September 2020 - Oberon - mailman3.inf.ethz.ch

Re: [Oberon] Emulators
by Jörg 14 Feb '22

14 Feb '22

Wojtek > How can I proceed, in practical terms, to use your JS emulator for development? Perhaps we should start discussing, WHAT you want to change. At the moment I see three different levels of HW modifications: easy, more difficult, impossible. Basically, see an emulator as virtualization. In virtualization you have a host machine (where the emulator runs on) and a guest machine (this is the FPGA board). I ignore „containers“ at the moment Easy: if you want to extend the RISC-5 instruction set in Verilog (eg add an autoincrement instruction) the modification of the emulator is rather straight forward. I neglect the fact that you have to modify the Oberon-07 compiler to use this new instruction, because this is not important for the emulator. More difficult: if you want to add IO mapped HW (eg Ethernet or Wifi) or memory mapped HW (eg color display) to your FPGA and the host machine has an equivalent of this HW, with a little bit of effort the emulator can be modified to map the IO register commands or new memory layout to the corresponding host HW. Impossible: if you want to add HW to your FPGA and the host machine does not have an equivalent HW (eg a neutrino sensor) then it‘s impossible for the emulator to mimic the new FPGA HW. br Jörg

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Wanted: Oberon Syntax in TextMate, Sublime Text or Atom Grammar
by Treutwein Bernhard 01 Jan '22

01 Jan '22

Does somebody have grammars for Oberon / Oberon-2 / Component Pascal / Active Oberon as grammar for TextMate / Sublime Text / Atom Background: Github wrongly classifies Oberon / Oberon-2 / Component Pascal / Active Oberon as Modula-2. I opened quite some tiome ago an issue in the github/linguist project (https://github.com/github/linguist/issues/3888) and they don't accept EBNF grammars. -- Bernhard Treutwein

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A technote for automatically running batch job on system startup
by Charles Perkins 23 Dec '20

23 Dec '20

Hello everybody, I wrote a note on how to have Oberon automatically run a startup script. I introduced two small changes to TextFrames.Mod (five lines total) introducing a 'Call Message' and then handling that message with a call to the Call procedure, and three small changes to System.Mod (eight lines total) introducing two variables, opening a viewer with a predetermined text file, and then sending the call message to the viewer at the end of system initialization. https://github.com/io-core/technotes/blob/main/technote013.md I used Michael Schierl's Batch.Mod for the actual batching of commands but Andreas Pirklbauer's system would have worked just as well, or any other batching or script system. The above changes merely call the first command in a text file, the rest of what happens is up to that command. I did this to make building and testing my own system more automatic but I thought I'd share in case anyone found it interesting or useful Best Regards, Chuck

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Re (2): Names and genealogies.
by peter＠easthope.ca 21 Oct '20

21 Oct '20

From: Joerg <joerg.straube(a)iaeth.ch> Date: Mon, 22 Jun 2020 22:48:04 +0300 > So just forget S3, System3 and other names you might have come along OK, thanks Joerg. in the front page, https://en.wikibooks.org/wiki/Oberon , I've made the changes "S3" => "ETH Oberon". The former page https://en.wikibooks.org/wiki/Oberon/S3 is now https://en.wikibooks.org/wiki/Oberon/ETH_Oberon . Sub-pages also renamed accordingly. The change is also done in https://en.wikibooks.org/wiki/Oberon/sitemap . Several red links remain there until I can salvage the pages. Meanwhile, most can be reached via the WayBack link in the green box. I have not proof read yet and am unlikely to have much time before winter weather returns. Will try to correct any erros reported. Regards, ... P. -- https://en.wikibooks.org/wiki/Medical_Machines https://en.wikibooks.org/wiki/Oberon Tel: +1 604 670 0140 Bcc: peter at easthope. ca

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An attempt at an Oberon family tree
by Liam Proven 10 Oct '20

10 Oct '20

I've been trying to sketch this, initially for my own understanding but with a hope of using it in Wikipedia and elsewhere. Comments, suggestions, improvements, etc are actively solicited! With any luck, this will allow anyone to view it: https://app.lucidchart.com/invitations/accept/254a71b1-405b-41c6-ace9-f0db0… -- Liam Proven – Profile: https://about.me/liamproven Email: lproven(a)cix.co.uk – gMail/gTalk/gHangouts: lproven(a)gmail.com Twitter/Facebook/LinkedIn/Flickr: lproven – Skype: liamproven UK: +44 7939-087884 – ČR (+ WhatsApp/Telegram/Signal): +420 702 829 053

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Re (2): An attempt at an Oberon family tree
by peter＠easthope.ca 30 Sep '20

