morse training with the Junior Computer

Here is yet another small program to be added to the large amount of soft- ware already available for the Junior Computer. It is intended to teach pro- spective short wave listeners to read morse code. The program can be used even with the basic version of the JC. The only additional hardware is the amplifier stage shown in the accom- panying figure. The input to this is taken from port line PB5. The number and speed of the morse characters can be predetermined. After the program has started, the JC will generate 1 to 6 morse characters, which the trainee should decode and write down. The letters corresponding to the generated characters appear on the display after a short delay, so that the trainee can check his decoding with the actual text. During this phase, the computer is on stand by until an arbitrary key, other than ST and RST, is pressed. The hex dump given is sufficient to write the program into the JC. Once that has been done, you can prepare the start, but the program ...