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Chapter 2 Functional Overview
VXIpc 800 Series User Manual 2-4 © National Instruments Corporation
CPU Card The modular architecture of the VXIpc 800
Series contains a plug-in CPU card that can
accommodate various Pentium/Pentium
Pro-class processors. This card includes the
CPU, chipset support that connects the CPU
subsystem to the PCI bus, and the system cache
and RAM.
System I/O This block has the bridge between the PCI bus
and the ISA bus. It also has PCI bus arbitration
logic and integrates PC-specific hardware such
as the DMA and interrupt controllers.
PCI Expansion Slot This is a general-purpose PCI slot. It can
accommodate any standard 5 V, 32-bit PCI card
with a modified mounting bracket.
ISA Expansion Slot This is a general-purpose ISA expansion slot.
The VXIpc-860 can accommodate a half-length
XT-size card, while the VXIpc-850 can
accommodate a full-length XT-size card.
However, the DRAM configuration may
mechanically interfere with a full-length card.
Refer to Appendix E,
Modifying and Installing
I/O Expansion Boards
, for more information.
SCSI The SCSI circuitry uses a PCI-SCSI bridge to
provide a flexible SCSI-2 connection on the
front panel, usable for such devices as external
hard disks and CD-ROM drives.