Cheap big-endian board

[Mathew Benson]

I have never used RTEMS, but would like to prototype some ideas for
using RTEMS on the job.  I have no budget for a demo or prototype, so
I'm looking for cheap development boards.  Can somebody recommend
cheap dev boards with the following criteria:

- RTEMS BSP available or easy to tailor or create one
- Big endian CPU (I'm porting code from an already existing big endian
project and don't want to byte swap)
- Inexpensive (preferably in the same price range as Beagleboard or Gumstix)
- Equivalent processing speed to a 400 MHz Pentium II or better
- Preferably no less than 128 MB of RAM
- Ethernet
- Programmable via USB, serial, or ethernet

I've been going through the platforms listed on the BSP wiki page but
haven't found a good one yet.  I understand both Beagleboard and
Gumstix are bi-endian, but all the toolchains I find are setup for
little endian.  Ideally, I would love to use the Gumstix.  Can that be
setup big endian easily?