Standard System Facilities; Motherboard - Sun Microsystems Ultra 60 Service Manual

C.2.3

Standard System Facilities

In addition to the previously listed features, the system unit provides the following:
TOD/NVRAM for clock and identification functions
Flash PROM for operating system initialization. The flash PROM is
re-programmable through UNIX and OBP utilities.
Single LED for status. If LED is lighted, the system unit has power and some
functional intelligence through OBP.
C.3

Motherboard

FIGURE C-12
illustrates a block diagram of the system unit motherboard.
Appendix C Functional Description C-43