[E3-hacking] PBL & running arbitrary code
Fri, 11 Mar 2005 13:37:21 +0000
> Another possibility (that'll be a bit more convenient than JTAGging it
> each time) would be - if the /WE pin is wired on the board (which I
> suspect it is) - to reprogram the PBL rom in-situ after downloading a
> little JTAG loader. We could patch PBL to accept code over serial...
> Or if we're going to go this route, just replace it. So many options!
The 64KiB NOR flash has the ability to `blow' the first of its 8KiB
pages so it can never be altered. See its data sheet. I doubt this has
been done on the E2 because it would be inconvenient to the
> (I'm still hoping for some sort of buff. ovf. in PBL so we can keep it
> unmodified - so much safer, easier, less time consuming (in some
Agreed. Buy Emailer. Connect EXP port to computer with special cable.
Run program on PC. Have control of Emailer. No case opening,
soldering, or knowledge required would be nice.