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by jahboater
Thu Dec 01, 2016 9:30 pm
Forum: General programming discussion
Topic: Making readable modifyable code.
Replies: 309
Views: 63878

Re: Making readable modifyable code.

Heater wrote:Strangely enough I have used such punch cards in various places. Never on an actual IBM machine.
Ditto, but I did use an IBM 029 card punch, don't know if that counts.
Heater wrote:That is why I like to call them Hollerith Cards. After the inventor. Pre IBM days.
I remember hollerith constants in Fortran!
by jahboater
Thu Dec 01, 2016 7:35 pm
Forum: Beginners
Topic: Heat Sink material
Replies: 6
Views: 4419

Re: Heat Sink material

Also copper and aluminium are very commonly used. Copper is more expensive and heavier but conducts heat well. Aluminium is much more common and is very cheap. Ceramic has the advantage that it doesn't conduct electricity. I managed to fit a 30x30mm ceramic heatsink to a Pi2V2. The ceramic heat sink...
by jahboater
Thu Dec 01, 2016 5:42 pm
Forum: General programming discussion
Topic: Making readable modifyable code.
Replies: 309
Views: 63878

Re: Making readable modifyable code.

tufty wrote:I think that's spelled "eventual call stack overflow"
:lol:
by jahboater
Thu Dec 01, 2016 3:12 pm
Forum: General programming discussion
Topic: Making readable modifyable code.
Replies: 309
Views: 63878

Re: Making readable modifyable code.

Tail call optimization?
by jahboater
Thu Dec 01, 2016 2:53 pm
Forum: General programming discussion
Topic: Making readable modifyable code.
Replies: 309
Views: 63878

Re: Making readable modifyable code.

I always thought it was "Beginner's All-purpose Simple Instruction Code" but I just looked it up and I think you are right, it is incorrectly named "Symbolic". I have heard it called "Baby's All-purpose Simple Instruction Code" too :? A long time ago I went for a job where prior to the interview the...
by jahboater
Thu Dec 01, 2016 1:13 pm
Forum: General discussion
Topic: Which Power Supply and SD Card for RPi 3?
Replies: 3
Views: 1674

Re: Which Power Supply and SD Card for RPi 3?

Hi, I am going to buying a RPi3 shortly and was wondering what the current advice is as far as what the best power supply and microSD card to get with it. I did read, sometime back, that an 8GB Samsung Evo was the way to go with the card. Is this still the case? All my current Pis have been 1B+ and...
by jahboater
Thu Dec 01, 2016 11:18 am
Forum: Beginners
Topic: Headless setup for disabled user
Replies: 17
Views: 3985

Re: Headless setup for disabled user

A VNC server is included within Raspbian now.
Go into raspi-config to enable it.
by jahboater
Wed Nov 30, 2016 6:35 pm
Forum: Raspberry Pi OS
Topic: New Raspbian release "2016-11-25"
Replies: 132
Views: 33370

Re: New Raspbian release "2016-11-25"

It was just a mistake in communication now that the blog entry is up - that explains it much better than one line in the release notes. Yes the blog is great. Well written and explains the reasoning behind the change. But the first line of the release notes: * SSH disabled by default; can be enable...
by jahboater
Tue Nov 29, 2016 9:19 pm
Forum: Raspberry Pi OS
Topic: New Raspbian release "2016-11-25"
Replies: 132
Views: 33370

Re: New Raspbian release "2016-11-25"

Worked fine for me.
I do most of the configuration before I even put the SD card in the Pi, so its just a case of ">ssh" to create the file after I have fixed config.txt.
by jahboater
Tue Nov 29, 2016 4:36 pm
Forum: Troubleshooting
Topic: Problem with the date
Replies: 11
Views: 1799

Re: Problem with the date

davidcoton wrote:
jahboater wrote:You missed out the actual required date argument - rather crucial when your are setting the date! Add "2016-11-28 21:41:00" to your command line.
Not quite. Add the correct current date and time...
I assumed that was obvious.
by jahboater
Tue Nov 29, 2016 10:46 am
Forum: Beginners
Topic: Gotcha - formatting thumbs
Replies: 11
Views: 1935

Re: Gotcha - formatting thumbs

"sda" is the first usb device, "sda1" is the first partition on that device. "sda2" the second partition and so on. I plug the thumb drive in, then type "dmesg" and you should see what it has been called at the end of the output. When you write a Raspbian image with dd, its to the raw device (sdx) n...
by jahboater
Tue Nov 29, 2016 10:38 am
Forum: Troubleshooting
Topic: Problem with the date
Replies: 11
Views: 1799

Re: Problem with the date

walkpto wrote:This is what I got :
sudo date -s
date: option requires an argument -- 's'
Try 'date --help' for more information.
You missed out the actual required date argument - rather crucial when your are setting the date! Add "2016-11-28 21:41:00" to your command line.
by jahboater
Mon Nov 28, 2016 11:58 pm
Forum: C/C++
Topic: GCC is too surprising...[resolved]
Replies: 7
Views: 1537

Re: GCC is too surprising...

