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by rpdom
Wed Sep 25, 2019 9:22 am
Forum: General discussion
Topic: Update for Rpi Zero W?
Replies: 74
Views: 2187

Re: Update for Rpi Zero W?

mahjongg wrote:
Wed Sep 25, 2019 12:18 am
Only the current SoC, which has 512K RAM on top (PoP technology) can be used
Well, the 512K version must have been very old. I only have the 512MB version ;-)
by rpdom
Tue Sep 24, 2019 5:13 pm
Forum: General discussion
Topic: Wil the usb port work as ethernet port
Replies: 4
Views: 127

Re: Wil the usb port work as ethernet port

Are the PCs on different networks?

If not, then just plug the Pi into your switch or router exactly the same as any other computer.
by rpdom
Tue Sep 24, 2019 11:29 am
Forum: General discussion
Topic: Connecting raspberry pi to phone line
Replies: 28
Views: 6850

Re: Connecting raspberry pi to phone line

This matters because telephone exchanges have significant backup power capability Actually very little, but enough to keep them running for a few hours. I have been in the main telephone exchange in the city centre here where I was setting up a couple of servers for them. It was a huge almost empty...
by rpdom
Tue Sep 24, 2019 7:38 am
Forum: Raspbian
Topic: Exchanging raspbian buster between raspberry pi4 and raspberry pi3 is ok?
Replies: 6
Views: 370

Re: Exchanging raspbian buster between raspberry pi4 and raspberry pi3 is ok?

There are some idiosyncrasies with both the 3 and the 4 that will require separate config and tuning settings for some apps. For example the latest Kodi has different tweaks for both. However, a basic install of Raspbian should be transportable between a 3 and a 4 and just work. Any changes in the ...
by rpdom
Tue Sep 24, 2019 7:34 am
Forum: General discussion
Topic: Connecting raspberry pi to phone line
Replies: 28
Views: 6850

Re: Connecting raspberry pi to phone line

Many phone lines use Cat 5 cables and just exclude the unused wires and I have seen phone lines running into ethernet jacks on a punch panel for VOIP it won't fry anything. I'm not saying he wire the GPIO pins into a phone line. VOIP uses Ethernet, not phone lines. Structured wiring is often used t...
by rpdom
Mon Sep 23, 2019 8:08 pm
Forum: Compute Module
Topic: Compute board RPI4
Replies: 5
Views: 423

Re: Compute board RPI4

I suspect there will be a CM4 at some point. This is just guessing. I have no insider knowledge.
by rpdom
Mon Sep 23, 2019 6:40 pm
Forum: General discussion
Topic: RPI4: Why is everything still 32-bit?
Replies: 180
Views: 6233

Re: RPI4: Why is everything still 32-bit?

There is a difference between selling at virtually zero profit and making a loss.
by rpdom
Mon Sep 23, 2019 4:57 pm
Forum: General discussion
Topic: RPI4: Why is everything still 32-bit?
Replies: 180
Views: 6233

Re: RPI4: Why is everything still 32-bit?

I personally think we need a larger team, but that is not my call to make. And finding decent, dedicated people is not easy. We've pretty much run out of ex-Broadcom people who are a known quantity (many now work at Amazon where the salaries are v. good!). We do take on the occasional graduate (bei...
by rpdom
Mon Sep 23, 2019 4:20 pm
Forum: General discussion
Topic: RPI4: Why is everything still 32-bit?
Replies: 180
Views: 6233

Re: RPI4: Why is everything still 32-bit?

Hiring more engineers to complement the EXCELENT team you have might be the solution. RPT have been hiring more engineers and other people. They are a much bigger team than when they started (and expected to sell a few thousand Pi at most). Even so, that small team is managing (just) to do what som...
by rpdom
Mon Sep 23, 2019 4:10 pm
Forum: General discussion
Topic: RPI4: Why is everything still 32-bit?
Replies: 180
Views: 6233

Re: RPI4: Why is everything still 32-bit?

PeterO wrote:
Mon Sep 23, 2019 1:54 pm
rpdom wrote:
Mon Sep 23, 2019 1:00 pm
PeterO wrote:
Mon Sep 23, 2019 10:38 am
It would be remiss of me not to mention that I still maintain and use a 39 bit machine. It may be in a museum, but it still counts :-) (Pun intended :lol: )
That's an odd number of bits.
It's both odd (not even) and odd (unusual) :-)
Yes. Hence my post :-)
by rpdom
Mon Sep 23, 2019 1:08 pm
Forum: General discussion
Topic: RPI4: Why is everything still 32-bit?
Replies: 180
Views: 6233

Re: RPI4: Why is everything still 32-bit?

So to deal with your points; I think you've wasted your breath. This looks like ChuUK under a new account posting the same nonsense that has already been addressed. He'll ignore everything you said and then go spam another unrelated thread. But it is worth pointing it out. Not for the spammer, but ...
by rpdom
Mon Sep 23, 2019 1:06 pm
Forum: General discussion
Topic: RPI4: Why is everything still 32-bit?
Replies: 180
Views: 6233

Re: RPI4: Why is everything still 32-bit?

We are not using 6502's any more. You don't get data from memory when you think you get data from memory. Jamesh Very good point. I started with the very first ARM chips (1, 2 and 3). Back then memory accesses weren't cached. It was a simple pipeline running Fetch, Decode and Execute in three clock...
by rpdom
Mon Sep 23, 2019 1:00 pm
Forum: General discussion
Topic: RPI4: Why is everything still 32-bit?
Replies: 180
Views: 6233

Re: RPI4: Why is everything still 32-bit?

