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10 SCSI I
NTERFACE
Please note, that the option
as these additional data signals are not connected to this connector.
The SCSI-2 interface is realized with the NCR 53C810 controller. This chip is fully supported by NCR SCSI
Device Management System (SDMS) software, that supports the Advanced SCSI Protocol Interface (ASPI)
and the ANSI Common Access Method (CAM). The NCR 53C810 operates the SCSI bus at 5 MB/s asyn-
chronously or 10 MB/s synchronously, and bursts data to the host at full PCI speed up to 110 MB/s (at 33
MHz).
The SCSI-2 controller has full PnP recognition, a 64-Byte DMA FIFO and all SCSI signals are ESD protected
up to 2 kV.
The user can connect up to 7 SCSI devices to the NCR 53C810, all the SCSI devices are daisy chained
trough one SCSI-Bus cable. This cable must have terminators at both ends; i.e. the beginning device and
end device. Without proper installation of the terminators it will cause a SCSI devices malfunction. On the
PCC-P5 board the terminator is active, when jumper J37 is set.
The following figures illustrate where the terminators can be placed:
Example 1:
PCC-P5
Example 2:
The boot devices on the SCSI-2 interface:
- any SCSI-2 harddisk
- CD drives
Until boardversion V2.1, the SCSI extension had to be programmed into the U75 (EPROM)
-
Since boardversion V2.2, SCSI extension is programmed within the core BIOS.
-
(
)
OPTION
SCSI-2
is not available on the SCSI connector J38,
PCC-P5
- Syquest removable media
- Tapes, MO- and ZIP-Drives
123
PCCP5 Manual V2.3
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