[E3-hacking] previous amstrad emailer

[David Given]

On Wed, 2005-04-06 at 00:03 +0100, Jonathan McDowell wrote:
[...]
> Meh. And now I've managed it and overwritten the kernel so it no longer
> boots. :/

If you're lucky, you've just overwritten the NAND flash, aka the
filesystem, and PBL's intact. If you're unlucky, you've overwritten PBL.

In case 1, all you have to do is to use PBL to write a bootable image to
the flash filesystem; PBL ought to be able to dial up and get a clean
image from Amserve. You can tell if PBL's okay because the lights on the
screen will flash manically as it scans the flash.

In case 2... er. I think you'll need a JTAG cable to rewrite PBL. I
don't know how you'd do that, though, and it does require a soldering
iron.

(Incidentally, I'm still working on my E2, or rather working on the boot
loader/mini OS that I'm going to put on it. I've been sorting out
filesystem code. Whee. Does anyone know if such a thing as a small,
portable USB stack exists?)

-- 
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