> From: Peter Blodow [mailto:p.blo...@dreki.de]
> Yeah, and these "skewy" bits were the reason why in the days of parallel
> bus connections all operations had to be acknowledged on separate wires
> so it was made sure the bits had arrived correctly. This made
> connections slow, but terribly relia
Yeah, and these "skewy" bits were the reason why in the days of parallel
bus connections all operations had to be acknowledged on separate wires
so it was made sure the bits had arrived correctly. This made
connections slow, but terribly reliable. The DEC computer series like
the VAXes were an
...
> Buses are changing from mostly parallel to serial. PCI is going that way
> and USB3.x is very promising. It's direction most computer vendors are
> taking. Simplifies cabling over longer distances if nothing else.
I went to school (computer engineering) in the late 70's' and early
80's back
> RasPI and Beagle and all these other things have life cycles more in line
> with smart phones - this year's new shiny is considered obsolete next year,
> and the replacement is far less likely to be a "drop-in", so you wind up
> needing new breakout boards or other interface hardware.
I don't to
This post scratches slightly on a chutzpah
On 2016-02-03 19:33, Rafael wrote:
> On 02/03/2016 10:00 AM, Sarah Armstrong wrote:
>> i'm sorry but the topic or question was ? , as posted by the OP
>>
> Threads evolve sometimes so relax. It's not the first time that things
> go a bit out of hand.
On 02/03/2016 10:00 AM, Sarah Armstrong wrote:
> i'm sorry but the topic or question was ? , as posted by the OP
>
Threads evolve sometimes so relax. It's not the first time that things
go a bit out of hand.
Now that you sit so tight, how about trimming email first? Including two
footnotes?
Loo
> -Original Message-
> From: John Kasunich [mailto:jmkasun...@fastmail.fm]
> Sent: February-03-16 9:00 AM
> To: emc-users@lists.sourceforge.net
> Subject: Re: [Emc-users] Prempt RT on Linux Mint
>
> Another problem with all these boards is that they have "flash
i'm sorry but the topic or question was ? , as posted by the OP
On 3 February 2016 at 17:48, Rafael wrote:
> On 02/03/2016 09:00 AM, John Kasunich wrote:
> >
> >
> > On Wed, Feb 3, 2016, at 11:49 AM, Rafael wrote:
> >
> >>
> >> Problem with all those boards is in the fact that they have no commo
> > Problem with all those boards is in the fact that they have no common
> > bus so that others could build standard interfaces on open architecture.
> > All seem to be built to replace a PC with most of it's functionality.
> >
> > Want to make a common box, bad luck. Everybody comes with their
On 02/03/2016 09:00 AM, John Kasunich wrote:
>
>
> On Wed, Feb 3, 2016, at 11:49 AM, Rafael wrote:
>
>>
>> Problem with all those boards is in the fact that they have no common
>> bus so that others could build standard interfaces on open architecture.
>> All seem to be built to replace a PC with m
On Wed, Feb 3, 2016, at 11:49 AM, Rafael wrote:
>
> Problem with all those boards is in the fact that they have no common
> bus so that others could build standard interfaces on open architecture.
> All seem to be built to replace a PC with most of it's functionality.
>
> Want to make a comm
>
>> Large CNC systems require more computing power of course, but that too
>> should not be a problem for decent IO cards independent of motherboard
>> latency.
>
> Well actually I expect more computing power will be needed in small machine
> where fast dynamic responce is required. I also expect
on [albertson.ch...@gmail.com]
> Sent: Wednesday, February 03, 2016 7:35 AM
> To: Enhanced Machine Controller (EMC)
> Subject: Re: [Emc-users] Prempt RT on Linux Mint
>
> The problem is the EMC2 is an old program designed when hardware was
> different. Today no one would design it as
> The problem is the EMC2 is an old program designed when hardware was
> different. Today no one would design it as one big app that runs on a
> a PC with an RT OS.
>
> Starting over from scratch I'd put the real-time functions on a low
> cost commodity single board computer. ...
The real time f
3, 2016 7:35 AM
To: Enhanced Machine Controller (EMC)
Subject: Re: [Emc-users] Prempt RT on Linux Mint
The problem is the EMC2 is an old program designed when hardware was
different. Today no one would design it as one big app that runs on a
a PC with an RT OS.
Starting over from scratch I'
The problem is the EMC2 is an old program designed when hardware was
different. Today no one would design it as one big app that runs on a
a PC with an RT OS.
Starting over from scratch I'd put the real-time functions on a low
cost commodity single board computer. One of the best is Texas
Instru
> For example, Digital minicomputers were much slower compared to PC
> motherboards, yet they were able to handle industrial applications just
> fine. Application ran in RT OS to handle DIO or analog signals.
