Lexmark FORMS 249X Technical Reference page 123

Count
Font ID Byte
Start
Data
Bit Bit Values
1, 2, and
3 (Attribute
Byte 1)
1
7
6 0
1
5-0 The number of
character data dot
columns stored in
memory.
4 (Attribute
Byte 2)
0,0
Shading character.
7, 6
0,1
Line drawing
character.
1,0
Underscore
character.
1,1
Not supported.
5-0 For a 10 cpi Letter
Quality 36 column
character, bits 5-0
would be 35.
Count is the number of bytes of data being downloaded
starting with the font ID byte. The count is a 2-byte value
downloaded as the low byte followed by the high byte.
The font ID byte is a 1-byte number that identifies the
font. The ID byte for the 249x is 35 (x23).
When downloading character data, the start address is
the absolute address of the start of the character data.
When downloading lookup table data, the start address is
the address of the new entry in the lookup table. The start
address is a 2-byte hexadecimal value downloaded as the
low byte followed by the high byte.
When data is character data, it comes from the character
design. When downloading lookup table data, data is as
follows:
Functions
The absolute address of the character's
image data.
Indicates that this is a block graphic
character (connects at 6 LPI).
Indicates a downloaded character.
Indicates a resident character.
The type of block graphic character.
The type of block graphic character.
The type of block graphic character.
The type of block graphic character.
The number of dot columns of character
data printed minus one.
Section 7: Downloading Characters and Fonts
123