This initial step is to drive a teletype with three test programs.  

Program 1:

The first a program that exercises the teletype with a series of 'R's and 'Y's..  The reason for this test is that the R and Y have opposite byte codes.  R is 01010 and Y is 10101.

Program 2:

The second program exercises the each letter and number by typing the following sentence:

"THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG'S BACK 1234567890 TIMES"

Program 3:

The third program accepts characters over the serial connection and types them out.  It tracks the number of characters and sends a <CR> and <LF> command before reaching the end of each line.

Next build will decode the teletype signals.  The grander vision is to combine this project with my telegraph project and have the arduino translate between the two devices.