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by fladda
Mon Jan 20, 2020 10:50 pm
Forum: Off topic discussion
Topic: History of Linux on ARM?
Replies: 20
Views: 745

Re: History of Linux on ARM?

From https://www.linux.com/news/linux-kernel-hacker-interview-russell-king/ ...Russell King, who originally ported Linux to ARM and continues to oversee ARM Linux development. Russell King: “I started hacking on Linux for my Acorn A5000 machine back in Spring 1994 while still at Southampton Universi...
by fladda
Mon Jan 20, 2020 10:40 pm
Forum: Off topic discussion
Topic: History of Linux on ARM?
Replies: 20
Views: 745

Re: History of Linux on ARM?

I can't believe that nobody has mentioned Russell King. From http://armlinux.simtec.co.uk/whoswho.html Russell King Russell is "the" ARM Linux guy, he did the initial port to Acorn A5000 many years ago and has continued to provide a huge level of input ever since. His advice should be heeded as he p...
by fladda
Tue Nov 05, 2019 8:07 pm
Forum: General discussion
Topic: Raspberry Pi 4 as a primary desktop computer?
Replies: 53
Views: 6852

Re: Raspberry Pi 4 as a primary desktop computer?

Well, after more than two weeks or regular use, I am still using my 2Gbyte RPi4 as my primary desktop computer. I am still very impressed with the overall performance and usability of the PRi4 for general internet-based tasks. I've got a 4Gbyte RPi4 sitting in my RPi drawer, but I've not needed to p...
by fladda
Sat Oct 26, 2019 8:35 pm
Forum: General discussion
Topic: Raspberry Pi 4 as a primary desktop computer?
Replies: 53
Views: 6852

Re: Raspberry Pi 4 as a primary desktop computer?

I have now been using my RPi4 for a week as a desktop PC replacement, and everything seems to be tickety-boo (i.e. no problems). The RPi4 boots up in a fraction of the time that my Win7 desktop PC takes (and that's before the Win7 PC starts doing loads of Windows updates). I've not really missed my ...
by fladda
Sun Oct 20, 2019 8:13 pm
Forum: General discussion
Topic: Raspberry Pi 4 as a primary desktop computer?
Replies: 53
Views: 6852

Re: Raspberry Pi 4 as a primary desktop computer?

I guess that 90% of general PC users use only a web-browser and an email client on their PCs. And both of these applications come as standard installed software packages on Raspbian on the RPi4. I purchased a couple of 2Gbyte RPi4s on their release day but they've just sat in their boxes until this ...
by fladda
Mon Sep 04, 2017 10:44 am
Forum: General discussion
Topic: Establishing connection with PLC.
Replies: 2
Views: 451

Re: Establishing connection with PLC.

Recommend using Python as the programming language, Modbus RTU (serial) and RS-485.
by fladda
Thu Sep 01, 2016 8:13 am
Forum: General discussion
Topic: Teamviewer on Pi 3
Replies: 8
Views: 30152

Re: Teamviewer on Pi 3

I just installed the TeamViewer beta on my RPi 2, using the latest version of Jessie downloaded from this site. Seems to be working OK from a TeamViewer client on my PC. I followed the instructions in the post above from ahmedawad. I also just downloaded TeamViewer version 11 onto my PC, as my previ...
by fladda
Mon Aug 15, 2016 8:18 pm
Forum: Off topic discussion
Topic: Dual OS Mind workout.
Replies: 12
Views: 3006

Re: Dual OS Mind workout.

Back in Windows 1.0 days Acorn built their first Acorn Risc Machine processors. Aurthur, the forerunner of RISCOS was developed as ARM's first operating system (ignoring Unix). 30 years later ARM are ubiquitous worldwide, and RISCOS still runs on ARM processors. We've now got a lot better choice of ...
by fladda
Sun Aug 30, 2015 11:50 am
Forum: RISCOS
Topic: RISC OS Software Development
Replies: 17
Views: 7029

Re: RISC OS Software Development

I have to agree with the moderator(s) here. This RISC OS forum is the best place to include all matters relating to RISC OS on the Rasbessy Pi, which included BBC BASIC and WIMP topics. If the RISC OS RPi forum ever gets overloaded with hundreds of posts per day, then perhaps we should consider spli...
by fladda
Tue Jul 28, 2015 8:45 am
Forum: RISCOS
Topic: Raspberry Pi Model A+ hang-up using RISCOS
Replies: 12
Views: 3194

Re: Raspberry Pi Model A+ hang-up using RISCOS

See other threads on this very forum, e.g.: USB devices not working on Model A+ https://www.raspberrypi.org/forums/viewtopic.php?f=28&t=96391 This does not look like a RISC OS issue. Issue appears to be due to the difference in the hardware between the RPi B(+) and the A+, and lots of different issu...
by fladda
Mon Feb 16, 2015 7:01 pm
Forum: RISCOS
Topic: RISC OS Assembly Tutorials.
Replies: 82
Views: 29168

Re: RISC OS Assembly Tutorials.

Ditto. Welcome back David.

I suspect that many more people read this RISC OS forum than actaully post here. Indeed many of the RPi folk cut their milk teeth on the BBC and Arch computers, and probably keep their eye on any promising RISC OS developments...

