Voltage Testing of XO-1.75

This procedure is for verifying firmware startup at different core voltages.

It assumes that the board is hardware-configured to start at a core voltage of 1.4V.

Test booting at 1.4V by powering on the board in the normal way.

To test booting at 1.345V :

• Attach a serial port to the XO-1.75.
• Get into CForth by holding down the rotate key and powering on.

 ok b gpio-set
 ok ofw

It should boot normally.