[Arm-netbook] EOMA server standard

[luke.leighton]

On Sat, Oct 27, 2012 at 1:57 PM, Simon Kenyon <simon at koala.ie> wrote:
> On 10/26/12 18:58, luke.leighton wrote:
>>   no.  absolutely not.  whatever the cost of that chip is, it's
>> automatically too much.  see b), below, which i note conspicuously you
>> didn't reply to or say "fair enough" or anything :)
>>
>>   it could be $0.50 for that chip, but automatically that's too much,
>> esp. as that could be *greater* than the entire profit margin for a
>> mass-volume 100 million+ units product.
>>
>>>> b) for a 5 to 7in tablet with a low-cost 800x480 LCD (or a 480x320 or
>>>> even less), in the critical price-sensitive bracket, you'd need a
>>>> converter IC from composite video over to the low-cost RGB/TTL 800x480
>>>> LCDs.
>
> so have a completely separate standard. call it EOMA-136.

 yes.

> use a double height card and have two connectors (for which existing
> slot hardware already exists). the casework would be custom but
> constructing the card would not be difficult with two pcbs with 68-pin
> connectors bolted together with the correct spacing. could use a pin and
> socket arrangement to join them electrically.

 yeah!  now you're getting it :)

> double the pins and double the pcb real estate.
>
> sometimes one size does not fit all

 ... tell me about it :)

 ... actually, i was talking with my friend by phone yesterday about
this "stacked" concept,  he was concerned about PCMCIA connectors not
lining up completely, and people bending the pins.  esp if you have a
4-height "stacked" CPU block.

 so it may prove necessary to find a more robust connector and socket
i started looking around, and SCSI is still around, amazingly, albeit
in 3.5in width, but with a 4-pin standard power connector and
(coincidentally) 68 pins.

l.