Chapter 8.Ppl3 Plus Emulation; Introduction; General Considerations; Coded Characters - Genicom GEK 00031B Programmer's Manual

CHAPTER 8.

INTRODUCTION

General Considerations

Coded Characters

GEK-00029B
PPL3 PLUS EMULATION
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.
Character processing within the PPL3 emulation is broken down into
several categories of characters.
C0 Control Set: 00H-1FH (0-31 decimal).
▪
GL Graphics Characters: 94 graphic characters in the range of
▪
21H-7EH (33-126 decimal) referred to as the left-hand graphics
set.
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.
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