For Sale:SUN MOTHERBOARDSun SPARCstation 1 Motherboard 20MHzMotherboard Part#501-1382 / 270-1382Model#Sun-4/60 / Sun4c/ICode Name:CampusManufacturer:Sun Microsystems / UnisunDescription:0MB MotherboardNVRAM:NVRAM needs replacement /MISSING BOOT PROMCondition:Clean Pull
This listing is for the 501-1382 SPARCstation 1 motherboard pictured.
501-1382 Specifications:
- 20MHz LSI Logic RUSC CPU
- Weitek 3170 FPU coprocessor
- 16 30-pin SIMM Slots, 0MB included (1MB and 4MB SIMMs supported)
- 3 SBUS Slots
- w/oBoot Prom
- w/NVRAM condition unkown
501-1382 Manufacturer Notes:
- End of Support Life for the SPARCstation1 was 7/1/95.
- The minimum operating system is SunOS 4.0.3c.
- The minimum operating system for Boot PROM 2.4 is SunOS 4.1.1.
- Use 1MB SIMM 501-1408-01.
- Use 4MB SIMM 501-1625-01 or 501-1739-01.
- Bug 1047696 affects the installation of SunOS 4.1.1 and 4.1.1 Rev B. If 1MB and 4MB SIMMs are mixed, install the 4MB SIMMs in Bank 0 when installing miniunix.
- SIMM installation order is Bank 0, Bank 2, Bank 1, Bank 3.
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 “host id”, 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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