
Description
~~~~~~~~~~~
CommProbe is a small demo that allows setting the individual pins of a GBA's communiction port high/low or reading them as inputs and displaying the results on the screen.

The value of the R_RCNT register is displayed (in hex) at the top of the screen.

Usage
~~~~~
The keys used were chosen to match the layout of the corresponding indicators on screen.

Keys:
	L	Switch to OUTPUT mode - pin display indicates what is being output on the hardware pin
	R	Switch to INPUT mode - pin display indicates the percieved logic level on that pin
	
	<	Toggle SC pin
	>	Toggle SD pin
	B	Toggle SI pin
	A	Toggle SO pin