Supervisor Computer And Communications - GE Druck ADTS 405 Service Manual

Druck ADTS 405 Service Manual

Supervisor Computer and Communications

22. The supervisor computer consists of the computer PCB located on a motherboard. The computer
PCB is a self-contained microcomputer based on the 68000 microprocessor. The software is contained
in two EPROM located on the computer PCB. The computer PCB provides direct communication with
the hand terminal and an internal communications ring in the form of RS422 differential drivers and
receivers. It also provides a direct interface for the Centronics parallel printer output connector on the
front panel.
The motherboard distributes the data, address and control bus to the control computer. It also
contains a ready line interface and EEPROM for storing system configuration information and test
program sequences.
Figure 1-9 Supervisor Computer and Communications
K171 Issue No. 1 Page 1-12