Star Micronics NB-15 user manual Esc W

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Where did that noise come from? That’s the printer’s bell. We will learn more about it in Chapter 5. We just wanted to il- lustrate a code that causes the printer to perform a function.

nThe escape codes

Back when the ASCII system was set up, computer equip- ment was relatively simple and thirty-three control codes were

considered sufficient at the time. The American Standards people realized that, eventually, more control codes would be needed so they included the escape (ESC) code to allow almost any number of additional codes to be defined when they became necessary.

ESC allows us to “escape” from the ordinary set of control codes so we can specify additional functions and other informa- tion needed for a printer function. In this manual, we’ll write the ESC code inside broken brackets, like this - (ESC).

(ESC) - decimal 27 - is always followed by at least one other number; it is never used alone. The whole series of related numbers is called an escape sequence.

nA note on command syntax

Because the readers of this manual will be running such a wide variety of applications on so many different computers, we just can’t show the exact way of sending codes to the printer for each one of them. Instead, as we introduce you to each new com- mand, we will show the commands as in this example:

(ESC) “W” 1

This command that turns on expanded printing. (ESC), as we mentioned earlier, is the escape code (which is ASCII code 27). A letter or number in quotes (such as the “W” above) means that the character should be sent to the printer (without the quotes). In our example, you should send a capital W following the escape code. In BASIC, you could do this in a couple of ways: by sending the character itself (e.g. LPRINT “W”;), or by using the CHR$ function to send the ASCII code for the character (e.g. LPRINT CHR$(87);).

Many of printer commands end with a 1 or 0. When shown as in the above example (i.e. no quotes and no “CHR$“), you can use either ASCII code 1 (i.e. CHR$(l)) or the character “1” (which is ASCII code 49). The same idea applies to commands

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Contents USER’S MANUAli Tatement Special Message to the New Owner Table of Contents Chapter Controlling with Basic CHR$Chapter Special Features of the Printer Functions of the Connector Signals Appendix G Serial Interface Specifications TRS-80 BasicSetting 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 PR#O ListNEW Lprint Testing RUN ESC W Lprint CHR$27WCHR$l Lprint CHR$27WCHR$49 Lprint CHRS27Wl Memo Printing Text Lprint CHR$27 xl ESC Lprint Overlined OFF ESCLprint Undelined Boldface on Escso When you run this program you should get this Demonstration Condensed Here’s what you should get from this program OFF Elite mint Summary notes Memo Formatting Text This is what you will get This Line Spacing is SET to Run the program again. Now the results will look like this Here is what your printer will produce Line Number Lprint CHRS12IOI ESCNCHR$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$27= Lprintlprint Double This is Double Sized Printing Next Lprint Lprint CHR$IPage 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 Lprint CHR$I NextLprint LPRINTGERMANYCHR$9 Lprintscales Data 1, 9, 2, 31,253,64, 32, 1,128,80 Read MM Lprint CHR$MM Next MMO+ml +m2 105 106
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