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-12illustrates a block diagram of the system unit motherboard.

Appendix C Functional Description C-43

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Sun Microsystems 60 service manual Motherboard, Standard System Facilities