The screen shows the music staffs, and by movement of the cursor and command keys, notes are placed on the staff. It seems to make sense that students would learn about music by writing it and listening to their compositions being played. The student learns about music by actively engaging in the process of organizing sound. It seems reasonable that such an approach would increase the motivation to learn how to play an instrument. The pressure is eased, however, by omitting any scoring in the program.
The animation is that of a circle traveling in sine wave moving downward. The BBS is open to the general public and offers not only items of local interest, but items useful to all CoCo users. A special invitation is extended to those who may have an interest in using the CoCo in amateur radio or digital communications. The real world, however, deals in ever changing states.
Lines 70-100 print out the chart of quotation marks and their symbols. Sample the joysticks and store the values in the fol- lowing locations: $01 5 A — up /down value of left joystick; S0I5B- left /right value of left joystick; S015C — up /down value of right joystick; S015D — left/ right value of right joystick. When the unknown voltage is stable and not changing, the computer can take all the time in the world to figure out what the voltage is. Tandy, of course, does not guarantee it will leave ROM routines alone in new versions of basic.