HP 250C - Manual (Page 54)

5Ć12 Functional Overview C4699Ć90000
Plotter Architecture
The plotters have a multiprocessor architecture similar to that of the DesignJet 650C. The
following diagram gives an overview of the architecture:
Main
Processor
(80960CA) Internal
Memory
(ROM/RAM)
Expansion
Memory
(SIMM DRAM)
Upgrade
Memory
(SIMM ROM)
Servo
Processor
(8052)
Encoders
&
Motor Drivers
EEPROM
(512 Byte)
Sensors
& Front Panel
Swath RAM
(1 Mbyte)
Nozzle Timing
ASIC
Cartridge
Drivers
Carriage’s
Line Detector
Support
& Shuffler
ASIC
IEEE 1284
ASIC
Bi–tronics
80960 BUS
Host
RS–232–C