Star Micronics NB-15 user manual Here is what this program will print

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		76
	I	90 LPRINT CHR$(24);
	I	100 LPRINT "DOES NOT WORK"
		100 LPRINT "DOES NOT WORK"
		Here is what this program will print:
		BACKSPACE	DOES NM WORK
		DELETE DOES WORK
		DOES NOT	WORK

The backspace codes in line 30 move the printhead a total of three spaces to the left so that the first part of line 40 will over- print the word “NOT”. The delete codes in line 60 “erase” the three letters in the word “NOT” so that it doesn’t even print.

In line 90, CHR$(24) deletes the words in line 80. The semicolon at the end of line 80 prevents a line feed from causing that line to print before the printer receives the CHR$(24) code. The text in line 100 prints as it normally would because it is after CHR$(24).

nImmediate-print

This printer can print at fine rate of 250 characters per sec- ond. But it will also print more slowly at the speed of your typ- ing. In immediate-$rint mode, the printhead prints one character at a time, as you send it. This printer also moves the paper up so that you can see the current line and then down to continue printing.

You can turn immediate-print mode on with (ESC) “i” 1. But before looking at it, let’s review the normal operation of the print buffer. Enter this program.

20 A$="" :INPLJTw TYPE A CHARACTER ",A$ 30 IF A$="" THEN 50

40 LPRINT A$; : GOT0 20

50 LPRINT : LPRINT CHR$(27);"@"

Now type several characters, and after each press the RETURN key. True to form, the printer just stuffs the characters into its buffer while it waits for a carriage return code. (In this program the RETURN key doesn’t send a car-

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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$27 xl ESC OFF ESC Lprint UndelinedLprint Overlined Boldface on Escso When you run this program you should get this Demonstration Condensed Here’s what you should get from this program OFF Elite mint Summary notes Memo Formatting Text This is what you will get This Line Spacing is SET to Run the program again. Now the results will look like this Here is what your printer will produce Line Number Lprint CHRS12IOI ESCNCHR$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