Star Micronics SJ-48 manual Download Character Commands, Define 24-dot download characters

DOWNLOAD CHARACTER COMMANDS

Define 24-dot download characters

				27 38	0	nl	IB 26	00	nl
Std.	n2	mO ml	m2	n2 mOml m2			n2 mOml m2
	dl	d2	al	dl	d2	dx	dl	d2	.,. &

Clears the 48-dot download characters and defines one or more new 24-dot characters and stores them in RAM for later use. DIP switch 2 must be set to OFF; otherwise RAM is used as an input buffer, not downloading characters, and this command is ignored.

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

The data for each character start with three bytes specifying proportional spacing attributes: the first byte, mO,specifies the left of the character; the second byte, ml, specifies the character width; the third byte, m2, specifies the right of the character. These values must not exceed the following maximum limits:

Character mode	ml	mO+ml +m2
Pica	31	36
Elite	27	30
Semi-condensed	19	24
Proportional	37	42
Super/Subscript	19	36
Prop. superlsubscript	37	42

Next comes the dot data. Normal character height is 24 dots, so there must be 3 x ml bytes of dot data. If the printer is in super/subscript mode, however, the character height is 16 dots, so there must be 2 x ml bytes of dot data.

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 7.

Chapter6 PRINTER CONTROL COMMANDS 61