Star Micronics NP-IO manual Ascii

Page 28

22

-the “control” key and one other. The other key determines what code is sent - pressing the control (CTRL) key and A sends ASCII code 1, CTRL B sends ASCII code 2, and so on. Your printer has a lot of control codes to let you do some useful things. Let’s try one that we’ve mentioned several times

already:

'Demo of ASCII code :i LPRINT CJlR$(7)

30 END RUN

That’s the printer’s bell (we call it that even though it sounds like a buzzer). We’ll learn more about it in later - we just wanted to show you a control code that would get your attention right away!

There are four common ways of referring to a control code: the name of the code or its abbreviation, the decimal ASCII value, the hexadecimal ASCII value, and the “CTRL-” value. For example, the ASCII code that causes the printer to advance the paper one line is decimal 10. This code may be referred to by any of the following:

line feed

-

the

name

of the

code

 

(LF>

 

-

its

abbreviation

 

 

ASCII

10

-

its

decimal value

 

 

ASCII

&HOA

-

its hexadecimal

value (the

&H

 

 

 

signifies

hex)

 

 

CHR$( 10)

-

the

way

it’s used

in BASIC

CTRL- J

-

the

way

you send it from

a keyboard

Of course, most of the time we don’t need to bother with these. The computer is smart enough to know that when we press the “A” key we want to print the letter “A” - it takes care of all the intermediate steps.

Appendix B is a table that shows the various names for each code so you can convert back and forth. The microcomputer world is not very consistent in describing ASCII codes, so it’s important that you have a basic knowledge of them.

Image 28
Contents NP-IO Self Declaration Table of Contents BIG Caring for Your Printer Functions of the Connector Signals Setting UP Your Printer Page Remove the protective tube from the carriage rail Page ‘.igure Memo Getting to Know Your Printer Pow\er cord Control panel Forward Selecting and Loading Paper Release lever To align paper that is not in straight Release lever Open the sprocket covers to expose the sprocket teeth Adjusting the Print Head Show you Printer When Want to Long Function Connecting the Printer Printing with Basic List Page Ascii Page Some Special Kinds of Text ESC Italic on Try this program to see them work Pica ESC P Elite Escm When you run this program you should get this Lprint Condensed CondensedON Here’s what you should get from this program Making Words Stand OUT Boldface on =49 Summary notes Formatting Text Line feed commands This is what you will get Run the program again. Now the results will look like this Set line spacing Inch Esco Set line snacing Lprint Line Number Form feed Lprint CHR$ ESC Top and bottom margin commands Function Control code Lprint this is LINE1 Next Page Try setting the margins with this program Here’s what you should get To begin Try this program to see how this works Lprint CHR$27xO 110 END Relative Horizontal Tab Lprint CHR$27BCHR$lOCHR$l5 Lprint CHR$25CHR$30CHR$o Lprint CHR$llFIFTH TAB CHR$n When you run this program the printout should look like this When you run this program, you should get like this Memo Special Features Printer Lprint CHR$7 Master rest Lprint Backspace does not Lprint CHRS27il Added Spaces This Lprint Next Lprint Lprint Eighth bit controls Next J Page Lprint CHR$27 Lprint CHR$27= Lieltil~l When you refer the Appendix C, you’ll find many characters When you run this program you should get like this Big character commands Function Lprint Double CHR$SO Lprint Testing Abcd ~~III.II I I,I~I~II L 1-t40 Memo Download Characters DOT Graphics Pins prints a row of dots Vertical 241 P r ESC 8~ CHR$O nl n2 m0 ml m2 m3 m4 m5 m6 m7 m8 m9 ml0 ml1 Page Lprint U.S. Exports Lprint Scales Designing Your OWN NLQ Characters Page Lprint Lprint CHEMICALSCHR$9 Lprint CHR$9i--I SCALE$=--+-I For I=2 to 8 Step Calculating Nl and n2 Umber of col- 1 Then nl is N2 is 11m2 More graphics commands Printer needs 2 bytes to fire all 9 pins in the g-pin