Sendstr is a demo program.
Sendstr writes a bloc of data to a MCXPCI COM PORT (set in Asynchronous or synchronous mode)


The syntax is :
	sendstr COMx frame
	or
	sendstr -x COMx hexframe

where	COMx is the name of the COM PORT (See mcxsetup program)
	Frame is the ASCII string to send
		e.g. FrameContents
	Hexframe is the string to send, in hexadecimal notation
		e.g. 4672616d65436f6e74656e7473