PeterO wrote:
Mon Sep 23, 2019 10:38 am
It would be remiss of me not to mention that I still maintain and use a 39 bit machine. It may be in a museum, but it still counts :-) (Pun intended :lol: )
That's an odd number of bits.
by rpdom
Mon Sep 23, 2019 10:21 am
Forum: General discussion
Topic: RPI4: Why is everything still 32-bit?
Replies: 180
Views: 6233

Re: RPI4: Why is everything still 32-bit?

I haven't looked either, but the common practice is to keep instructions the same size, just increase the register and data size. Lol! Look at x86 with 8, 16, 24, 32 and more instruction sizes. ARM started with 32 bit instructions. Later came Thumb with a reduced 16 bit instruction set for speed. I...
by rpdom
Mon Sep 23, 2019 9:08 am
Forum: General discussion
Topic: Oracle's New Supercomputer Has 1,060 Raspberry Pis
Replies: 41
Views: 1819

Re: Oracle's New Supercomputer Has 1,060 Raspberry Pis

To be honest, I think this probably does qualify, just about. For some distributed tasks, the interconnect may not be relevant, so you just need to calculate FLOPs, and a 1000 cores is quite a few flops. 1000 odd Pi 3Bs with four ARM cores per board would be over 4000 cores! Using distributed proce...
by rpdom
Mon Sep 23, 2019 8:36 am
Forum: Beginners
Topic: Flash Player on Pi4
Replies: 5
Views: 167

Re: Flash Player on Pi4

Are there websites still using the ancient and obsolete Flash format?
by rpdom
Mon Sep 23, 2019 8:34 am
Forum: General discussion
Topic: Oracle's New Supercomputer Has 1,060 Raspberry Pis
Replies: 41
Views: 1819

Re: Oracle's New Supercomputer Has 1,060 Raspberry Pis

To be honest, I think this probably does qualify, just about. For some distributed tasks, the interconnect may not be relevant, so you just need to calculate FLOPs, and a 1000 cores is quite a few flops. 1000 odd Pi 3Bs with four ARM cores per board would be over 4000 cores! Using distributed proce...
by rpdom
Mon Sep 23, 2019 8:03 am
Forum: General discussion
Topic: RPI4: Why is everything still 32-bit?
Replies: 180
Views: 6233

Re: RPI4: Why is everything still 32-bit?

But you said you don't see the number "64" anywhere. I pointed out it was mentioned. I didn't say anything about the OS.

Personally I think someone should create a 42-bit CPU, but that's an infinite improbability.
by rpdom
Mon Sep 23, 2019 8:00 am
Forum: Beginners
Topic: Button on stripboard not working
Replies: 3
Views: 75

Re: Button on stripboard not working

That orientation of the switch should work. Can you show your code?

I'd not recommend soldering to the GPIO pins. I'd use jumper cables (Dupont) instead.

Also, are those wires insulated? They look like they may be touching.
by rpdom
Mon Sep 23, 2019 6:50 am
Forum: Raspbian
Topic: does not boot
Replies: 12
Views: 250

Re: does not boot

Mafia8540 wrote:
Sun Sep 22, 2019 11:35 pm
DougieLawson wrote:
Sun Sep 22, 2019 9:46 pm
Now run

sudo apt install --reinstall raspberrypi-kernel raspberrypi-bootcode

To undo the damage. That will also get the latest stable kernel and bootcode for you.
the package raspberrypi-bootcode could not be found
It's raspberrypi-bootloader, not bootcode.
by rpdom
Mon Sep 23, 2019 6:44 am
Forum: Off topic discussion
Topic: What was your first computer?
Replies: 430
Views: 159017

Re: What was your first computer?

do "calculators" qualify as "computers"? or the question "....does not compute..."? :mrgreen: If the first code someone wrote was for a programmable calculator, that sounds like an interesting post to make on this thread. I have a friend who some time ago claimed one of the best ways to learn progr...
by rpdom
Mon Sep 23, 2019 6:40 am
Forum: General discussion
Topic: PIA Private Internet Access Servers
Replies: 2
Views: 118

Re: PIA Private Internet Access Servers

I think you need to give us more information.

Connect and log in how?

What sort of servers?

What protocol? http, ssh or other?

Using what software? Browser, command line?
by rpdom
Mon Sep 23, 2019 6:38 am
Forum: Beginners
Topic: can i plug old monitor's built-in speakers into the pi3?
Replies: 6
Views: 172

Re: can i plug old monitor's built-in speakers into the pi3?

i read the old posts about the audio port of the pi3 not working with pc speakers due to insufficient power,... I don't know where you read that, but it's not the case. In general, "PC speakers" are self-powered and that's exactly what one is looking for in speakers for a Pi. Some of the smaller an...
by rpdom
Mon Sep 23, 2019 6:35 am
Forum: General discussion
Topic: RPI4: Why is everything still 32-bit?
Replies: 180
Views: 6233

Re: RPI4: Why is everything still 32-bit?

sal55, Recent PIs have been advertised as using 64-bit processors. Really, where? I don't even see the number 64 appearing here: https://www.raspberrypi.org/ https://www.raspberrypi.org/products/raspberry-pi-4-model-b/ https://www.raspberrypi.org/downloads/raspbian/ It is buried away in the tech sp...
by rpdom
Mon Sep 23, 2019 6:27 am
Forum: Python
Topic: using the datetime module in python3
Replies: 2
Views: 130

Re: using the datetime module in python3

Will you share your experience with us?

Raspbian should get the current date and time of day from time servers on the internet.

If you have had problems with that and solved them you may be able to help, or even just reassure, other people who may have the same issue or questions.

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