[Oberon] Hennessy.Mod 64kB limit

[Frans-Pieter Vonck]

Here an example of setting registers by set operations in Oberon07
https://youtu.be/zlnj6FCY1tY?t=374
(Ivan Denisov Oberon07 compiler in BlackBox)
Greets,
F.P.

Frans-Pieter Vonck schreef op 2020-02-18 19:34:
> A few days ago I posted a comment on an item on Andreas Spiess youtube
> channel, "What we should NOT do in 2020"
> Spiess is an 'influencer' for programming ESP32 chips in arduino, "The
> guy with the Swiss accent".
> https://youtu.be/zFVM9xZR8KI
> 
> 
> Me.
> Quote from Edsger Dijkstra:
> 
> " [..]before really embarking on a sizable project, in particular
> before starting the large investment of coding, try to kill the
> project first, and
> (ii) start with the most difficult, most risky parts first."
> https://www.cs.utexas.edu/users/EWD/transcriptions/EWD13xx/EWD1308.html
> 
> Andreas Spiess
> 2 dagen geleden
> Killing the projet means say "no" ;-)  To start with the most
> difficult part is no more in fashion these days with "agile" and "low
> hanging fruits". But I tend to agree with Dijkstra.
> 1
> Oberoid Droidus
> 2 dagen geleden (bewerkt)
> @Andreas Spiess Unfortunately trial and error tinkering with IOT is
> impossible while following Dijkstra's adagia. I feel more comfortable
> with the ideas of Niklaus Wirth, a electronic engineer, not a
> mathematician. He has developped an elegant language called Oberon07.
> Oberon7  has an interesting approach to setting bits by using SET
> operations. There is a commercial implementation of Oberon07
> https://www.astrobe.com/  .  At ETHZ the development of Oberon for
> micro-controllers is undertaken by Paul Reed.
> Andreas Spiess
> 2 dagen geleden
> Nicklaus Wirth was one of my professors at ETH ;-)
> 1
> Oberoid Droidus
> 2 dagen geleden
> @Andreas Spiess The best! Hope there will be an Oberon Day at ETHZ
> soon. A reason to visit Zwitserland and to check on my VM that is
> hosted somewhere in the Alps. https://datacenterlight.ch/
> 
> 
> I had this document in mind when I wrote the comment.
> SET: A neglected data type, and its compilation for the ARM
> https://people.inf.ethz.ch/wirth/Oberon/SETs.pdf
> 
> I think that bitwise manipulations by set operations is elegant.
> 
> Greets,
> F.P. Vonck
> 
> 
> Pablo Cayuela schreef op 2020-02-18 19:09:
>> I'm on your side Wojtek, as a professor and a former student, I'm
>> always praising Wirth's School but struggle with code, despite being
>> Oberon, LoLa or Verilog in ETHZ repositories and followers.
>> Too many parts of the codes are full of idioms known to an already
>> involved developer of the tools, but hard for outsiders and newbies.
>> I hope for they will follow the preached way.
>> 
>> Prof. Pablo Cayuela
>> 
>> On Tue, Feb 18, 2020 at 1:26 PM Skulski, Wojciech
>> <skulski at pas.rochester.edu> wrote:
>> 
>>> Joerg:
>>> 
>>> I am not questioning the code. I am questioning the coding
>>> practice: avoiding any comments and writing bit masks explicitly in
>>> hex.
>>> 
>>> I have learned how to clearly code bit masks from Cypress EZ-SB
>>> Frameworks originally written by Anchor Chips. Translated to Oberon
>>> it would look like this:
>>> 
>>> CONST Bit0 = 1; Bit1 = 2; Bit3 = 4; (* and so on, the same can be
>>> written in hex *)
>>> 
>>> mno := inst DIV Bit20 MOD Bit4; (*  inst DIV 100000H MOD 10H; *)
>>> 
>>> So now we at least see which bit is being used without parsing hex
>>> in mind. The intent of DIV and MOD can be explained in a comment.
>>> All your explanations can be written in a comment. As a minimum, a
>>> reference to NW papers could be given, with the paper title and
>>> page.
>>> 
>>> I have written references to NW papers in my SysDef.Mod. I am
>>> asking, why I could do in Rochester what has not been done in
>>> Zurich, where this whole School of NW supposedly originated?
>>> 
>>> I do not want to present public speeches on the merits of NW
>>> programming. I only want to see it done, in order for the code to
>>> become clear rather than confusing.
>>> 
>>> W
>>> 
>>> --
>>> Oberon at lists.inf.ethz.ch mailing list for ETH Oberon and related
>>> systems
>>> https://lists.inf.ethz.ch/mailman/listinfo/oberon
>> --
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