Star Micronics NB-15 user manual Special Features Printer

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CHAPTER 7

SPECIAL FEATURES OF

THE PRINTER

Subjects we’ll cover in Chapter 7 include-

*Printer’s bell; • Master reset;

• Uni-directional printing;

• International character sets; • Printing BIG characters;

• The optional sheet feeder; • Reading a hex dump.

In the previous chapters we have learned about several groups of control codes. In this chapter we will look at more con- trol codes. These codes don’t fit neatly into any of the groupings that we have studied, but they add a lot of capability to your printer. So here goes.

nNow hear this

You may have heard the printer’s bell if you have ever run out of paper. And you may have wondered why it’s called a bell when it beeps instead of ringing! It’s a long story that goes back to the early days of computers, when teletype machines were us- ed for computer terminals. These mechanical marvels had a bell in them that could be heard for blocks. This bell was used to signal the operator that somethings needed attention. The code that the computer sent to the teletype machine to ring the bell was, reasonably enough, called a bell code. Well the name bell code is still with us, even if the bell has changed to a beeper, and a lot of people still call the beeper a bell, even if it doesn’t sound like one. So with our trivia lesson out of the way, let’s see how we can ‘“ring the bell”.

The code to sound the “bell” is CHR$(7), which is ASCII code

7 or (BEL). Any time your printer receives this code it will sound the bell for a quarter of a second. This can be used to re-

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Contents USER’S MANUAli Tatement Special Message to the New Owner Table of Contents CHR$ Chapter Controlling with BasicChapter Special Features of the Printer Functions of the Connector Signals TRS-80 Basic Appendix G Serial Interface SpecificationsSetting UP Your Printer Page Tion and movement for both removing and replacing the cover Page Print head Printer Slide the I/F board into the slot Page Getting to Know Your Printer Page Page Page Selecting and Loading Paper ‘igure 2-4. Raise the paper guide for loading single sheets You can insert a sheet of paper by using the release lever To align paper that is not in straight Sprocket cover You can raise While trrnirrgon the power Self-test DIP switch 2-2 on Efgh!jklmnopqr¶tuvwxyz~ ?lSS&‘ TOF During normal operation Connecting the Printer Page Memo Using Commercial Software Page Ascii Using Your Printer with Word Processors Page Memo Controlling With Basic List PR#ONEW Lprint Testing RUN ESC W Lprint CHR$27WCHR$l Lprint CHR$27WCHR$49 Lprint CHRS27Wl Memo Printing Text Lprint CHR$27 xl ESC OFF ESC Lprint UndelinedLprint Overlined Boldface on Escso When you run this program you should get this Demonstration Condensed Here’s what you should get from this program OFF Elite mint Summary notes Memo Formatting Text This is what you will get This Line Spacing is SET to Run the program again. Now the results will look like this Here is what your printer will produce Lprint CHRS12 Line NumberIOI ESCNCHR$n Lprint this is LINE1 Next This is Line Return TWO Three Four ONE This command sets the horizontal tab to every eight columns Next Try thisprogram tosee how this works Lprint CHR$11 First TAB Lprint CHR$llFIFTH TAB CHR$O Lprint 2ND TAB of CHANNEL’ Memo Special Features Printer Lprint CHR$7 ESCVCHR$O Here is what this program will print Lprint CHR$27il Printing direction commands Function Control code Next Lprint Lprint Eighth bit controls Next J 129 LPRINTCHR$27 LPRINTCHR$27= Lprintlprint Double This is Double Sized Printing Lprint CHR$I Next LprintPage Creating Your OWN Characters Print Matrix Defining Your OWN Characters Usethisgridoronesimilartoittodefineyourown draftcharacters Wrong 128 Assigningavalueofcharacterspace Characterdesignsforthetwographsymbols Page Read MM LPRINTCHR$MM Next M Next N Lprint LPRINTCHR$I Next Lprint CHR$I Next LprintLprint LPRINTGERMANYCHR$9 Lprintscales Read MM Lprint CHR$MM Next M Data 1, 9, 2, 31,253,64, 32, 1,128,80MO+ml +m2 105 106