DATAPROCESS ST 230 Bedienungsanleitung PDF herunterladen (Seite 10)

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ST 230

PROGRAMMING GUIDE PROGRAMMING GUIDE

PROGRAMMING GUIDE

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or from a macro stored on EPROM (or disk), through the /D command.

A specific command (/T) is also available to access characters mapped in RAM

fonts through standard ASCII codes, in case the external computer cannot handle

extended ASCII codes.

Some fonts (small, normal, big, symbols) contain a total of 256 characters each (128

mapped in EPROM and 128 in RAM). The “pictures” font contains only 20

characters (10 in EPROM and 10 in RAM), corresponding to the numeric ASCII

characters (codes 30 to 39 hex, 48 to 57 dec) and to the extended ASCII codes B0

to B9 hex (176 to 185 dec). The “magnum” and “mega” fonts contain only 128

characters, mapped in RAM, that can be accessed either through standard or

extended ASCII code.

Characters are drawn in the printable area (640 or 896 dots wide, depending on the

printhead used, and 2300 dots high) at the current cursor position, taking as a

reference point the lower left corner of upper case characters for the “small”,

“normal”, “big”, “magnum” and “mega” fonts, or the lower left corner of the matrix for

“symbols” and “pictures” fonts).

Character size, orientation and drawing mode depend on the current values of the

parameters controlled by the /F and /R commands.

If part of the character goes out of the printable area it is either truncated (top or

bottom) or wrapped around to the other side (left or right).

After drawing, the cursor is automatically moved in the appropriate direction

(according to the selected print orientation) of an amount determined by the the

“pitch” parameter, that has a default value for every font size and that can be altered

through the /X command.

Character spacing is the same for all characters in case of EPROM fonts (fixed

spacing), but it can be different for every character in case of RAM fonts (proportional

spacing) if the appropriate character width tables are loaded through the /D

command.

Note: see the description of the above mentioned commands and the section

dedicated to the font EPROM for additional details about fonts and their structure.

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DATAPROCESS ST 230 Bedienungsanleitung Seite 10