[Arm-netbook] Handheld Games Console

Luke Kenneth Casson Leighton lkcl at lkcl.net
Wed Sep 23 15:54:29 BST 2015


On Wed, Sep 23, 2015 at 2:59 PM, GaCuest <gacuest at gmail.com> wrote:

> I’m using AirMail. It has plain text editing, but not line-wrap.
> I will do that manually.

 appreciated.

> I updated the block diagram:
> http://rhombus-tech.net/community_ideas/games_console/news/pcb_block_diagram_updated2_23sep2015/
>
> Anything more to change?

 yes, one thing that's important: 1st USB is mandated to be >= speed
than 2nd USB.  so you need to swap 1st USB with 2nd USB.

 reason: the STM32F is connected to the port that may end up being
480mbit/sec and the USB Hub is connected to the port that may end up
being only 11mbit/sec.

 certainly, for the jz4775 CPU Card (which i am sending off very
shortly), it *DEFINITELY* has USB 2.0 for the 1st port and *ONLY* USB
1.1 for the 2nd.

 and i am certainly not going to increase the cost of the jz4775 CPU
Card by an extra $2 worth of components to put in a USB2 Hub when the
SOC itself is only $2.50!!!

l.



More information about the arm-netbook mailing list