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Olivetti JP101, Using Instruction, Page: 6 / 6

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Olivetti JP101 Using Instruction Download Page 6

19) Carriage Return

      VDU1, 13

Performs a single line feed

20) Audible Alarm

      VDU1, 7

Activates audible  alarm lasting about 300msec.

21) Clear Printer Buffer

      VDU1, 127

Clears print buffer and resets print head. Does not affect tab programs etc.

22) Plotter Programming

Although it is possible to program graphics dump routines in BASIC the result would be very slow due to
the large amount of information that must be processed.  Any routine of this type should therefore be
written in machine code.  Such a "Printer Dump Routine" is available from Acorn for the JP101.

6

16th June 1992

Support Group Application Note No. 002, Issue 1

Support Group Application Note No. 002, Issue 1

Summary of Contents for JP101

Page 1: ...true and correct at the time of printing However the products described in this leaflet are subject to continuous development and improvements and Acorn Computers Limited reserves the right to change its specifications at any time Acorn Computers Limited cannot accept liability for any loss or damage arising from the use of any information or particulars in this leaflet ACORN ECONET and ARCHIMEDES...

Page 2: ...mmand sequence rather than as characters to be printed they are preceded by an ESC character This has the ASCII code number 27 so to send the ESC character to the printer only we use the command VDU1 27 VDU commands may be strung together so we may send sequences of characters more easily For example to tell the printer that we wish it to print any further characters we send it as double width cha...

Page 3: ...orizontally The default value on power up or general reset is 10 cpi 8 Vertical Line Spacing VDU1 27 1 69 6 lines per inch VDU1 27 1 70 8 lines per inch These commands set the number of line feeds per inch to the chosen value 9 Variable Vertical Line Spacing VDU1 27 1 38 1 n Sets line spacing to a value between 1 12 inch and 9 12 inch in increments of 1 12 inch The value n is 48 the number of incr...

Page 4: ... the use of this command to print numbers 0 to 100 in a field width of 60 characters at tab stops of 0 10 15 40 47 characters 10 0 Turn off screen formatting 20 VDU2 Turn on output to printer 30 VDU1 27 1 80 Tell printer horizontal tabulation program starts here 40 PRINT 60 10 15 40 47 Send format information line width followed by positions of tab stops 50 VDU1 27 1 90 Tell printer horizontal tab...

Page 5: ...tab code then performs paper skip to next vertical tab stop as defined by a Vertical Tabulation Program If there is no vertical tab stop defined then the printer performs one line feed 16 Paper Skip VDU1 12 Performs paper feed to first print line of next page 17 Relative Vertical Form Skip VDU1 27 1 73 1 i l j l k where i 48 x j 48 y k 48 z Performs a paper skip of xyz line feeds where xyz is less...

Page 6: ... etc 22 Plotter Programming Although it is possible to program graphics dump routines in BASIC the result would be very slow due to the large amount of information that must be processed Any routine of this type should therefore be written in machine code Such a Printer Dump Routine is available from Acorn for the JP101 6 16th June 1992 Support Group Application Note No 002 Issue 1 Support Group A...

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