Genicom MatrixPrinter LA36 - Manual (Page 132)

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5.4 5.4 5.4 5.4 5.4 Firmware Overview Firmware Overview Firmware Overview Firmware Overview Firmware Overview
LA36N/LA36W firmware, stored in ROM, is separated into three independent software groups, –– interpreter
control, print control, and base control (Figure 5.43).
Figure 5.43 Firmware configuration
The interpreter control group analyzes the individual command to each emulation. The print group control is the
software module used in common by all emulations in CG control (bit map, scalable), image control, and bar
code pattern generation such as picture drawing. The base control group executes BIOS control for the host
interface, mechanism section, control panel, and memory.
2
3
Level 1 interrupt
Level 2 interrupt
Level 3 interrupt
Print
inform-
ation
Print control group
Base control group
(engine and interface control)
Interpreter control group 1
Digital PPL2
IBM Proprinter X24E/XL24E
Epson ESC/P2
Print request,
paper feed request, etc.
Host interface
control, control
panel control
Host
Centronics
or
RS-423