Parallel Port Black Box Tester			    Author: Tom Corson				JavaSoftBlack Box is a Java(TM) application for monitoring and testing parallelports.It's usage is:Usage: java -native ParallelBlackBox [-h] | [-f] [-l] [-n] [-d receive_delay] [-p ports]Where:	-h	this usage message	-f      "Friendly" mode.  Relinquish control of the port (close it)		 if another requestor attempts an open.	-n 	do not use receiver threads.  Slows the receive processing 		down by using the same thread for the transmitter as		well as the receiver.  Useful for checking flow		control.	-d	sleep for receive_delay msecs after each read.  Delays 		the receive processing. 	-l	run as a line monitor.  The output stream for each port 		is interchanged with the output stream of the other		port.  This means that what is received on port A is		resent on port B and vice versa.  On a system with at		least 2 parallel ports, this allows you to connect the		system to a device being tested and observe all data		sent and received as well as control signal		transitions, etc.  This setting allows the tool to be		used as a line monitor.	-p	open only the ports specified (separated by spaces).  If 		not specified, all ports will be opened.		Note: This must be the last argument given.When BlackBox starts, it opens the specified parallel ports (or all, bydefault) on the machine from which it is run and displays aninformation panel for each.  The information shown consists of:The name of the port.	The label color reflects the state of the port as follows:		Green  - port is open		Yellow - port is in use but awaiting an open when the			 port becomes available		Red    - port is closed	Note: Clicking on the port name toggles the port from open to	      closed.A control for:	Mode	Manipulating it changes the port mode to the indicated	value.A set of indicators for:	SEL	Printer Selected	BSY	Printer Busy	TO	Timed Out	PE	Printer Error	PO	Paper Out	BE	Output Buffer EmptyA text area for transmitting data, a display of the buffer size in use,along with a count of the number of bytes sent and the actual(calculated) baud rate.  There are 2 check boxes above the transmit text area:  	Selecting "Auto Transmit" causes a test pattern to be	continuously transmitted.Note: Clicking on the "Bytes Transmitted" label resets the counter to 0.      Clicking on the "Baud Rate" label resets it to 0.      Clicking on the "Buffer Size" label resets the buffer size to the      default value.A text area for receiving data, a display of the buffer size in use,along with a count of the number of bytes received and the actual(calculated) baud rate.There are 3 text fields above the receive text area:  	Entering a value for "Timeout" causes the receive timeout to be	set to that many milliseconds.	Entering a value for "Threshold" causes the receive threshold	to be set to that many bytes.	Entering a value for "Framing" causes the receive framing byte	to be set to that hexadecimal value.Note: Clicking on the "Bytes Received" label resets the counter to 0.      Clicking on the "Baud Rate" label resets it to 0.      Clicking on the "Buffer Size" label resets the buffer size to the      default value.      Clicking on the "Timeout" label resets the receive timeout to the      default value.      Clicking on the "Threshold" label resets the receive threshold to      the default value.      Clicking on the "Framing" label resets the receive framing byte      to the default value.Note: Any nonprintable characters received will be shown as multi-bytesymbols, eg, "^C".READMEVersion: 1.1Last Modified: 06/02/98