Star Micronics LC24-20 user manual Decimal Hexadecimal ESC = ~ #

Define download characters

Mode

IBM

ASCII				Decimal				Hexadecimal
<ESC> “=”	)?/	,,~ “#”		27 61	/t/	n2	35	IB 3D )?/ /12	23
/1.? /1’/	<()>		17S	f?.] M		o /L5		/?.7 }?4 00 ns
ml	~t~	,,,	m9	n?/	rd	.,, ?n9		ml rd	m9
(11	d2		d.1’	(/1		(I2	d.1”	[11 d2	d.1”

Defines new characters and stores them in RAM for later use. EDS switch A-3 must be set OFF; otherwise RAM is used as an input buffer, not downloading characters, and this command is ignored.

Downloading characters in IBM mode requires Dot Pattern data and Character Index Table data.

Dot Pattern data controls which pins fire when printing a character. Index Table data is placed in a “lookup table” that provides infor- mation on where Dot Pattern data is stored in memory and defines certain attributes of the character.

(nl + n2 x 256) give the number of bytes to be downloaded. }13and t74 indicate the low order and high order addresses in which data is to be stored.

n3 should be 15 and n4 should be 128 for this printer.

n5 determines the character mode to be downloaded, as shown below:

)75	Character mode	Character width
o	Draft	10
1	LQ pica	36

~LQ proportional 18-42

3 LQ elite 30

mf through n79 indicate Index Table data.

n7f and m2 indicate the addresswhere Dot Pattern is stored. ml is the high-order byte. n?3indicates the number of columns in the character memory, and m4 indicates the number of columns in the character less 1.

114