[Arm-netbook] http://elinux.org/Embedded_Open_Modular_Architecture/EOMA-68#Table_of_EOMA-68_pinouts

[Luke Kenneth Casson Leighton]

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.

[Hrvoje Lasic]

Luke,

are you aware of this funding platform:

https://www.crowdsupply.com

here is difference between kickstarter:

http://www.core77.com/blog/starting_out/what_you_need_to_know_about_crowd_supply_the_new_crowdfunding_platform_for_product_designers_24589.asp

As you can see one open source laptop did really good:

https://www.crowdsupply.com/kosagi/novena-open-laptop




On Thu, Jul 24, 2014 at 10:56 PM, Luke Kenneth Casson Leighton <

Post by Luke Kenneth Casson Leighton
* 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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[Luke Kenneth Casson Leighton]

Post by Hrvoje Lasic
Luke,
https://www.crowdsupply.com

yes. i have a conference with them on monday.

[Miguel Garcia]

I visited the following page:
http://elinux.org/Embedded_Open_Modular_Architecture/EOMA-68#Table_of_EOMA-68_pinouts

I have seen that you have removed LCD Pixel Data bit 0, LCD Pixel Data
bit 1, LCD Pixel Data bit 8, LCD Pixel Data bit 9, LCD Pixel Data bit
16 and LCD Pixel Data bit 17. Does this have any effect on the LCD?

I saw you added * 43 POWER#. Would this be for the power button?

Post by Luke Kenneth Casson Leighton
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...

In my opinion, you only need a EOMA-68 with high features (like
Allwinner A80 or similar) for hardcore users and the whole market
would be covered.

[Luke Kenneth Casson Leighton]

Post by Miguel Garcia
http://elinux.org/Embedded_Open_Modular_Architecture/EOMA-68#Table_of_EOMA-68_pinouts
I have seen that you have removed LCD Pixel Data bit 0, LCD Pixel Data
bit 1, LCD Pixel Data bit 8, LCD Pixel Data bit 9, LCD Pixel Data bit
16 and LCD Pixel Data bit 17. Does this have any effect on the LCD?

honestly, not a lot. if it was only 5 bits per pixel then yes it
would start to be clearly visible as 5 bpp is only 32 shades. 6 bits
is 64 shades per colour.

Post by Miguel Garcia
I saw you added * 43 POWER#. Would this be for the power button?

yyup.

Post by Miguel Garcia

Post by Luke Kenneth Casson Leighton
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...

In my opinion, you only need a EOMA-68 with high features (like
Allwinner A80 or similar) for hardcore users and the whole market
would be covered.

yes but the A80 has PowerVR and if you have any sense don't touch it
with a 10ft barge pole. i'll be waiting for the A70 which i hear is
their planned pin-compatible quad-core with MALI.

i really want an intel soc but it is going to need a 14nm to make any
sense. even the 22nm latest intel SoCs are too power-hungry.

l.

[Miguel Garcia]

Post by Luke Kenneth Casson Leighton
yes but the A80 has PowerVR and if you have any sense don't touch it
with a 10ft barge pole. i'll be waiting for the A70 which i hear is
their planned pin-compatible quad-core with MALI.

What is the problem with PowerVR?

Post by Luke Kenneth Casson Leighton
i really want an intel soc but it is going to need a 14nm to make any
sense. even the 22nm latest intel SoCs are too power-hungry.

A EOMA-68 with Intel (Windows Pro and Linux x86) would be very interesting.

It also seems interesting Tegra K1 (64 bits).

[Luke Kenneth Casson Leighton]

Post by Miguel Garcia

Post by Luke Kenneth Casson Leighton
yes but the A80 has PowerVR and if you have any sense don't touch it
with a 10ft barge pole. i'll be waiting for the A70 which i hear is
their planned pin-compatible quad-core with MALI.

What is the problem with PowerVR?

look up luc verhaegen's talk... 1sec...

Post by Miguel Garcia

Post by Luke Kenneth Casson Leighton
i really want an intel soc but it is going to need a 14nm to make any
sense. even the 22nm latest intel SoCs are too power-hungry.

A EOMA-68 with Intel (Windows Pro and Linux x86) would be very interesting.

yeah exactly.

Post by Miguel Garcia
It also seems interesting Tegra K1 (64 bits).

i want that one :)

Post by Miguel Garcia
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[Miguel Garcia]

Post by Luke Kenneth Casson Leighton

Post by Miguel Garcia
A EOMA-68 with Intel (Windows Pro and Linux x86) would be very interesting.

yeah exactly.

Post by Miguel Garcia
It also seems interesting Tegra K1 (64 bits).

i want that one :)

However, I think that due to the limitations of money, it is better to
focus on a single EOMA-68 (in this case EOMA-68 A20 with 2GB RAM,
because it is already designed) to make known the product, and launch
more EOMA-68 later.

