Re: [Arm-netbook] C++ features

2016-10-02 Thread peter green 

On 02/10/16 15:37, FaTony wrote:

Hi. I'm making a C++ game engine and interested in supporting the A20
board. I wonder what features are available there. What's the gcc/g++
version?
Depends on what release of what distro, generally these things are more 
of a distro thing than a board. Thing.

  Is there a std::uint64_t type defined?
I would be very surprised if there wasn't, uint64_t has been arround for 
years.



  Can it do 64 bit
floating point.
   
Assuming you mean double precision floating point, of course it can. We 
aren't talking microcontroller cores here.


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Re: [Arm-netbook] C++ features

2016-10-02 Thread Paul Boddie 
On Sunday 2. October 2016 18.42.00 FaTony wrote:
> > I imagine that the supported gcc version will be that provided by the
> > distributions being offered. For Debian, you can find out versions by
> 
> > searching on the packages site:
> Hmm, what version of Debian is preinstalled in the Debian card? I've
> read that it uses custom linux-sunxi kernel so thought it's some kind of
> a custom distro.

I don't know the official situation, but the kernel need not have any impact 
on the distribution. For example, I compile my own kernel for a MIPS-based 
device I occasionally use, but it still runs the standard distribution of 
Debian.

People have "spun" their own custom distributions for various devices, but 
that usually happens out of necessity (using an unsupported architecture 
variant, for example) and/or under some impression that things can be 
"optimised" for a particular piece of hardware. But it should be the last 
resort if only because distributing the software will generally bring with it 
a significant support obligation. (The distributor will need to offer the 
software semi-permanently with corresponding sources and ongoing updates.)

I imagine that Luke will try and stay as close to the upstream distributions 
as possible. That's what I would do, anyway.

Paul

P.S. The effort of "spinning up" a distribution is arguably a lot greater than 
just getting a bootloader and kernel working for a device, which is why I was 
surprised that he dropped the jz4775 card, given that it only needed 
confirmation that u-boot and the Linux kernel were compatible. But then again, 
he also wanted FSF "Respects Your Freedom" certification for the distribution, 
and none of the certified distributions support mipsel: Debian does (and is 
not certified), but gNewSense (being Debian filtered for RYF certification 
purposes) does not presently (and without suitable hardware probably won't in 
future, either).

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Re: [Arm-netbook] C++ features

2016-10-02 Thread FaTony 
> I imagine that the supported gcc version will be that provided by the 
> distributions being offered. For Debian, you can find out versions by 
> searching on the packages site:

Hmm, what version of Debian is preinstalled in the Debian card? I've
read that it uses custom linux-sunxi kernel so thought it's some kind of
a custom distro.



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Re: [Arm-netbook] EOMA68 R/Evolution bumper sticker

2016-10-02 Thread Luke Kenneth Casson Leighton 
brilliant thx yann.  am off to shenzen tomorrow morning will take a
look when i get a chance.
---
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On Sun, Oct 2, 2016 at 3:51 PM, ykmmli...@gmail.com  wrote:
> Sorry for the late reply, but life/work stuff had to be done.
>
> I have managed to get a v4.2 where lines are straight, and the rounded shape
> deformations are much better.
>
> It can be seen here
> https://github.com/ykmm/eoma68sticker/blob/master/EOMA68-sticker.svg
>
> Personally I like both v3 and v4.2
>
> Yann
>
> On 09/22/2016 05:04 PM, Yann wrote:
>>
>>
>> However I'll try to fix a little v4.1 this evening.
>>
>
>
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Re: [Arm-netbook] C++ features

2016-10-02 Thread Paul Boddie 
On Sunday 2. October 2016 16.37.00 FaTony wrote:
> Hi. I'm making a C++ game engine and interested in supporting the A20
> board. I wonder what features are available there. What's the gcc/g++
> version? Is there a std::uint64_t type defined? Can it do 64 bit
> floating point?

I imagine that the supported gcc version will be that provided by the 
distributions being offered. For Debian, you can find out versions by 
searching on the packages site:

https://www.debian.org/distrib/packages

Searching for "gcc" should provide results that employ descriptive package 
versions corresponding to the actual gcc version involved in each case 
(although you may need to strip off prefixes like "4:" and suffixes like "-1" 
as in "4:6.1.1-1" to get "6.1.1").

I see gcc 6.2.0 on Debian unstable, myself, but that's on i386. Nevertheless, 
the supported architectures tend to offer the same versions of things if at 
all possible. My cross-compilers seem to be 5.4.0, but an update is apparently 
pending with those.

I can't answer the specific questions about the A20, but maybe the gcc ARM-
related notes can provide some answers. For example:

https://gcc.gnu.org/onlinedocs/gcc-6.2.0/gcc/ARM-Options.html

Paul

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[Arm-netbook] C++ features

2016-10-02 Thread FaTony 
Hi. I'm making a C++ game engine and interested in supporting the A20
board. I wonder what features are available there. What's the gcc/g++
version? Is there a std::uint64_t type defined? Can it do 64 bit
floating point?



