[ECOS] redboot and MIPS malta board

[Jonathan Larmour]

   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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