Compuprint 4247-Z03 Programmer Manual - Manual (Page 217)

Decimal Hex Content Description
10 A 00 Reserved
11 B 01-FF Ending Code Point
12 C 00 Reserved
13 D 00 Reserved
14 E 00 Reserved
15-16 F-10 0001 - 7EFF Loaded Font Identifier (See Note 3)
17-x 11-x 00...00 Reserved (See Note 4)
(x+1) - xx (x+1) - xx 02FF...XX Self-Defining Fields
o-p o-p XX...XX Character Raster Data
Notes:
1. Vertical format download refers to the method used to send the character patterns to the printer. The
bits are organized as a sequence of vertical cell slices. Each slice contains a number of bits equal to
the uniform box Y size (byte 7). Slices are contiguous (run together) in the raster pattern data. The last
slice of each character is padded with the minimum number of bits needed to reach a byte boundary.
Padded bits are always zeros. The number of vertical slices per character is equal to the uniform box
X size (byte 6).
The first vertical slice received by the printer is the left reference edge of the character box. The last
slice received is the right reference edge of the character box. The first received pel of each slice
makes up the top reference edge of each character box. The last received non-padding pel of each
slice makes up the bottom reference edge of each character box.
2. The meaning of this byte depends upon the font selected, as explained below.
3. An LFE entry must exist for this LFID prior to receiving the LSS command; otherwise an error occurs.
4. The value of byte 4 determines the number of bytes in this field.
5. Load symbol set into Fast Draft fonts is not allowed.
Character Box Size X Dimension (Byte 6): The meaning of byte 6 is as follows:
v Resident Fonts, except PSM
– 0A - DP Quality
– 14 - DP Text and NLQ Quality
v Resident PSM Fonts
– 01-FF - DP Text Quality
– 01-FF - NLQ Quality
v Non-Resident Fonts
– 01-FF - With Y Dimension (byte 7) equal to 09
– 01-FF - With Y Dimension (byte 7) equal to 12.
The print quality must be set appropriately (with the PQC command) before the LSS command is issued if
the font is present in the printer (specified by the LFE command).
Self-Defining Fields: If byte 5, bit 7, equals one, then the DATA field includes one or more self-defining
fields. The format of each field is:
L T Data
L and T are single byte values that specify the length and type of self-defining field. The only valid
self-defining field is the terminator field X'02FF', without any data. The character raster patterns
immediately follow this field. The printer ignores any other self-defining fields.
Chapter 4. IPDS Programming Information 197