Check this out.
From the Default Program:
' Bit 7 of the PB_mode byte (aliased as comp_mode below) indicates the status
' of the Competition Control, either Enabled or Disabled. This indicates the
' starting and stopping of rounds at the competitions.
' Comp_mode is indicated by a solid "Disabled" LED on the Operator Interface.
' Comp_mode = 1 for Enabled, 0 for Disabled.
From the Programming Reference Guide:
Bit 7 of the PB_mode byte (aliased as comp_mode below) indicates the status of the Competition
Control, either Enabled or Disabled. This indicates the starting and stopping of rounds at the
competitions. Comp_mode is indicated by a solid "Disabled" LED on the Operator Interface.
Comp_mode = 1 for Enabled, 0 for Disabled.
Now, to the best of my knowledge, IFI created the programming guide for this year's controller. So one would think that it's correct. It also is exactly the same as the comments in the code, and if you look at how it claims the LEDs will behave, they do exactly that. All that remains to be tested is whether or not the bit actually changes... I suspect it does.
I have a vague memory of another bit that was aliased as disabled_mode or something similar from years ago. Maybe it was just our programming coach changing the name. Now that I'm the programming coach, everything has new names

None of this PWM1 garbage... it's LeftFrontDrive.