30 Sep '20

Hans, From: Hans Klaver <hklaver(a)dds.nl> Date: Tue, 29 Sep 2020 01:22:59 +0200 > https://web.archive.org/web/20191207132227/http://www.ethoberon.ethz.ch/gen… I might have seen that years ago but don't recall the appearance. How close is archive.org to the display as it was from ETHZ? "The dates are approximative." but archive.org shows no dates. Thanks, ... L. -- https://en.wikibooks.org/wiki/Medical_Machines https://en.wikibooks.org/wiki/Oberon Tel: +1 604 670 0140 Bcc: peter at easthope. ca

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Re: [Oberon] Flash wear levelling
by peter＠easthope.ca 30 Sep '20

30 Sep '20

From: Paul Reed <paulreed(a)paddedcell.com> Date: Fri, 25 Sep 2020 09:13:58 +0100 > I suppose you could have cheap+endurance by using a PDIP package for > the SPI flash and socket it, replacing it when it wears out, but then > you have the price of the socket, the through-holes and the larger > footprint (which really look almost comically huge these days on a > modern surface-mount-technology design), the decreasing availability > of such packages, etc. A 44 pin connector on the board with a CF card is another klunky possibility. Smaller than a large pencil eraser. =8~) "Old fashioned" but inexpensive and reliable, and the ATA driver is well established in ETH Oberon already. The USB connector on the RiskZero offers too many possibilities there. > For the System Construction class last year, we used on-board SPI > flash ... That's a commercial board? Made to order? Do the students solder on it? Do they keep it at the end of the course? Used again next year? Thanks, ... L. -- https://en.wikibooks.org/wiki/Medical_Machines https://en.wikibooks.org/wiki/Oberon Tel: +1 604 670 0140 Bcc: peter at easthope. ca

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Re: [Oberon] Re (2): An attempt at an Oberon family tree
by peter＠easthope.ca 29 Sep '20

29 Sep '20

> It's an exact copy, I would say. Good. > The links to the language reports have "years". OK, thanks. I haven't tackled the list of books yet. ... L. -- https://en.wikibooks.org/wiki/Medical_Machines https://en.wikibooks.org/wiki/Oberon Tel: +1 604 670 0140 Bcc: peter at easthope. ca

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[Off topic] MPW-Pascal
by Tomas Kral 29 Sep '20

29 Sep '20

Hi, Just discovered classic old Macintosh platform can be emulated. (BasiliskII, mini vMac). Installed MPW and MPW-Pascal. There are some common ideas with Oberon systems, perhaps worth mentioning here. MPW Apple's development environment, supporting flavour of languages, Pascal, C, C++, Fortran, .., there is also Oberon variant for it. Perhaps worth exploring further. A piece of selected texts [commands] can be executed in MPW shell. MPW-Pascal has object extension, allowing for single inheritance. SET type can be defined on integer range 0..2039 [max], e.g. VAR bits: SET OF 0..1024 In Oberon notation that would be {0..1024}! Wow, that seems a lot. My explanation is the `QuickDraw', which is underlying graphics manager, with rich functionality, can handle not only monocolour, but also 256,1024,1024*1024 colours. Such big sets are perhaps well justified for screen bits manipulation. Must really be complex, part of each Mac ROM, typically 1MB in size, all written Pascal some portions in assembly. Cannot tell how big QuickDraw really is. Out of curiosity, reading some old docs, and programmes. Pascal still reads better to C, not only in tutorial texts, in my opinion. Interesting is also Mac runtime memory design. Applications are segmented in code and resources. Loaded / unloded on demand. There is no module concept analogy, closest idea is that resources and code can be shared. -- Tomas Kral <thomas.kral(a)email.cz>

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Re: [Oberon] An attempt at an Oberon family tree
by peter＠easthope.ca 27 Sep '20

27 Sep '20

From: Liam Proven <lproven(a)gmail.com> Date: Sun, 27 Sep 2020 21:05:09 +0200 > I've been trying to sketch this, initially for my own understanding ... Analogous to this and simpler? https://commons.wikimedia.org/wiki/File:Linux_Distribution_Timeline.svg I opened the link but declined to register an account to see the diagram. Might register later. > ... but with a hope of using it in Wikipedia and elsewhere. Good! commons.wikimedia.org is the right place to submit the result. Then it can be invoked in any Wikimedia project. Regards, ... L. -- https://en.wikibooks.org/wiki/Medical_Machines https://en.wikibooks.org/wiki/Oberon Tel: +1 604 670 0140 Bcc: peter at easthope. ca

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