Supermicro SUPER P6DNH, Руководство пользователя

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1-1
Chapter 1: Introduction
Chapter 1
Introduction
1-1 Overview
SUPER P6DNH/P6DNH2 is a high performance, I
2
O
ΤΜ
enabled com-
puter system board based on Intel
®
Pentium
®
Pro 200/180/166/150
MHz processors. They incorporate Intel's 440FX chipset and sup-
port dual processing. SUPER P6DNH uses the 33 MHz i960
®
RP I/
O processor while SUPER P6DNH2 uses the 66 MHz i960 RD I/O
processor.
The Pentium Pro processor is Intel’s top-of-the-line generation of
performance for servers, workstations, and high-end desktops. It
delivers its superior performance through its Dynamic Execution
microarchitecture which allows multiple branch prediction, dataflow
analysis and speculative execution.
The Pentium Pro processor includes 16KB of internal cache and an
integrated 256KB or 512KB non-blocking secondary cache in the
same package. Having the L2 cache inside the package will not
only save space, it will also have the CPU core communicating with
the L2 cache at full speed. Non-blocking means that the transac-
tions on the processor bus do not block subsequent bus transac-
tions. For example, when a cache miss occurs, the processor will
continue to process other instructions while initiating a bus trans-
action to satisfy the cache miss. These instructions could generate
additional cache misses which could cause more bus transactions.
The Pentium Pro processor can maintain up to four concurrent re-
quests of the bus.
The general purpose registers of the Pentium Pro processor are
the same as on previous generations. The processor bus achieves
high bus efficiency by providing support for multiple, pipelined
transactions and deferred replies. A single processor may have up
to 4 outstanding transactions at the same time. There are a variety