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1  General Category / General Discussion / Re: Round #1 - Your feedback required. New SheevaPlug concepts. on: October 03, 2010, 03:19:24 AM
My plug application is not so hungry for processing power. Price and power efficiency are more important.
I would sort the points from higher to lower as follows:

9- Must be below $100
8- Must have the best power efficiency
4- Must be quite and doesn't include any moving parts
7- Must have the smallest footprint possible.
6- Must have the highest processing power available (vs. lowest price/performance).
3- Must be packaged within an enclosure (vs.  bare-bones)

Personally I would go for a DC power input (maybe with optional AC/DC  plugONplug) to reduce the overheat issue.
Having PLC capabilities and a digital audio interface (or combination of both) would be a nice upgrade for the device.
2  Hardware and U-Boot firmware / Hardware / Re: 88F6181 Bootrom on: June 21, 2009, 01:51:39 AM
Try using the attached binary files for this.

The same flow is used for both "Boot from UART" and "Debug prompt". The flow should be as follows:
- Hold the board in reset.
- Start sending the appropriate file (either debug or boot) as plain binary (no Xmodem or any other protocol)
- Immediately release the reset (so as to execute the BootROM while the pattern is still being transmitted).
- Wait for BootROM prompt (if debug file used) or for NACK signals (if boot file used) and if you terminal shows these NACKs.
- If you are doing boot. Start sending the UBoot with Xmodem.

I suggest to start with the debug prompt first, since you have a visual indication.
I am using the attached files and I can successful do both debug and boot. It is a matter of timing...
If you don't succeed in this try to enlarge the size of the pattern file, this will enhance the BootROM chance to catch the pattern...

I hope this helps.
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