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by Heater
Wed Nov 14, 2018 10:15 pm
Forum: Off topic discussion
Topic: Operating Systems:
Replies: 3
Views: 49

Re: Operating Systems:

You are not alone in wanting a smaller simpler operating system. One significant driving force behind that desire is security and reliability. To that end it might be a good idea to start from the ground up and write the OS in a safer language than C. As such you may be interested in the Redox opera...
by Heater
Wed Nov 14, 2018 9:46 pm
Forum: General programming discussion
Topic: What OS and language to use for database project??
Replies: 12
Views: 168

Re: What OS and language to use for database project??

C does not have properly typed variables. C has lot's of undefined behaviors and traps for beginners.

Just write a Python and a C program to add two numbers together to see why Python is far simpler and more suitable as an introduction to programming that C.
by Heater
Wed Nov 14, 2018 9:42 pm
Forum: General programming discussion
Topic: What OS and language to use for database project??
Replies: 12
Views: 168

Re: What OS and language to use for database project??

Our opening poster, horizon2000, is not yet a programmer. A beginner to programming need a language that is quick an simple to get started with and all the hand holding they can get. Python is such a language. Writing your first one line "Hello world" program is about as simple as it can get. From t...
by Heater
Wed Nov 14, 2018 7:51 pm
Forum: General programming discussion
Topic: What OS and language to use for database project??
Replies: 12
Views: 168

Re: What OS and language to use for database project??

horizon2000, I am not a programmer and I need some advise, You have an interesting and fun road ahead. Be warned that it is a long and winding road. What operating system should I use? Use Raspbian. It's the standard for the Pi. You will get the best support with any questions that come with Raspbia...
by Heater
Wed Nov 14, 2018 7:44 pm
Forum: General discussion
Topic: Does the PI Zero run Centos or Debian?
Replies: 11
Views: 301

Re: Does the PI Zero run Centos or Debian?

I'm sure many can't tell when I'm being humorous or not. Glad you got the joke.
by Heater
Wed Nov 14, 2018 6:47 pm
Forum: Graphics programming
Topic: Divide By Depth??
Replies: 40
Views: 672

Re: Divide By Depth??

jamesh, Numbered, in decades...Going to be that long before RISC-V catches up, if at all. I am under no illusion that Intel and ARM machines won't be dominant for a long time in server/desktop and mobile spaces respectively. There is too much other infrastructure around them, hardware and software, ...
by Heater
Wed Nov 14, 2018 6:36 pm
Forum: Graphics programming
Topic: Divide By Depth??
Replies: 40
Views: 672

Re: Divide By Depth??

DavidS, I beg to differ on the no point issue....There is a lot of ARM code out there, that is still very useful. As much as I lusted after a Archie when they were current I never got to own one and as such I know very little of the RISC OS world. So my question is: What ARM RISC OS code is unique? ...
by Heater
Wed Nov 14, 2018 2:07 pm
Forum: Off topic discussion
Topic: connected a banana pi with all the necessary wires
Replies: 3
Views: 100

Re: connected a banana pi with all the necessary wires

As an owner of a Banana Pi, not a Raspberry Pi, I suggest you contact the Banana Pi manufacturers or their forum or whatever other support channels they have.

That should be be more likely to get you help with your problem than this forum for the Raspberry Pi.

Good luck.
by Heater
Wed Nov 14, 2018 1:55 pm
Forum: General discussion
Topic: Security
Replies: 8
Views: 278

Re: Security

In order to stop the person with your SD card from being able to read it you will need to encrypt the file system or at least the code and data you want to keep secret. In order for the encrypted code on that SD card to be runnable when the Pi boots up the Pi will need to know the decryption key. Bu...
by Heater
Wed Nov 14, 2018 1:49 pm
Forum: General discussion
Topic: how to set date and time to Raspberrypi Module
Replies: 5
Views: 90

Re: how to set date and time to Raspberrypi Module

And your error is what?

Please use code tags when presenting code so that the formatting comes out nicely. There is a button in the post edit dialog box to do that for you.

It is normal normal for a program to return 0 on success. Otherwise an error code.
by Heater
Wed Nov 14, 2018 11:49 am
Forum: General discussion
Topic: how to set date and time to Raspberrypi Module
Replies: 5
Views: 90

Re: how to set date and time to Raspberrypi Module

Please don't send us on a wild goose chase. There is no C code on the page you linked to. There is no indication of what you did or what the error was. So we have no idea what you actually did.

We cannot help you if you cannot help us.

Please answer the questions asked above.
by Heater
Wed Nov 14, 2018 11:09 am
Forum: General discussion
Topic: Does the PI Zero run Centos or Debian?
Replies: 11
Views: 301

Re: Does the 0 run Centos or Debian?

Yes. They were the guys that made the 2900 series of bit slice processor chips and then the 29000 RISC processors. Sadly they gave up all the good RISC stuff and started copying some other fly by night companies instruction set. Luckily they eventually invented their own 64 bit instruction set and m...
by Heater
Wed Nov 14, 2018 2:19 am
Forum: Other programming languages
Topic: javascript not working on RPi 3
Replies: 11
Views: 285

Re: javascript not working on RPi 3

lrhorer, I would disagree, but then I am not the Apache developer. Certainly if a CGI script requests a non-existent resource, Apache logs an error. Not knowing any better, I would expect Apache to do the same if an HTML script requests a non-existent resource. There is a good reason for this behavi...
by Heater
Wed Nov 14, 2018 2:02 am
Forum: Graphics programming
Topic: Divide By Depth??
Replies: 40
Views: 672

Re: Divide By Depth??

