Digital Equipment PRIORIS ZX 5000 MP, Руководство пользователя

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Expanding Your Server
3-31
PCI Expansion Slots
The five PCI bus slots on the main logic board support bus mastering 32-
bit PCI expansion boards for performance enhancement.
NOTE: One of the PCI slots (P1-1) is in line with a CPU
module slot (CPU 2). If you install a CPU module in this
slot, you cannot use the PCI slot.
The PCI bus provides:
•
32- and 64-bit memory addressing
• +
5 V dc and
+
3.3 V dc signaling environments
•
Burst transfers at 133 MB per second
•
8-, 16-, or 32-bit data transfers
•
Plug-and-play configuration
•
PeerBus to maximize throughput
Slot Designation Description
PCI slots P1-1, P1-2 Supports bus mastering 32-bit PCI expansion
boards
PCI slot P1-3 Supports bus mastering 32-bit PCI expansion
boards
Designated as a shared slot with EISA slot 1
(1)
PCI slot P2-1 Supports bus mastering 32-bit PCI expansion
boards
PCI slot P2-2 Supports bus mastering 32-bit PCI expansion
boards
Designated as a shared slot with EISA slot 6
(1)
(1) Only one expansion board can reside in EISA slot 1 and 6 or PCI slot P1-3 and P2-2 at any one time.
These slots have to share the expansion slot opening at the rear panel.