Specifications

SQ: 5-48
RS3: Service Quick Reference Guide
Consoles
Pixel Graphics Video Generator 1984-2503-0001....................
Pixel Graphics Video Generator LEDs
LED
Meaning
DS1
(Green)
No faults are detected on the card. DS1 lights when the OI Processor
completes power up diagnostics.
DS2
(Red)
The Pixel Graphics Video Generator has a fault.
DS8
(Yellow)
The Graphics Processor on the Pixel Graphics Video Generator is
executing c ommands.
DS8 lights when the CRT screen is periodically updated.
DS9
(Yellow)
The specific area of memory where commands are stored is being
used. When the Graphics Processor is finished executing commands,
DS9 goes out and the command area can be accessed.
DS10
(Yellow)
The m emory bus is in use.
DS10 lights when the OI Processor is reading into or writing from the
Pixel Graphics Video Generator memory.
DS11
(Yellow)
Text fields on the CRT screen are being updated.
DS11 goes out after the fields are updated.
DS12
(Yellow)
Horizontal sync.
Under normal operation, DS12 blinks at a regular rate.