Epson FX-80 Specifications download pdf (Page 106)

either of these capabilites on and off, as a mode, with an ESCape

sequence.

Half-Speed Mode

The FX can print at the fine rate of 160 characters per second (cps).

But it will also print more slowly if you want it to: the Half-Speed

Mode prints at

cps. The command sequence uses lowercase s plus

zero and one as a toggle:

LPRINT CHR$(27)"sl"

turns Half Speed Mode on, and, as usual, the zero version of the

command turns the mode off. If your system can’t send lowercase

letters, use the longer format:

LPRINT CHR$(27)CHR$(l15)CHR$(l)

to get the same results.

The FX uses Half-Speed, as we explained in Chapter

to enable

extra-dense printing. But why would you want to make the printer

work at half its normal speed? The main advantage to Half-Speed

printing is a quieter run (e.g., for those late night printing sessions).

Immediate-Print Mode (FX-80 only)

The FX-80 can move even more slowly-at the speed of your typ-

ing. In the Immediate-Print Mode, the print head prints one character

at a time, as you send it. The FX-80 also moves the paper up so that

you can see the current line and then down to continue printing. This

kind of instant feedback can be especially helpful in telecommunica-

tions.

You turn Immediate Print on with

CHR$(27)“il”

or, to avoid the

lowercase i, CHR$(27)CHR$(105)"1". But before looking at it, let’s

review the normal operation of the printer buffer. Enter this program:

NEW

A$=“”:

INPUT "TYPE A LETTER ",A$

IF A$="" THEN 50

40 LPRINT A$;: GOT0 20

50 LPRINT

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. To end this version of the program

1 2 ... 101 102 103 104 105 106 107 108 109 110 111 ... 267 268

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Epson FX-80 Specifications Page 106