Special version for Trasmitter for the 7150 12kHz only SOA 12x12 system

stx7150_SOA12x12_0502.bin

Revision register should read 0502

11/14/08 - Rev0502:
modify weight decode so that SW can still send shading to usual 12kHz board addresses

11/11/08 - Rev 0501
This is for the rev ("C"?) of the board that 
uses Single Ended LVCMOS FPGA outputs for the FET switches

The board addresses are decoded so that the 12 12kHz boards 
when plugged into the 12 24kHz slots in a "standard" system,
should respond correctly, as a 12kHz system.

This has tx fault circuits and the fault led's implemented.

This is based on the released 7150 code for all modules excpect 
the pulsewidth modulation module (ifpwm.v) which is based the 
version done by Zeuxion and has the DC balance, and precharge fix.

There are slight differences in the steering calculation in order to 
accomodate for the pivot point correctly
