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GEK-00029B 5000 Series Programmer’s Manual
195
CHAPTER 8.
PPL3 PLUS EMULATION
INTRODUCTION
General Considerations
This chapter describes the GENICOM 5000 implementation of the
DEC PPL3 printer protocol. The focus is on the following:
▪
Control Codes
▪
Special Characters
▪
Commands
▪
Page Coordinate System
▪
Sixel Graphics
While PPL3 emulation is backward compatible with PPL1 and PPL2
commands, it is not recommended that the user mix commands from
different levels of the PPL emulation.
Coded Characters
Character processing within the PPL3 emulation is broken down into
several categories of characters.
▪
C0 Control Set:
00H-1FH (0-31 decimal).
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GL Graphics Characters:
94 graphic characters in the range of
21H-7EH (33-126 decimal) referred to as the left-hand graphics
set.
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C1 Control Set:
80H-9FH (128-159 decimal).
▪
GR Graphics Characters:
94 graphic characters in the range of
10H-FEH referred to as the right-hand graphics set.
▪
Special Characters:
This are outside of the other ranges
described and consist of the characters represented by the
hexadecimal values 20, 7F, A0, and FF.