Printronix S828, Programmer'S Manual

Page: 126 / 424

Programmer Manual PTX ‐ S828
Chapter 5 IPDS Programming Information 124 260071 ‐ 001A
quality combinations defined in home or page state. Page segments use the font equivalence tables active
at the time the Include Page Segment command processes. In addition, the LFEs that were stored as part
of the page segment add to the font equivalence tables during the include page segment process up to a
maximum of 20 loaded font ID/print quality combinations.
Each Begin Overlay command starts the overlay with the loaded font IDs currently defined and will add its
LFE entries during the overlay’s definition up to a maximum of 20 loaded font ID/print quality combinations
total. On a logical page, the sum of each included overlay’s number of loaded font ID/print quality
combinations (whether included through Include Overlay or through Load Copy Control commands) added
to the number of loaded font ID/print quality combinations on the logical page cannot exceed 58.
Each font equivalence entry is 16 bytes, in the following format:
Decimal Hex Value Description
0 0 00-FE Local Font ID
FF Reserved (4248 mode) (See Note 4)
1-2 1-2 0001 - 7EFF Font Host Assigned ID (See Note 3)
3-4 3-4 Font Inline Sequence (Ignored)
5-6 5-6 0000 Reserved
7-8 7-8 XXXX Code Page ID (See Code Page ID Chart)
FFFF Use the Printer Defined Default Code Page ID
9-10 9-A XXXX Font (Style) ID (See Font ID Chart)
FFFF Use the Printer Defined Default Font
11-12 B-C 0000 Reserved
13 D 00 Reserved
14 E Font Attributes
Bit 0 Font Is Present in Printer (See Notes 1 and 2)
Bit 1-2 Reserved
Bit 3 Double High (See Notes 5 and 6)
Bit 4 Italicized Print (See Note 6)
Bit 5 Double Strike
Bit 6 Bold
Bit 7 Double Wide
15 F 00 Reserved (See Note 2)
Notes:
1. If the Font Present in Printer bit is on, this indicates to the printer that the font has previously been
downloaded or is permanently resident. If this bit is off, this indicates to the printer that the font is not
present in the printer and will, presumably, be downloaded (by an LSS command) prior to selection for
printing.
2. Additional font equivalence entries, each 16 bytes long, can follow this entry, using the same format.
No more than 20 different loaded font ID/print quality combinations can be active at a given time.
3. Use the same Loaded Font ID when using the same Font ID and Code Page ID for several Local IDs.
This saves storage space and font allocation time in the printer.
4. Local ID byte 0 may use any value 1 to FE. A value of FF is supported if the printer is in 4224
Emulation Mode for compatibility, but is not recommended. See “Set Character Set” , “Logical Page
Descriptor (LPD)”, and “Printer Initialization and Preparation Sequence” for more information regarding Local
IDs equal to FF.