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Re: [Arm-netbook] EOMA Specification / Documentation Issues

2016-10-02 Thread Luke Kenneth Casson Leighton 
---
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On Sun, Oct 2, 2016 at 10:49 AM, Vincent Legoll
 wrote:
> Hello,
>
> On Sun, Oct 2, 2016 at 10:25 AM, Luke Kenneth Casson Leighton wrote:
>>> There are problems with the H3 (& variants) display driver, on the
>>> HDMI output front,
>>> as seen on : http://linux-sunxi.org/GPL_Violations
>>>
>>> Currently the driver cannot be mainlained as-is.
>>
>> ... and as direct a result the H3 has been crossed off the list for
>> consideration and inclusion in EOMA Cards.
>
> That may change, as it needs only some license clarification on some published
> code from AW. And knowledge of the HDMI PHY model they used (which differs
> from the previous generations of HW).
>
> Do you have contacts inside AW for the groups that created this chip, maybe 
> you
> could try a bit of lobbying in that case...

 i'll be talking to the teams, yes.  bear in mind that each team is
completely independent and controlled by different investors.

l.

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Re: [Arm-netbook] EOMA Specification / Documentation Issues

2016-10-02 Thread Vincent Legoll 
Hello,

On Sun, Oct 2, 2016 at 10:25 AM, Luke Kenneth Casson Leighton wrote:
>> There are problems with the H3 (& variants) display driver, on the
>> HDMI output front,
>> as seen on : http://linux-sunxi.org/GPL_Violations
>>
>> Currently the driver cannot be mainlained as-is.
>
> ... and as direct a result the H3 has been crossed off the list for
> consideration and inclusion in EOMA Cards.

That may change, as it needs only some license clarification on some published
code from AW. And knowledge of the HDMI PHY model they used (which differs
from the previous generations of HW).

Do you have contacts inside AW for the groups that created this chip, maybe you
could try a bit of lobbying in that case...

Cheers

-- 
Vincent Legoll

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Re: [Arm-netbook] EOMA Specification / Documentation Issues

2016-10-02 Thread Luke Kenneth Casson Leighton 
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On Sun, Oct 2, 2016 at 9:03 AM, Vincent Legoll  wrote:
> Hello,
>
> On Tue, Sep 27, 2016 at 4:55 PM, mike.v...@gmail.com
>  wrote:
>> Not quite sure that is the case. U-Boot provides "early" setup, regulator
>> and clocks etc., for u-boot output. SimpleFB takes over the settings from
>> U-Boot (via u-boot modified device-tree). But a proper KMS/DRM driver (sunxi
>> has something working for A13, H3, A33) may change all that.
>
> There are problems with the H3 (& variants) display driver, on the
> HDMI output front,
> as seen on : http://linux-sunxi.org/GPL_Violations
>
> Currently the driver cannot be mainlained as-is.

... and as direct a result the H3 has been crossed off the list for
consideration and inclusion in EOMA Cards.

l.

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[Arm-netbook] Gamechangers GO Course

2016-10-02 Thread Luke Kenneth Casson Leighton 
well, i signed up for the gamechangers go course that my friend
informed me about.  the course is specifically targetted to encourage
people to use wisdom and integrity in their purpose, with the primary
focus being on "changing the game" in their chosen field.  it sounded
perfect, and exactly what i need, so i signed up.  the cost is $3,000
and i have negotiated payment of that over 12 months, or until such
time as i raise sufficient income from sources *not* related to the
crowd-funding campaign (which presently total around GBP 700 and there
is more on the way).

the first assignment is here (discussion online took place at 5:30am
this morning...) and was around the following:
http://gcgo.lkcl.net/2016_course/prompt_1/

and my response (which you are all invited to comment on) is here:
http://gcgo.lkcl.net/2016_course/prompt_1/lkcl/

now, as the course is *defined* as "encouraging its participants to
act with integrity and wisdom in their chosen game-changing life
purpose", i was a leeetle bit surprised when, without any discussion,
consultation or consent, my inbox was flooded with signup demands for
proprietary privacy-violating services, accompanied by a message that
all communications forthwith regarding the course would henceforth
take place exclusively through the same.

oink.

a series of increasingly-specific communications with the organisers
was therefore escalated, and the proprietary SaaSS subscriptions
cancelled (for me).  i have therefore set an assignment for the
organisers of the course, for them to provide satisfactory answers for
both myself and for you.  you are therefore invited to participate in
the discussion of the questions raised (please do not edit them
yourself):
http://gcgo.lkcl.net/2016_course/organisers_prompt_1/discussion/

where the background and questions for the organisers are here:
http://gcgo.lkcl.net/2016_course/organisers_prompt_1/

the purpose of writing that to the organisers should be fairly clear.
any questions feel free to raise them here (or in the discussion as
appropriate)

l.

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