Before Proceeding With This Chapter
Before working the examples in the remainder of this guide, you should be familiar with the basic programming skills covered in the first three chapters. If you have difficulty with an example, refer to those chapters for instructions.
Assumptions
From this point forward, you should know how to activate and exit the learn mode, clear program memory, display the program counter, enter uppercase and lowercase messages, and run a program stored in program memory.Format for Program Examples
Up to now, program examples have been presented in a format that shows each keystroke required to enter a program. In remaining chapters:- Examples show only the mnemonic form of a program instruction. For example, PAU represents the key sequence [ 2nd ] [ PAUSE ]. If you don't recognize a mnemonic, refer to Appendix C for a complete list of instruction mnemonics.
- Alpha messages are shown in single quotes. You must remember to activate and exit the alpha mode to enter these messages. Alpha key sequences, where shown, assume that your keyboard is not in lowercase lock (LC indicator not visible in the display).
- Functionality related instructions are grouped together. The instructions are not necessarily grouped as they would be in a printed listing.
For example, the last program in Chapter 3 is shown below in mnemonic form.
PC = | Program Mnemonic | Comments |
|---|---|---|
| 0000 | `ENTER RADIUS` | Creates message |
| 0012 | BRK | Waits for radius |
| 0013 | y^x 3 * PI * 4/3 = | Calculates volume |
| 0022 | `VOL =` | Creates message |
| 0026 | COL 16 MRG = | Positions cursor and merges |
| 0030 | HLT | Stops program |
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