[Luke Kenneth Casson Leighton]

Post by Miguel Garcia

Post by Luke Kenneth Casson Leighton

Post by Miguel Garcia
A EOMA-68 with Intel (Windows Pro and Linux x86) would be very interesting.

yeah exactly.

Post by Miguel Garcia
It also seems interesting Tegra K1 (64 bits).

i want that one :)

However, I think that due to the limitations of money,

i'm now earning enough money to pay for at least one PCB set of
samples per month.

[Simon Kenyon]

Post by Miguel Garcia
I have seen that you have removed LCD Pixel Data bit 0, LCD Pixel Data
bit 1, LCD Pixel Data bit 8, LCD Pixel Data bit 9, LCD Pixel Data bit
16 and LCD Pixel Data bit 17. Does this have any effect on the LCD?
honestly, not a lot. if it was only 5 bits per pixel then yes it
would start to be clearly visible as 5 bpp is only 32 shades. 6 bits
is 64 shades per colour.

grabbing wrong end of stick

i though EOMA-68 was a standard that was not going to change?

[Luke Kenneth Casson Leighton]

Post by Simon Kenyon

Post by Miguel Garcia
I have seen that you have removed LCD Pixel Data bit 0, LCD Pixel Data
bit 1, LCD Pixel Data bit 8, LCD Pixel Data bit 9, LCD Pixel Data bit
16 and LCD Pixel Data bit 17. Does this have any effect on the LCD?
honestly, not a lot. if it was only 5 bits per pixel then yes it
would start to be clearly visible as 5 bpp is only 32 shades. 6 bits
is 64 shades per colour.

grabbing wrong end of stick
i though EOMA-68 was a standard that was not going to change?

the standard is a long-term standard that cannot be changed once the
first product in the range is launched. as the first product hasn't
been launched, i have the advantage and benefit of more time to think
"what would a long-term standard have in it?"

also because i am now working right now with *three* CPU Cards and
two base units simultaneously i have the advantage of being able to
think how to cover as many possibilities as can be done.

the IC1T has only 210 pins for example, yet the revisions made
recently *still* allow that IC to be within the standard.

l.

[Simon Kenyon]

Post by Luke Kenneth Casson Leighton

Post by Simon Kenyon

Post by Miguel Garcia
I have seen that you have removed LCD Pixel Data bit 0, LCD Pixel Data
bit 1, LCD Pixel Data bit 8, LCD Pixel Data bit 9, LCD Pixel Data bit
16 and LCD Pixel Data bit 17. Does this have any effect on the LCD?
honestly, not a lot. if it was only 5 bits per pixel then yes it
would start to be clearly visible as 5 bpp is only 32 shades. 6 bits
is 64 shades per colour.

grabbing wrong end of stick
i though EOMA-68 was a standard that was not going to change?

the standard is a long-term standard that cannot be changed once the
first product in the range is launched. as the first product hasn't
been launched, i have the advantage and benefit of more time to think
"what would a long-term standard have in it?"
also because i am now working right now with *three* CPU Cards and
two base units simultaneously i have the advantage of being able to
think how to cover as many possibilities as can be done.
the IC1T has only 210 pins for example, yet the revisions made
recently *still* allow that IC to be within the standard.
l.
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in that case:

- remove all connectors from the end of the card
- add as much ram as you can and double it
--
simon

Simon Kenyon
Managing Director. The Koala Computer Company Limited
e: simon at koala.ie
m: [phone]
l: http://ie.linkedin.com/pub/simon-kenyon/0/6b2/744/
s: simonckenyon
t: @simonckenyon
g: google.com/+SimonKenyon

[Luke Kenneth Casson Leighton]

Post by Simon Kenyon
- remove all connectors from the end of the card
- add as much ram as you can and double it

:) ok, the three cpus are all very different. the IC1T is aimed at
ultra-low cost devices: i believe it's around the $2 mark. its RAM
maxes out at 512mb. i've matched it with an SMIC9514 to give it 2
USBs and Ethernet. i'll put it with a TSOP-48 2gbyte NAND from
Foresee. it has very limited pins so there will be no extra
connectors. i think every single pin goes into the standard compliant
interfaces.

the A20 we know, it maxes out at 2gb, i don't want to make major
alterations so it stays with the RTL8201 (100mb/s eth) for now.

the Ingenic jz4775 can actually address 3gb RAM but for space reasons
i am only putting in 2gb, and because it is a new design i am putting
it with a GbE Phy. however the kernel driver needs improvement: as-is
it can manage 300mbit/sec. there is spare pins for an SD/MMC as well
as a NAND IC however that is the lot: no extras for HDMI, no extras
for USB-OTG: unlike the A20 there is only 1 USB-OTG (which goes to the
standard connector) and one 11mbit/sec USB 1.1 (which also goes to the
standard connector).

so they are all very different and all maxed out on space and RAM already.

l.