Epson FX-80 Specifications download pdf (Page 151)

Each pass of the print head contains one piece of the total pattern,

which can be as tall or short as you desire. You don’t have to use the

whole page or even an entire line for your graphics figures. In fact,

you can reserve as little or as much space as you like for a figure-and

position it anywhere on the page.

Graphics Mode

Multi-line figures are printed in lines that are either seven or eight

rows tall. For each graphics figure, you must first enter one of the

seven versions of Graphics Mode and then tell the printer the number

of columns you wish to print on each line. In other words, you specify

the density of the dots.

Here is the format for entering Single-Density Graphics Mode (60

dots per inch).

LPRINT CHR$(27)"K"CHR$(n

)CHR$(n

);

The two number slots (n, and n

) determine the number of columns

reserved for graphics.

Why two numbers instead of one? To get around a limitation of the

BASIC CHR$ function, which with only one reservation slot would

not let you print a figure across the entire width of the page. An 8-inch

page can hold up to

480

Single-Density graphics dots per row. But

since the BASIC CHR$ function is limited to numbers from 0 to

255,

you can’t send a number as large as 480 directly to the printer.

That’s where the second number slot fits in. You use the two sets of

numbers together to send large numbers to the printer. The first num-

ber that you specify (n1) indicates a number of columns

(0-255),

you’d expect. A

255

in that position says “reserve

255

columns for

graphics,” which means that any Single-Density figure less than half a

page wide can be handled easily by the first number alone. Although

you may sometimes need only this first slot for specifying width, you

must not stop with that specification. You must still satisfy the printer,

which always expects a value for the second slot (n

). Send it a

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Epson FX-80 Specifications Page 151

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