1-8 Technical Information
The MMX processor has 32 KB of built-in cache memory (16 KB instruction and 16 KB
data). To use the Pentium processor’s power, the system features an optimized 64-bit
memory interface and 256 KB of secondary write-back cache located on the system board.
The processor is compatible with 8-, 16-, and 32-bit software written for the Intel386™,
Intel486™, Pentium, and Pentium Pro processors. The Pentium processor is mounted into a
socket-7 zero insertion force (ZIF) socket. Systems with the 166-MHz processor can be
upgraded to 200-MHz. The socket provides an easy upgrade path.
System BIOS
The system BIOS is from Intel, based on Phoenix Technologies Limited (PTL) BIOS ‘95.
This ISA- and PCI-compatible BIOS is contained in a flash memory device on the system
board. The BIOS provides the Power-On Self-Test (POST), the system Setup program, a
PCI and IDE auto-configuration utility, and BIOS recovery code.
The system BIOS is always shadowed. Shadowing allows any BIOS routine to be executed
from fast 32-bit DRAM on the system board, instead of from the slower 8-bit flash device.
NEC’s Flash ROM allows fast, economical BIOS upgrades. The Flash ROM is a
reprogrammable EPROM containing both the system and video BIOS. Using the Flash
ROM to change the ROM BIOS provides the following advantages:
the BIOS upgrade is performed quickly and easily
the expense of replacing ROM BIOS chips is eliminated, so system maintenance
costs are reduced
there is less chance of inadvertently damaging the system board than when
physically replacing ROMs
new technology can be incorporated while maintaining corporate standards
network administrators can exercise company-wide control of BIOS revisions.
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