplex mode) with "W" I wrote the configuration back to the boot partition (in this case a floppy), then with "c" booted Aos. Now I can work with Aos through VNC without problems with vnc 3.3.7 (vnc 3.3.3 still doesn't work) -Patrik -------- Patrik Reali http://www.inf.ethz.ch/personal/reali http://www.oberon.ethz.ch/jaos

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Oberon performance (long)
by rotaru＠centrum.cz 21 Apr '03

21 Apr '03

To everyone who is curious... J. Templ has already mentioned in his ``Ofront User Guide'' (1995): The translation of Oberon programs to C makes thousands of person years invested into aggressively optimizing C compilers available to the Oberon community. Oberon compilers that optimize equaly well can only be expected when Oberon is as wide-spread as C. (I have tried to use it on my Debian distro, but it requieres xlibs.3.3 or so, a very obsolete library) And those who are even more curious may look at the example below. MODULE Simple; TYPE Simple = OBJECT VAR x, y, z : LONGINT; PROCEDURE &Init; BEGIN x := 1; y := 10; z := 100; END Init; PROCEDURE Sum* (): LONGINT; BEGIN RETURN (x + y + z) END Sum; PROCEDURE Set (n: LONGINT); BEGIN x := n; y := 10 * n; z := 100 * n; END Set; END Simple; END Simple. And here folows part of [Decoder.Decode Simple.Obx ~] output, where I have marked (and kind of commented) those instructions which an agressively optimizing compiler would have been "optimized away", or changed with better ones. PROCEDURE Simple.Init 0007H: 55 PUSH EBP 0008H: 8B EC MOV EBP,ESP 000AH: 8B 5D 08 MOV EBX,8[EBP] 000DH: C7 03 01 00 00 00 MOV 0[EBX],1 0013H: 8B 5D 08 MOV EBX,8[EBP] ;? address already loaded 0016H: C7 43 04 0A 00 00 00 MOV 4[EBX],10 001DH: 8B 5D 08 MOV EBX,8[EBP] 0020H: C7 43 08 64 00 00 00 MOV 8[EBX],100 ;? address already loaded 0027H: 8B E5 MOV ESP,EBP 0029H: 5D POP EBP 002AH: C2 04 00 RET 4 PROCEDURE Simple.Sum 002DH: 55 PUSH EBP 002EH: 8B EC MOV EBP,ESP 0030H: 8B 5D 08 MOV EBX,8[EBP] 0033H: 8B 55 08 MOV EDX,8[EBP] ;? addres already in EBX 0036H: 8B 03 MOV EAX,0[EBX] 0038H: 03 42 04 ADD EAX,4[EDX] ;? ADD EAX, 4[EBX] 003BH: 8B 5D 08 MOV EBX,8[EBP] ;? address already loaded 003EH: 03 43 08 ADD EAX,8[EBX] 0041H: 8B E5 MOV ESP,EBP 0043H: 5D POP EBP 0044H: C2 04 00 RET 4 0047H: 6A 03 PUSH 3 0049H: CC INT 3 PROCEDURE Simple.Set 004AH: 55 PUSH EBP 004BH: 8B EC MOV EBP,ESP 004DH: 8B 5D 08 MOV EBX,8[EBP] 0050H: 8B 55 0C MOV EDX,12[EBP] ; loading n; 0053H: 89 13 MOV 0[EBX],EDX 0055H: B8 0A 00 00 00 MOV EAX,10 005AH: F7 6D 0C IMUL 12[EBP] ; IMUl EDX (foster) 005DH: 8B 5D 08 MOV EBX,8[EBP] ; addres already in EBX 0060H: 89 43 04 MOV 4[EBX],EAX 0063H: B8 64 00 00 00 MOV EAX,100 0068H: F7 6D 0C IMUL 12[EBP] ; IMUl EDX (foster) 006BH: 8B 5D 08 MOV EBX,8[EBP] ; addres already in EBX 006EH: 89 43 08 MOV 8[EBX],EAX 0071H: 8B E5 MOV ESP,EBP 0073H: 5D POP EBP 0074H: C2 08 00 RET 8 I have no idea, how hard will it be to change this.I did take a look at the code in PC*.Mod (for an hour or so) and I have run into these lines ... ELSIF x.mode = Reg THEN (* O.K. already loaded *) ... ELSIF x.mode = Ref THEN <dereference the pointer> May be a new "ELSIF (x.mode = Ref) & (x.base.mode = Reg) THEN" should be added? (Just thinking aloud/astray) I'm tempted to give it a try, but how many lines will I have to change? What is your estimate, Patrick? V. Rotaru -- P. S. And one more question? To change my e-mail address I should register off and on again? VR. ---------------------------------- E-mail akcelerátor, spam filtr, bezpečnostní agent. Rychle a bezpečně s Centrum.cz E-mail! http://home.centrum.cz/reklama/email/email_vyhody.html

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