GPi test set up notes

Now I am pretty sure that GPi #2 is not working properly.  I can download the led driver core, but the CPLD's clock pin seems to be overloading the RPi clock from 3V3 to 2V0, and sometimes hangs up the clock.  It is likely that I used 5V logic external clock for the GPi and damgaged the CPLD.  Since the thing actually intermittantly works OK, and I once suspected that the device warms up and malfunctions.

Now I am placing 3 GPi's side by side for easier mix and match troubleshooting.  The 3 RPi's and standing by on top, and only RPi #3 is used to test the 3 GPi's.  All the RPi's have 3 cables for interfacing to the GPi's - JTAG, SPI, and PWM/CLK0.

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