Yes - its an imaginary constant!
by jahboater
Sun Nov 27, 2016 10:05 am
Forum: Advanced users
Topic: How to get working state of self-developed filesystem ?
Replies: 8
Views: 1367

Re: How to get working state of self-developed filesystem ?

Also, oddly, you posted in both "Beginners" and "Advanced users".
by jahboater
Sun Nov 27, 2016 9:46 am
Forum: General discussion
Topic: Using Raspbian as a main operating system
Replies: 32
Views: 6944

Re: Using Raspbian as a main operating system

jardino wrote:The one application I'm stuck on is Microsoft Money, which I use for my household finances. Can anyone recommend a similar program* that runs on Linux?
There is gnucash - I have never used it, others may know of something better.

sudo apt install gnucash

https://www.gnucash.org/
by jahboater
Sat Nov 26, 2016 11:20 pm
Forum: General discussion
Topic: Using Raspbian as a main operating system
Replies: 32
Views: 6944

Re: Using Raspbian as a main operating system

CarlRJ, At least he and I, and every one else, know its nothing to do with the ethernet port. Who, apart from you, cares about the exact spelling or upper case / lower case of its name. Not relevant. I suggest you stay on topic, or at least explain how the spelling of mac is important to the discuss...
by jahboater
Sat Nov 26, 2016 4:21 pm
Forum: General discussion
Topic: Using Raspbian as a main operating system
Replies: 32
Views: 6944

Re: Using Raspbian as a main operating system

Pi's use so little electricity that many people just leave them on 24/7.

I have five permanently on.

Without checking with "systemd-analyze", I'd probably have no idea about the boot time.
by jahboater
Sat Nov 26, 2016 12:40 pm
Forum: General discussion
Topic: Using Raspbian as a main operating system
Replies: 32
Views: 6944

Re: Using Raspbian as a main operating system

Viruses may be rare but that's not good enough. I may seem paranoid, but I remember some particularly difficult ones when I was using the Acorn Archimedes computers back in the dim distant past Hardly comparable. The world has moved on. Most of the servers in the world run Linux, as do most small d...
by jahboater
Sat Nov 26, 2016 11:20 am
Forum: General discussion
Topic: Using Raspbian as a main operating system
Replies: 32
Views: 6944

Re: Using Raspbian as a main operating system

I am also concerned with the lack of anti-virus software. Why do you want it? Freedom from having to purchase and/or constantly update anti-virus and anti-malware software and having it consuming resources on the machine is one very good reason to use Linux instead of Windows. Compared to Windows, ...
by jahboater
Fri Nov 25, 2016 11:48 pm
Forum: Advanced users
Topic: Use 3 heatsinks?
Replies: 8
Views: 5489

Re: Use 3 heatsinks?

Sometimes the heatsinks come in a pack of three, with a little one specially for the I/O chip. In which case you might as well use them, it does no harm. But the main chip to worry about is the SoC as others have said. Yes it would do no harm, so i think i will stick it on as mine too came with a 3...
by jahboater
Fri Nov 25, 2016 8:14 pm
Forum: General discussion
Topic: Programming anything on the pi 3
Replies: 12
Views: 2154

Re: Programming anything on the pi 3

mahjongg wrote:Other than that, there are no limits except those of memory availability and speed.
Even then, with patience, and swap space, and more patience, surprisingly large things may be run!
by jahboater
Fri Nov 25, 2016 4:40 pm
Forum: General discussion
Topic: Programming anything on the pi 3
Replies: 12
Views: 2154

Re: Programming anything on the pi 3

The official OS is called Raspbian. It is based on Debian but with many improvements and tuning for the Pi. It comes in a full version which is quite large but has all the graphics and office software pre-installed. There is also a Lite version with no graphics which is handy for running headless. B...
by jahboater
Fri Nov 25, 2016 4:29 pm
Forum: Advanced users
Topic: Use 3 heatsinks?
Replies: 8
Views: 5489

Re: Use 3 heatsinks?

Sometimes the heatsinks come in a pack of three, with a little one specially for the I/O chip. In which case you might as well use them, it does no harm.

But the main chip to worry about is the SoC as others have said.
by jahboater
Fri Nov 25, 2016 9:45 am
Forum: General discussion
Topic: Are there longer more effective Pi-sized heatsinks for sale?
Replies: 9
Views: 2547

Re: Are there longer more effective Pi-sized heatsinks for s

Here are some ceramic heat sink`s they use to have an 15x15 but it maybe out of stock. I think an 25x25 is the largest you can fit before you hit board components unless you use a shim to raise the heat sink up a bit. I have just fitted a 30x30 ceramic heatsink to a Pi2V2. Looks like its the larges...
by jahboater
Thu Nov 24, 2016 6:24 pm
Forum: General programming discussion
Topic: Making readable modifyable code.
Replies: 309
Views: 63878

Re: Making readable modifyable code.

zero execution time instructions are also true of the ARMv6/7/8. The difference that the ARM does not need to use speculative execution or other archane means to achieve zero execution of many instructions, and it is predictable, so long as you rely only on cache and RAM as your sources. I meant th...

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