DavidS, I'm aware that a processor implemented in FPGA is not going to attain the speed of silicon built to do the job. When I said "souped up" I was referring to your description of these new ARM cores as "amazing" and "runs circles" around. Perhaps I should have put quotes around it. I know that p...
by Heater
Tue Nov 13, 2018 8:34 pm
Forum: General discussion
Topic: Does the PI Zero run Centos or Debian?
Replies: 11
Views: 301

Re: Does the 0 run Centos or Debian?

dac2040, There are a couple of things you need to understand: 1) Debian is an operating system built on Linux. A so called "Linux Distribution". There are many others, like Centos or Ubuntu etc. 2) Debian is available to run on many processor architectures. Intel x86 of course, also ARM and others l...
by Heater
Tue Nov 13, 2018 7:59 pm
Forum: General discussion
Topic: Does the PI Zero run Centos or Debian?
Replies: 11
Views: 301

Re: Does the 0 run Centos or Debian?

If you have the source and can compile it then it should be usable on Raspbian on the Pi.
by Heater
Tue Nov 13, 2018 7:57 pm
Forum: General discussion
Topic: Q. Is a Raspberry Pi a good computer for internet banking / shopping?
Replies: 27
Views: 662

Re: Q. Is a Raspberry Pi a good computer for internet banking / shopping?

ejolson, While a read-only root filesystem as implemented following this thread and many others prevents accidental filesystem corruption due to loss of power, it would not prevent intentional modifications. The SD card can still be written to and the filesystem could even be remounted with write ac...
by Heater
Tue Nov 13, 2018 4:16 pm
Forum: General discussion
Topic: Q. Is a Raspberry Pi a good computer for internet banking / shopping?
Replies: 27
Views: 662

Re: Q. Is a Raspberry Pi a good computer for internet banking / shopping?

Not a bad plan. Not really effective unless you have a read-only file system that cannot be corrupted permanently whilst you are on line. Still leaves you open to exploits that can occur whilst you are on line. Of course this make it harder to keep your software up to date such that you have the lat...
by Heater
Tue Nov 13, 2018 1:51 pm
Forum: Other programming languages
Topic: javascript not working on RPi 3
Replies: 11
Views: 285

Re: javascript not working on RPi 3

lrhorer, OK, I fixed it. Depending on exactly how I specified the URLs, Apache either thought the JS files were scripts executable on the server, rather than the browser, or else they were in a location Apache refused to read. I moved everything not CGI related to /var/www/html/lib, and now it works...
by Heater
Tue Nov 13, 2018 11:12 am
Forum: Graphics programming
Topic: Divide By Depth??
Replies: 40
Views: 672

Re: Divide By Depth??

DavidS, ...there are new ARMv3 and ARMv4 CPU's coming out, so far only for FPGA, though it will likely not be long before we see a new generation of ARMv4 SoC's, that may be able to keep up with the ARMv8 in 32 bit mode (some of the superscalar stuff people are doing in reimplementing the older ARM ...
by Heater
Mon Nov 12, 2018 11:37 pm
Forum: Graphics programming
Topic: Divide By Depth??
Replies: 40
Views: 672

Re: Divide By Depth??

DavidS, I don't understand. Could you explain what you mean by "restrictive" or "non-restrictive" instruction set. What restrictions are we talking about? When it comes to Intellectual Property rights all ARM instruction sets are restricted. You need a license from ARM to implement them. From a prac...
by Heater
Mon Nov 12, 2018 11:10 pm
Forum: General discussion
Topic: Q. Is a Raspberry Pi a good computer for internet banking / shopping?
Replies: 27
Views: 662

Re: Q. Is a Raspberry Pi a good computer for internet banking / shopping?

k-pi, ...what I advise, & do myself, is that after making a transaction, you switch off completely to let the ram clear, about 10 seconds - then reboot if you want to continue using the computer. If it makes you feel safe and secure then please do continue. However I feel it is very bad advice. Offe...
by Heater
Mon Nov 12, 2018 5:39 pm
Forum: Graphics programming
Topic: Divide By Depth??
Replies: 40
Views: 672

Re: Divide By Depth??

So given that there are no users of the restricted ARM instruction set that you are targeting why are you making life difficult for yourself by targeting it?
by Heater
Mon Nov 12, 2018 5:34 pm
Forum: General discussion
Topic: Programming Software for Raspberry PI
Replies: 11
Views: 278

Re: Programming Software for Raspberry PI

If you install the Raspbian operating system (not the lite version) or pretty much any other Linux based OS it will have compilers for C and C++ and Python run times already installed ready to use.

Anything that is missing can be added in seconds with the package manager.
by Heater
Mon Nov 12, 2018 3:17 pm
Forum: General discussion
Topic: What really is raspberry pi?
Replies: 6
Views: 297

Re: What really is raspberry pi?

tonyshaw, Welcome to the forum. You sound like the kind of guy that could have a lot of fun with the Pi and learn a lot along the way. Why the Pi is a computer. A full up, Linux running, computer. With networking, USB, WiFi, Bluetooth, 3D graphics acceleration, etc. Despite it's negligible size, cos...

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