Getting Started With Delta | 25 |
Welcome back. Let’s try what we learned. Type the following:
L
NEW
i
18 LPRINT "TESTING"
RUN
celse!
At any rate, you should have the word “TESTING” on your
iprinter. Quite an achievement, isn’t it? Let’s get done with this simple stuff so that we can go on to something interesting.
iThe CHR$ function
L | We mentioned CHR$ earlier as one way to express ASCII | |
codes. We are going to use it a lot in communicating with Delta. | ||
| ||
L | Delta uses many of the ASCII codes that don’t represent letters | |
and numbers. The CHR$ function gives us an easy way to send | ||
| ||
| these codes to the printer. Try this to see how the CHR$ function |
Lworks:
NEW
i18 LPRINTCHR$(68)
RUN
That should print a “D” for Delta. If you check the chart in I, .- Appendix I you will see that 68 is the ASCII code for “D”.
L Control codes
Delta uses many of the
icodes. These codes perform a function rather than printing a char- acter. Let’s try an easy one right now:
L
6 NEW
18LPRINTCHR$(7)
RUN
:
L
Who made that noise? That’s Delta’s bell. We will learn more