>
> Old PDP HW is getting replaced with special PC cards that are able to
> run origin
> > There are two or 3 that mention LinuxCNC as a possibility
> > but they do not support it. Why? That's because NOBODY
> > (manufacturers or distributors) wants to futz with testing
> > motherboard latencies,
> Mach3 also required a motherboard with certain
> characteristics, or the results c
On 02/02/2016 02:59 PM, andy pugh wrote:
> On 2 February 2016 at 22:45, Peter C. Wallace wrote:
>> This might be true with parallel port software stepping systems that require
>> a
>> high speed base thread for pulse generation and perhaps encoder counting,
>> but is not the case at all for servo
On 02/02/2016 06:34 PM, Jon Elson wrote:
> On 02/02/2016 02:08 PM, Rafael wrote:
>> Why use this, why not use that? This is precisely why
>> LinuCNC has no traction in commercial products. Unless
>> things have changed in the last 2 months, you cannot find
>> a single CNC machine or good kit on the
On 2/2/2016 2:08 PM, Rafael wrote:
> Why use this, why not use that? This is precisely why LinuCNC has no
> traction in commercial products. Unless things have changed in the last
> 2 months, you cannot find a single CNC machine or good kit on the market
> that comes with LinuxCNC.
Incorrect. Torma
On 02/02/2016 02:08 PM, Rafael wrote:
> Why use this, why not use that? This is precisely why
> LinuCNC has no traction in commercial products. Unless
> things have changed in the last 2 months, you cannot find
> a single CNC machine or good kit on the market that comes
> with LinuxCNC.
Have yo
On 2016-02-02 23:59, andy pugh wrote:
> On 2 February 2016 at 22:45, Peter C. Wallace wrote:
>> This might be true with parallel port software stepping systems that require
>> a
>> high speed base thread for pulse generation and perhaps encoder counting,
>> but is not the case at all for servo th
> ... There seems to be an obsession with getting super-low latency
> and a concomitant belief that unless you can get into single-digit
> microseconds you might as well give up.
It is small delays happening every now and then that cause problem, there migth
be in average one warning per minute f
On 2 February 2016 at 22:45, Peter C. Wallace wrote:
> This might be true with parallel port software stepping systems that require a
> high speed base thread for pulse generation and perhaps encoder counting,
> but is not the case at all for servo thread only systems,
I don't think that it is n
On Tue, 2 Feb 2016, Rafael wrote:
> Date: Tue, 2 Feb 2016 12:08:59 -0800
> From: Rafael
> Reply-To: "Enhanced Machine Controller (EMC)"
>
> To: "Enhanced Machine Controller (EMC)"
> Subject: Re: [Emc-users] Prempt RT on Linux Mint
>LinuxCNC and simi
answer/comment in line
On Tue, Feb 2, 2016 at 2:08 PM, Rafael wrote:
> On 02/02/2016 04:56 AM, Sarah Armstrong wrote:
> > i dont see why not , but the patch will be different probably , i'd need
> to
> > try it
> > why use ubuntu ? , thats another can of worms to get in the way .
> >
> > debian
On 02/02/2016 04:56 AM, Sarah Armstrong wrote:
> i dont see why not , but the patch will be different probably , i'd need to
> try it
> why use ubuntu ? , thats another can of worms to get in the way .
>
> debian now has the 2 desktops that minit as
>
Why use this, why not use that? This is precis
I can say a word about my journey through Linux distributions and DEs.
The main reason why I came to Linux was LinuxCNC. I started from Ubuntu
10 x86 as such image was offered by LinuxCNC. And I made myself
comfortable with it including for casual tasks.
Later on I moved to Debian Wheezy x86 wit
Well Linux Mint with Mate is a much better behaved desktop. Having said
that and I think I tried Debian with Mate with poor results. I'll have
to dig through my pile of disks to see... maybe not, the only one I
tried is the net install which only offers gnome, kde, lxde and xfce.
JT
On 2/2/201
i dont see why not , but the patch will be different probably , i'd need to
try it
why use ubuntu ? , thats another can of worms to get in the way .
debian now has the 2 desktops that minit as
things are moving away from ubuntu ,for lots of reasons , some of it is a
bit deeper , such as python b
Is it possible to build the Prempt-RT kernel on Linux Mint 13 based on
Ubuntu Precise or Linux Mint 17 based on Ubuntu Trusty? This is to be
able to use LinuxCNC uspace with a 7i92.
Thanks
JT
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