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- 16th January 1993
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- Support Group Application Note
- Number: 002
- Issue: 1
- Author:
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-
- Using the Olivetti JP101 Printer
-
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- Applicable Hardware: Electron
- BBC B
- BBC B+
- BBC Master 128
- Master Compact
-
- Related Application Notes:
-
-
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- Copyright (C) Acorn Computers Limited 1992
-
- Every effort has been made to ensure that the information in this leaflet is
- 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 are trademarks of Acorn Computers
- Limited.
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- Support Group
- Acorn Computers Limited
- Fulbourn Road
- Cherry Hinton
- Cambridge
- CB1 4JN
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-
- Using the Acorn JP101 Spark Jet Printer
-
- Apart from being a remarkably quiet and fast home computer printer, the
- JP101 Spark Jet Printer has many special features which are simple to use
- and can improve the presentation of your printouts. Among these features are
- nine different national character sets, double width printing, double height
- printing, and horizontal and vertical tabulation functions.
-
- The printer may be controlled from either a program or from the keyboard
- using VDU commands, or by typing control characters on the keyboard. For
- example, we can turn the printer on or off from the keyboard or from a BASIC
- program by typing VDU or VDU3. This may also be done from the keyboard by
- typing CTRL-B or CTRL-C, which is easier to type!!
-
- When we wish the printer to perform a more complicated task, such as
- printing characters double width, or automatically tabulating data as it
- prints it out, then a sequence of commands must be sent to the printer to
- tell it how it must print any future characters the computer sends it. We
- wish to send these characters to the printer only and this may be done using
- VDU1 which sends the next character to the printer only.
-
- In order that the printer should recognise characters sent to it by the
- computer as part of a command 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 characters, we must send it
- the sequence ESC 3. To do this we use VDU1,27,1,51. 51 is the ASCII code
- for the character 3.
-
- For more information about ASCII codes or VDU commands, see your computer's
- user guide. For more information about the operating commands of the JP101
- printer, see the printer manual chapter 6.
-
- Given below is a summary of the VDU commands you should use to obtain
- various effects on the JP101 printer. Note that before sending any VDU
- commands to the printer is possible, the printer must be enabled using a
- VDU2 (see example programs in 12) and 14) below).
-
- 1) Double Width Characters On
-
- VDU1, 27, 1, 51 This command turns double width printing on until it is turned off again.
-
-
- 2) Double Width Characters Off
-
- VDU1, 27, 1, 52 This command turns off double width printing.
-
-
- 3) Double Height Characters On
-
- VDU1, 27, 1, 39
-
- This command turns on double height printing. It may also be used in
- conjunction with 1) to obtain double height, double width characters.
-
-
- 4) Double Height Characters Off
-
- VDU1, 27, 1, 37 This command turns off double height printing.
-
-
- 5) Underlining
-
- VDU1, 27, 1, 42, 1, 48 (normal underlining)
- VDU1, 27, 1, 42, 1, 49 (double underlining)
- VDU1, 27, 1, 42, 1, 50 (dotted underlining)
-
- These commands turn on the appropriate style of underlining, which remains
- in operation until cancelled.
-
-
- 6) Underlining Off
-
- VDU1, 27, 1, 43 Turns underlining off.
-
-
- 7) Horizontal Character Spacing
-
- VDU1, 27, 1, 60 (10 characters per inch)
- VDU1, 27, 1, 61 (12 characters per inch)
- VDU1, 27, 1, 62 (18 characters per inch)
-
- These commands select the number of characters printed per inch
- horizontally. 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 increments). For example,
- if the desired line spacing was 5/12 inch, then n would be (48+5) = 53, and
- the complete command would be VDU1, 27, 1, 38, 1, 53.
-
-
- 10) General Reset
-
- VDU1, 27, 1, 48
-
- Clears the print buffer, the horizontal and vertical program settings, the
- pitch and line spacings, etc.
-
-
- 11) Alternative National Character Sets
-
- VDU1, 27, 1, 91, 1, 48, 1, 51, 1, 48 (German)
- VDU1, 27, 1, 91, 1, 48, 1, 52, 1, 48 (Spanish)
- VDU1, 27, 1, 91, 1, 48, 1, 53, 1, 48 (Danish)
- VDU1, 27, 1, 91, 1, 48, 1, 54, 1, 48 (French)
- VDU1, 27, 1, 91, 1, 48, 1, 55, 1, 48 (Italian)
- VDU1, 27, 1, 91, 1, 48, 1, 56, 1, 48 (Swedish/Finnish)
- VDU1, 27, 1, 91, 1, 48, 1, 57, 1, 48 (British)
- VDU1, 27, 1, 91, 1, 48, 1, 58, 1, 48 (USA-ASCII)
- VDU1, 27, 1, 91, 1, 48, 1, 59, 1, 48 (Norwegian)
-
- Selects one of the alternative national character sets. The default is that
- set on the DIP switches on the PCB. Details of the special characters are
- given in the printer manual on page 5.12.
-
-
- 12) Programmed Horizontal Tabulation
-
- VDU1, 27, 1, 80
- (Format Information)
- VDU1, 27, 1, 90
-
- This is a complicated command to use. The program below demonstrates 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 tabulation program
- stops here
- 60 Z=0
- 70 REPEAT
- 80 PRINT Z; For Z=0 to 100 print Z
- 90 VDU1, 9 Horizontal tab to next tab stop
- 100 Z=Z+1
- 110 UNTIL Z-101 120 VDU1, 12 Page eject
- 130 VDU3 Turn off output to printer
-
-
-
- 13) Horizontal Tab
-
- VDU1, 9
-
- Automatically inserts enough spaces as needed to reach the next horizontal
- tab stop as set by 12) above. If no Horizontal Tabulation Program is set
- then one space is inserted.
-
-
-
- 14) Programmed Vertical Tabulation
-
- VDU1, 27, 1, 81
- (format information)
- VDU1, 27, 1, 90
-
- This is the vertical version of 12) above. See 12) for more information.
- The following program demonstrates printing as programmed vertical tab
- stops.
-
- 10 @%=0
- 20 VDU2
- 30 VDU1, 27, 1, 81'
- 40 PRINT"60;10;15;40;47";
- 50 VDU1, 27, 1, 90
- 60 Z=0
- 70 REPEAT
- 80 PRINT Z;
- 90 VDU1, 11
- 100 Z=Z+1
- 110 UNTIL Z=6
- 120 VDU1, 12
- 130 VDU3
-
-
- 15) Vertical Tab
-
- VDU1,11
-
- Prints contents of buffer up to 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 than 255. For
- example to obtain 100 line feeds use VDU1, 27, 1, 73, 1, 49, 1, 28, 1, 48
-
-
- 18) Line Feed
-
- VDU1, 10 Performs a single line feed
-
-
-
- 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.
-