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Introduction
How the GA-1121 operates
The GA-1121 provides efficient image processing and printing control. The GA-1121
board includes a 850MHz Intel Pentium III CPU with a built-in floating point
accelerator that runs the PostScript Interpreter, which interprets the page description file
to produce the image pattern in memory. The EFI Fiery RIPChips
™
on the board
control data management and other system functions, freeing up the CPU for efficient
image data processing.
Image data is processed by the GA-1121, which sends the information to the copier.
Raster data is supplied to the laser in the copier at full copier rated speeds in order to
charge the drum and render the final image on paper.
One or more high-speed DIMMs (dual in-line memory module) on the GA-1121 board
hold image data during printing. The DIMM configuration is 256MB.
F
IGURE
1-2
GA-1121 functional diagram
GA-1121 Board
Power supply
External devices
Copier
GA-1121 Assembly
+12VDC and +5VDC
CPU
Network
interface
Operation
Panel
Display
Memory &
Interpreter
Copier
RIPChip
Flash
Networked
computers
RTC/
PCI-ISA
Parallel
interface
HDD
Battery
Super I/O
controller
Operation
Panel
interface
PCI Bus
PC for system
software
installation
Copier
interface