Re: [ECOS] redboot and MIPS malta board

[Jonathan Larmour <jifl at eCosCentric dot com>]

  Zhang wrote:
> Dear all, here is my problem:
>
> Firstly I am able to download the prebuild
> ECOSDIR/images/mips/malta/redboot_ROM.fl to my malta board, it worked,
> but just for a few minutes. Then I can't download it any more. It
> always gives me some wierd charactors, and all eight D28 LEDs are
> green.
>
> I tried to rebuild, ( using the import configure file
> .../misc/redboot_ROM.ecm, and srecconv.pl -ES L -A 29 to convert),
> still, I can't download the result redboot.fl, and all D28 LEDs are
> green again. (but no weird charactors this time)
>
> I remembered that I typed (SHIFT + 4) when redboot was working on my
> malta board. It is very strange that whenever I typed that, my malta
> board is dead and I have to reset it. After several times, the
> resetting is not working for me any more, and I even can't download any
> more.
>
> Anybody gives some hint about this?

Shift 4 is '$' and makes RedBoot switch into GDB debugging mode which as 
far as _you_ can tell well make it appear dead. You need to do a power 
cycle or full reset. Alternatively you can try typing:

++$k#6b
followed by return to ensure the line is flushed. That should resuscitate 
the redboot prompt.

Jifl
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