Installation guide

Futurebus+ Subsystem
Futurebus+ Subsystem
Overview
DEC 4000 AXP systems implement Futurebus+ Profile B as the
I/O bus. Features of Futurebus+ include:
• Industry open standard bus
• 32- or 64-bit, multiplexed address and data bus
• Asynchronous protocol
• Centralized arbitration
• 160 MB/s bandwidth, asymptotic/100 MB/s sustained
Six Futurebus+ modules can reside in the Futurebus+ portion of
the card cage. The slots are numbered 1–6, from right to left.
References
The following table describes additional sources of information
about your system.
Task Document
Understand system unit
internals
DEC 4000 AXP Model 600 Series
Technical Manual
Understand mass storage
devices
Device-specific owner’s guide
Order a UPS Systems and Options Catalog
Learning More About Your System 7–11