System Memory; Hardware Monitor - NEC POWERMATE 5100 Service Manual

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the expense of replacing ROM BIOS chips is eliminated, so system
maintenance costs are reduced
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there is less chance of inadvertently damaging the system board than
when physically replacing ROMs
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new technology can be incorporated while maintaining corporate
standards
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network administrators can exercise company-wide control of BIOS
revisions.
The BIOS programs execute the Power-On Self-Test, initialize processor
controllers, and interact with the display, diskette drive, hard drives,
communication devices, and peripherals. The system BIOS also contains the
Setup utility. The POST copies the ROM BIOS into RAM (shadowing) for
maximum performance.
The Flash ROM allows the system and video BIOS to be upgraded with the
BIOS Update utility, without having to physically remove the ROM (see
Section 2 for further information on the BIOS Update utility). The Flash ROM
supports the reprogramming of the system BIOS and the video BIOS.

System Memory

The system comes with between 32 MB and 256 MB of SDRAM installed in
DIMM sockets on the system board.
The memory configuration consists of two sockets. The DIMM sockets accept
168-pin, 64-bit (non-ECC), 16-, 32-, 64-, and 128-MB DIMMs (64-MB and
128-MB as available). See "DIMM Sockets" for a list of supported DIMMs.

Hardware Monitor

The National Semiconductor Heceta LM80 chip provides economical
instrumentation capabilities for reduced cost of PC ownership when the system
is used with the LANDesk
specific integrated circuit (ASIC) features:
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integrated ambient temperature sensor
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power supply voltage monitoring to detect excessively high or low
voltage levels
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registers for storing POST hardware test results and error codes
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remote reset capabilities from a remote peer or server through LANDesk
Client Manager v.3.2.
When ranges for temperature or voltage are exceeded, an interrupt is activated.
The hardware monitor component connects to the ISA bus as an 8-bit I/O
mapped device.
4-14 System Board
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Client Manager. This single-chip application-