Installation guide

NCR 53C810, 53C815, 53C820, 53C825
HBAs
Solaris Device Driver:
ncrs
Device Type:
SCSI
Adapters:
NCR 53C810, 53C815, 53C820, 53C825 (multiple
adapters can be configured)
Bus Type:
PCI
Preconfiguration Information
Known Problems and Limitations
Because the NCR BIOS and the Solaris fdisk program may be incompatible, use
the DOS version of FDISK (or equivalent utility) to create an entry in the FDISK
partition table before installing the Solaris software. Create at least a 1-cylinder
DOS partition starting at cylinder 0. If the DOS partition isn’t created, the system
won’t reboot after Solaris installation.
An add-in card with the 53C815, 53C820, or 53C825 controller can only be used in
a bus-mastering PCI slot. On motherboards with only two PCI slots, both of the
PCI slots are usually bus-master capable. On motherboards with three or more PCI
slots, and on motherboards with several embedded PCI controllers, some of the
PCI slots may not be bus-master capable.
Some PCI motherboards with the NCR SDMS BIOS and an embedded 53C810
controller do not work correctly with 53C82x add-in cards that also have an NCR
SDMS BIOS. Upgrading the motherboard BIOS, the add-in card, or both may
prevent these conflicts.
The SCSI Tagged Queuing option is not supported.
On some early PCI systems with the 53C810 chip on the motherboard, the
interrupt pin on the chip is not connected. Such a system cannot be used with
Solaris software.
The Solaris ncrs driver does not support the Wide SCSI option. Some add-in
53C8xx cards include connectors for both narrow cables (8-bit SCSI A cables) and
wide cables (16-bit SCSI P cables). You can connect devices to the SCSI Wide
connectors using SCSI P cables, but the Solaris ncrs driver will not initiate or
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Information Library for Solaris 2.6 (Intel Platform Edition) ♦ August 1997