Ralph
by fladda
Mon Sep 01, 2014 10:15 am
Forum: RISCOS
Topic: memory on riscos
Replies: 3
Views: 2134

Re: memory on riscos

Assuming that you are in the RISC OS desktop. Point your mouse onto the Raspberry symbol at the bottom right corner of the screen. "Left-click" using the mouse. This should open up the RISC OS task window which shows how the ARM's RAM is currently being used within RISC OS. The "Total" at the bottom...
by fladda
Tue Mar 25, 2014 1:38 pm
Forum: Bare metal, Assembly language
Topic: Bare Metal with OS
Replies: 9
Views: 4519

Re: Bare Metal with OS

Here's a simple RISC OS BASIC programme that gets you into the (BASIC) ARM assembler and switches to ARM supervisor mode. Not actually done any serious ARM assembler work for several years btw, so YMMV. DIM code% 256 : REM reserves a block of RAM to store the assembled ARM code P%=code% : REM progra...
by fladda
Mon Mar 24, 2014 8:42 am
Forum: Bare metal, Assembly language
Topic: Bare Metal with OS
Replies: 9
Views: 4519

Re: Bare Metal with OS

Have you considered RISC OS ? This is one of the 'supported' operating systems for the RPi and can be loaded from the NOOBS SD card (although the version of RISC OS for the RPi on the current NOOBS is severely out of date). RISC OS allows the user to take virtually full control of the ARM very easil...
by fladda
Tue Mar 11, 2014 5:08 pm
Forum: RISCOS
Topic: BBC BASIC sound programming / interfacing with SN76489?
Replies: 7
Views: 6336

Re: BBC BASIC sound programming / interfacing with SN76489?

Just downloaded the BeebIt emulator, and there is indeed a RISC OS 32-bit relocatable module called "ZBeep" version 1.3.1 written by John K. This does appear to be the BBC sound emulation package.

There are three SWIs (software calls) that could be called from BASIC on the RPi under RISC OS.

Ralph
by fladda
Tue Mar 11, 2014 2:00 pm
Forum: RISCOS
Topic: BBC BASIC sound programming / interfacing with SN76489?
Replies: 7
Views: 6336

Re: BBC BASIC sound programming / interfacing with SN76489?

I just downloaded ZeriBeeb from John K's website. However, the version of !SparkFS on my RC12? RPi (1.43 dated 16-Sep-12) does not appear to be able to unpack this file. I tried various things including setting the file type to &6E8 (i.e. a PackDir file). The good news is that ZeriBeeb is shown as a...
by fladda
Tue Feb 18, 2014 2:09 pm
Forum: RISCOS
Topic: GPIO Read with BASIC
Replies: 4
Views: 3604

Re: GPIO Read with BASIC

This small programme gives an excellent example of just how easily and quickly you can get down to almost 'bare metal' programming on the RPi, using RISC OS with its built-in BBC BASIC :-)

Ralph
by fladda
Sun Feb 16, 2014 8:58 pm
Forum: RISCOS
Topic: GPIO Read with BASIC
Replies: 4
Views: 3604

Re: GPIO Read with BASIC

I just copied this programme across to the ARMBE (!Edit) Basic Editor on the RC11 RPi. Seems to do something - well it prints a 32-bit number as expected. No I/O connected on my RPi so I've no easy way of knowing if the values are correct. However, just for those not familiar with BBC Basic. The lin...
by fladda
Mon Dec 09, 2013 8:48 am
Forum: RISCOS
Topic: Book - Raspberry Pi RISC OS System Programming Revealed
Replies: 36
Views: 20751

Re: Book - Raspberry Pi RISC OS System Programming Revealed

I've only just received my copy of the book, so I'm not going to comment upon the whole book in detail until I've at least read everything. However, in defense of the author, Bruce does state early on (p16) that he can only just touch the surface in this book as there is so much detail that could be...
by fladda
Tue Feb 05, 2013 1:46 pm
Forum: RISCOS
Topic: RISC OS; Pros and Cons
Replies: 145
Views: 31638

Re: RISC OS; Pros and Cons

Guess who spent an hour this morning working through a very large BBC Basic programme modifying all the "NEXT" statements to add the variable names used in the "FOR" loops :-(

Oh well, at least its easy to get back to where I started this morning...

Ralph
by fladda
Fri Jan 11, 2013 9:26 am
Forum: RISCOS
Topic: Using RISC OS as an everyday desktop
Replies: 17
Views: 7468

Re: Using RISC OS as an everyday desktop

<So in short, what you're saying is that I have to be a programmer?> Remember that the main goal of the Rapberry Pi Foundation is to encourage young people to get back to hardware and software basics and get involved in programming and developing hardware stuff. Most computer users these days have j...
by fladda
Tue Jan 08, 2013 2:23 pm
Forum: RISCOS
Topic: RISC OS SOUND
Replies: 14
Views: 4287

Re: RISC OS SOUND

The 32-bit version of the old Basic Editor still works fine on the RPi. From memory this started life as *BE on the BBC micro. The RiscOS 'veneer' application is called !BEdit. The module that does all the work is called ArmBE. I still use ArmBE on a daily basis, as I know by heart most of the keybo...
by fladda
Fri Jan 04, 2013 11:21 pm
Forum: RISCOS
Topic: What does RISCOS bring to the RPi party
Replies: 63
Views: 19074

Re: What does RISCOS bring to the RPi party

One advantage of RiscOS compared to many of the larger ('bloatware') operating systems is that RiscOS usually gives priority to whatever the 'user' wants to do, rather than to whatever the operating system happens to be doing. RiscOS performs very few operating system dependent background 'tasks'. S...

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