MAJIC monitors the target system's operating voltage via one of the pins
on debug connector in order to adjust the voltage level that it drives
on the JTAG interface. The best pin for this purpose depends on your
target design, so it must be selected via a debugger option: Ice_Power_Sense.
If this option is turned off (which is the default), then MAJIC
disables its power monitor and target interface.
Normally the Ice_Power_Sense option is set in the startice.cmd startup file.
The most common reasons for not sensing target power is if this option
is not being set correctly, or the debugger is not finding the right
startice.cmd file.
If the Ice_Power_Sense option is set as expected, but the
connect LED is red, then the JTAG cable may not be connected
correctly, or the selected signal may not be pulled
up to the I/O voltage.
