Re: custom mpc8240 student project (long)

In message [off-list ref] you wrote:

I understand what you're saying about the COP so I need to evaluate my
options.  We are all students working on this so I don't think my coleauges
will spring for the BDI since we don't have one available to us at the
University.  Is the BDI1000/2000 the least expensive way to use the JTAG/COP?

In terms of time AND money AND power: definitely.

An alternate idea:  What if I jumper in a 32 pin PDIP 8-bit EEPROM somewhere
that I can boot from (RCS0/8-bit).  I can pull this part off of the board and
throw it in a programmer we have at the university.  Hopefully I'll be able
to program it with something that will "simply" program itself onto the TSOP
AMD flash (which would then be jumpered to (32-bit/RCS1).  Remove the jumpers
and reset the board and maybe I would have a ROM that can downlaod stuff
through the UART.  Not the quickest of development cycles but it is a no-cost
solution.

OK, now you can program your boot device. You plug it in,  power  on,
and you are lucky: no magic smoke to be seen.

But your code doesn't run (and I guarantee you that it will  not  run
on first attempt).

I bet you'd like to have a debugger then...

Or: Leave the EEPROM on RCS0 all the time.  The AMD Flash on RCS1 all the
time and find another place to put the UART.  Suggestions?

Yes, two: find some working hardware which already has  the  firmware
running, or get yourself the neccesary tools.

Wolfgang Denk

--
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd@denx.de
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