******************************* Revision History ************************************
*
* V3-00         20/8/2007 Initial release. Has all the features of CC18 version 3.23
*
* V3-10		18/7/2012 New Xwire driver which allows TTL/RS485 to be selected by the
* 		user application using the new "XwirePhys" instruction. New boot loader
*		integrated into the firmware which runs the CPU at 18.432 MHz, 18.5%
*		faster. This requires the internal clock to be set to 252 KHz during 
*		calibration.
*
* V3-11         13/5/2013 Added ability to be able to force the board to power up in 
*               the boot loader mode by pressing and holding down push button 1 and 3
*               at power up. Latest minor bug fixes and improvements also added.
*
* V3-12		13/6/2014 Added the ability for user programs to generate custom characters
*		on the LCD.
*
* V3-13         11/3/2015 Added BlinkM, InputM and InputKM instruction. Added COM_Flags 
*               instruction to user string comms. Fix to overcome a problem in SPLatPC 
*               which prevented the user from swapping back to SPLatLink comms successfully.
*               The #Serial command was changing the UART profile to a profile with even 
*               parity when SPLatlink comms was selected.
*
* V3-14 	7/11/2020 Added PWM controlled LCD contrast, plus latest minor bug fixes and 
*		improvements also added. LCD contrast is settable by analogue output channel 
*		A(0) and can be stored by using: SpxCmd0, Cmd=2. Analogue output is not 
*		available to SPLatPC in order to maintain compatibility with previous firmwares.
*		This version of firmware is compatible with any UI2x16 board with an AC60 processor.