For Sale:
SUN MOTHERBOARD# 270-1858-02 SYSTEM BOARD40MHZ CPU16 MB Ram Memory Installed ( 4pcs of 4mb simms )Includes the Sun CPU & TI CPU & Att Cache chip
Guaranteed working board, but please note I cannot guarantee the NVRAM Clock Chip Battery.It is the chip with the orange label it is socketed and easy to remove if needed.
If you have any questions or concerns please ask before purchasing. Thank You :)Please check my other sales for more Sun equipment and memory if you need some.
FROM THE INTERNET:A problem that notoriously affects older Sun workstations is NVRAM failure.

The NVRAM chips in Sun workstations contain:

• a clock, to keep time when the computer is off
• memory to store boot device order, serial console modes, etc (in a PC you'd call that the BIOS settings)
• details about the machine itself: its “hostid”, what model it is, an Ethernet MAC address. Sun calls this IDPROM.
• a battery - the “non-volatile” part of NVRAM is managed here by having a battery keep an SRAM alive

Over the years, that battery dies. Unfortunately, because it is packaged as one chip, you can't pop in a new button-cell - you have to replace the whole chip. This doesn't just mean your computer will lose the ability to tell time - (entertainingly) the machine will lose it's IDPROM data - it no longer knows what model it is or what its MAC address is supposed to be.

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