Chapter 5 Peripherals
© National Instruments Corporation
5 - 9
VXIpc-850 Series User Manual
Technical Information about the PCMCIA Interface
The PPEC chip has two modes. Mode 0 supports two independent
PCMCIA slots or one PCMCIA slot and two IDE interfaces (for four
drives) . Mode 1 supports four non-independent PCMCIA slots and two
IDE interfaces.
Users who are already familiar with the Intel PPEC should note that the
VXIpc-850 uses Mode 0 (via pulldown resistors on
SPKROUT#/MODE and AREG#/IDECFG) to support hot insertion
and removal of the PCMCIA cards . This is not possible in Mode 1
because the PCMCIA slots in that mode share signals. The insertion
and removal of a card will disrupt communication with other cards in
the system. The IDE interface of the PPEC is disabled in favor of the
CMD0640B PCI-IDE chip described in this manual.
SCSI
The VXIpc-850 uses the NCR 53C810 PCI-SCSI controller from
Symbios L ogic, Inc. (formerly NCR Corporation). The 53C810 is
based on a SCSI I/O processor core and incorporates a PCI bus master
DMA core.
Installing the SCSI Software
To install the SCSI driver, locate an image of the NCR SDMS (SCSI
Device Management System) software, which resides in
C:\images\scsi
. If you are running DOS or Windows 3. x, enter a
DOS shell and type
C:\images\scsi\install
to install the
driver . Refer to the SDMS software information in the VXIpc -850
Peripherals User Manual. Chapter 2 provides detailed installation
instructions for DOS and Windows 3.x. If you are running Windows
NT 3.5, you will need to add the SCSI driver in
C:\images\scsi
under Windows NT Setup . Chapter 3 describes installing the SCSI
driver under Windows NT.
Technical Information about the SCSI Interface
The 53C810 supports the SCSI-2, 8-bit bus . It supports synchronous
transfer rates up to 10 MB/s, and asynchronous transfer rates up to
5 MB/s. It also includes a PCI bus master DMA device that is tightly
coupled to the SCSI core and supports uninterrupted scatter/gather