HP B160L Bedienungsanleitung Seite 37

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PA-RISC Processors PA-8900
2.2.15 PA-8900
Used in
rp3410, rp3440
rp4410, rp4440
rp7440, rp8440
C8000
L1500-9X (rp5430), L2000-9X (rp5450) (probably)
N4000-9X (rp7405, rp7410) (probably)
Superdome
Time of introduction
2005
Overview
The PA-8900 is a slightly tweaked PA-8800 processor with a doubled L2 cache and higher clock fre-
quency, keeping the tradition of only small upgrades in the 64-bit processor generation. It is probably
the last processor of the PA-RISC family. Future systems will be based on Itanium-family chips. After
HP dropped its line of Itanium workstations the PA-8900-powered C8000 workstation re one of the
last HP-UX workstations.
Information on the PA-8900 is limited, it seems there was not much interest releasing details on its
architecture.
Details
PA-RISC version 2.0 64-bit
Twenty functional units: four integer ALUs, four shift/merge units, four complete load/store
pipelines, four Floating Point multiply/accumulate units, four Floating Point divide/square root
units
Two address adders
SMP-capable
External memory and I/O controllers
240-entry fully-associative dual-ported TLB per core
32-entry BTAC (branch target address cache) per core
2048-entry BHT (branch history table) per core
Dynamic and static branch prediction modes
4-way superscalar
30
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