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a33 quad-core cpu card

http://rhombus-tech.net/allwinner/a33/news/

well i received the documentation middle of last week, i basically
started yesterday evening and am almost 50% done already!  the a33
would be the first quad-core cpu card, with 2gb RAM.  can't do much
about etherhet, it has to be an SMC9514.  but that's pretty awesome.

l.

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Miguel Garcia | 27 Jul 14:04 2014
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IC for analog and digital buttons (EOMA-68)

We are designing a handheld-game console (based on EOMA-68).

The problem is that EOMA-68 has very few GPIO.

We have 17 digital buttons, 2 analog joystick (
http://www.digikey.com/product-detail/en/254TA103B50B/254TA103B50B-ND/1755918
) and 2 analog triggers (
http://www.digikey.com/product-detail/en/EVA-W7NR04B34/P13569-ND/1135944
).

Luke will use on the tablet the next IC: PCA9536.

However, this component does not meet our requirements.

Does anyone know a IC that meets these requirements (at least 17
digital buttons and at least 4 ADCs)?

Thanks.

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http://elinux.org/Embedded_Open_Modular_Architecture/EOMA-68#Table_of_EOMA-68_pinouts

more revisions to the interface, these are last-minute just before finalising:

* the revision 2.2 A20 cpu card
* the revision 0.1 ICubeCorp IC1T cpu card
* the revision 0.1 Ingenic JZ4775 cpu card
* the revision 0.1 Micro-Desktop base board
* the revision 3.0 Tablet / Mini-Laptop base board
* also i have received the documents for the quad-core Allwinner A33
so will be starting a CPU card for that with 2GB RAM, shortly.

i will have enough money coming in beginning of this month to send the
revision 2.2 A20 CPU Card off to the factory for 5 samples.  the
revision 0.1 Micro-Desktop will follow very shortly after that.

the IC1T icubecorp found me an SD-based TSOP-48 from a company called
FORESEE, which comes in a low-cost 2GB variant.  i will add that in
(replacing the BGA variant which is 4Gb minimum, requires very small
tracks, is more expensive and is making me nervous).

the jz4775 cpu card i had to do a minor shuffle of the I/O lines as
there was some I/O multiplexing sharing SPI with MMC so there is a bit
more work there.

heck of a lot going on, it is ironic that about four really good CPU
cards should all come out pretty much at the same time...

l.

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(Continue reading)

Philip Hands | 24 Jul 22:34 2014

sunxi-tools in Debian

Hi,

I just noticed this on planet.debian.org, and thought it likely to be of
interest to some people here:

  http://www.hellion.org.uk/blog/posts/sunxi-tools-in-debian/

  [from Ian Campbell's blog]

Cheers, Phil.
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tablet/laptop pcb rev3

ok opportunity with the cpu card interface redesign to do a layout
change, i'm taking out the atsam4s and replacing it with a VC0345
camera IC, PCA9536 I2C-to-GPIO converter, and am putting in a Micro-SD
on the top edge of the PCB (so that things like the IC1T card can use
it).  ethernet and the extra USB i will route to an FPC which can go
to a daughterboard for when this is used in a mini laptop.  USB audio
remains as-is using the CM108AH.

basically the tablet pcb becomes a usb / i2c peripheral board,
something i didn't want to do because i wanted the educational and
experimentation sector covered as well.

l.

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lkcl . | 15 Jul 22:19 2014
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ingenic jz4775

wow, it turns out that the full source code for everything -
*including* the VPU - is available.  i am amazed and delighted.
full source code download instructions are here:
http://www.ingenic.cn/en/en/download.php?pid=857&fid=795
l.

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IC1T and jz4775 news pages

for when phil's server (or rapidswitch) are responding, these will be available:

http://rhombus-tech.net/icubecorp/IC1T/news/
http://rhombus-tech.net/ingenic/jz4775/news/

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list upgraded

If there is anyone with a dmark setting address (eg yahoo.com) their emails will
be treated slightly differently but it should work.

They may find that they have an administrative block put on them -- I did that
to prevent problems earlier. Please ask and it will be removed.

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Alain Williams | 10 Jul 17:13 2014
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This list may be up & down for a bit

I am going to update the software to mailman 2.1.18-1

My motivation is to deal with the problems that were causes by yahoo a few
months ago when it changed its dmarc settings. This was why yahoo users were
forbidden from posting to the list. This should fix this; the new version has
been out for a couple of months and should (hopefully) not cause problems.

Those interested in the nitty gritty look at: http://list.org/mailman-admin.txt
and search for 'dmarc'.

This will happen over the next day or two.

Regards

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[status] jz4775 and ic1t boards

ok both the jz4775 and ic1t cpu cards pass routing and plane
(connectivity) checks, it's what i've been spending my evenings on,
over the past couple of weeks.  i have to consider replacing the
SD/MMC card slot on the IC1T board with a BGA 11mm eMMC because SD/MMC
is not as reliable, eMMC has 8 data lines and will be faster.  BGA 159
pin eMMC will just about fit and will simplify the design slightly.

more later, will create PCB images etc.

l.

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Lauri Kasanen | 6 Jul 13:07 2014
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HummingBoard becomes partially what eoma would've been

Hi,

They announced the HummingBoard recently. Its specialty is that the
outer interface is rpi-compatible, but the cpu and ram can be replaced.

So while the interface is not open I believe, that's getting closer to
what eoma would have been. Thought to let you know.

- Lauri

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Gmane