Olivetti JP101 Datasheet

Using the Olivetti

JP101 printer

Applicable

Hardware : Electron

BBC B

BBC B+

Master 128

Master Compact

Support Group

Acorn Computers Limited

Acorn House

Vision Park

Histon

Cambridge CB4 4AE

Application

Notes:

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.

16th January 1992

Support Group Application Note

Number: 002

Issue: 1

Author:

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.

16th June 1992Support Group Application Note No. 002, Issue 1

Support Group Application Note No. 002, Issue 1

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. 3

16th June 1992Support Group Application Note No. 002, Issue 1

Support Group Application Note No. 002, Issue 1

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.

16th June 1992Support Group Application Note No. 002, Issue 1

Support Group Application Note No. 002, Issue 1

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

16th June 1992Support Group Application Note No. 002, Issue 1

Support Group Application Note No. 002, Issue 1

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.

16th June 1992Support Group Application Note No. 002, Issue 1

Support Group Application Note No. 002, Issue 1

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