I-Data 5250 ALLY - Manual (Page 99)

Page 4-5 CHAPTER 4 — PROGRAMMABLE FUNCTION STRINGS
_h hexadecimal
_d decimal
_b byte
_H HiLoWord
_L LoHiWord
The following example defines PFS 0D — VERMOVE for a Xerox (XES/
UDK) printer.
!AGILE!0D=1B 72 64 _d 20;
This command translates as “Esc r d [insert decimal parameter] (Space).”
GFIDs
IBM systems refer to fonts using numbers from 00001 to 65534. These
numbers are called GFIDs, or global font identifiers. (Sometimes they are
referred to as font identifiers, FIDs or typestyle numbers.)
The System selects a particular font by sending a GFID request to the
printer. The 5250 ALLY takes the GFID request and translates it into an
Escape sequence that the printer will use to select a font (unless the job is a
COR orientation as determined by the 5250 ALLY orientation algorithm
illustrated in Chapter 2 — Advanced Configuration). The Escape sequence
that a particular GFID evokes is determined by two tables used by the
5250 ALLY. The Portrait Font Correspondence Table contains the Escape
sequences for portrait-oriented fonts, and the Landscape Font
Correspondence Table is used for landscape-oriented fonts.
If the printer is listed among the supported configurations, the font
correspondence tables will be loaded with the rest of the configuration.
The fonts evoked by the Escape sequences in the correspondence tables for
the printer will approximate those evoked by the IBM GFIDs as closely as
possible using the fonts readily available for the printer.
User Font Configuration
To edit an existing GFID, load a supported printer configuration, either
from the front panel as described in Chapter 1 — Getting Started, or with
the twinax or alternate host data stream, as described in Chapter 2 —
Advanced Configuration. If a printer configuration has already been
loaded as part of the user’s configuration process, this step is unnecessary.