Glossary-8
SPARCserver 1000 System Service Manual—June 1996
System Board
A system board can contain two SuperSPARC modules and associated SIMMs.
The board also has accommodates three optional SBus cards.
TODC (Time of Day Clock)
TODC contains the system date and time (year-month-day-hour-minutes).
Every system board has a TODC, so at boot time the control board selects the
TODC on one system board to be the master datekeeper for the entire system.
U-number
See J-number.
XBus
The XBus is a high-speed bus located on the SuperSPARC module. It connects
the Bus Watchers (BWs), MXCC, IOC and SB
Ι
. See also Bus.
XDBus
This is the main card cage backplane bus.
Summary of Contents for SunSwift SPARCserver 1000
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