Whilst doing some debug on an FPGA Balloon 3 board I've finally got
round to making a diagram of the various power rails, where to find them
and what voltages to expect.

It's based on the E1 build of boards but does not differ noticeably from
the P1/P2 builds.

The document is linked from the Balloon 3 hardware page or directly at
http://www.balloonboard.org/hardware/300/balloon_3_power_rails_fpga.pdf

Chris
-- 
Chris Jones - chris@martin-jones.com
Martin-Jones Technology Ltd, makers of Solidlights
148 Catharine Street, Cambridge, CB1 3AR, UK
Phone +44 (0) 1223 655611 Fax +44 (0) 870 112 3908
http://www.solidlights.co.uk/