Star Micronics XR-1520, XR-1020 Define draft download characters, Download Character Commands

DOWNLOAD CHARACTER COMMANDS

Define draft download characters

Mode	ASCII				Decimal		Hexadecimal
	&SC>	“gt”	x0>	nl	2730	Od	10 26 00 nl
Std.	n2	m0	ml	m2	n2mOmlm2		n2mOmlm2
			m3	... ml1		m3 ... ml1	m3 .. . ml1

Defines one or more new draft characters and stores them in RAM for later use, Memory Switch must be set to “DOWNLOAD”; other- wise RAM is used as an input buffer, not for downloading charac- ters, and this command is ignored. Draft mode must be selected before this command is executed.

nZ is the character code of the first character defined and n2 is the character code of the last character defined. nZ must be equal to or less than n2.

Each character is defined by an attribute byte (m0) and 11 data bytes (mZ,m2,...mZZ).

The most significant bit of the attribute byte is 0 if the character is an ascender (positioned entirely above the baseline) or 1 if it is a descender (descending below the baseline). The attribute byte also indicates the amount of white space to the left of the character (0 to 7 dots, specified by bits 4 to 6), and the width of the character cell, including this space (4 to 15 dots, specified by bits 0 to 3). The left space and cell width attributes areused only in proportional spacing. Each data byte indicates eight vertical dots, with the most significant bit being the top dot, and the least significant bit being the bottom dot.

For further details, please refer to chapter 8.

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