Thus, in this case, the sym driver will attach all 53C8XX based controllers present in the system. This driver offers other options that are not currently exported to the user. This feature allows the driver to safely probe against bus mode and to set up the chip accordingly. In these instances, the system recovers and the tape drive remains usable. By default, when both the ncr 4 and sym drivers are configured, the sym driver takes precedence over the ncr 4 driver.
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You can still use the tar command to add or extract files to or from the tape in the drive. In these instances, the system recovers and the tape drive remains usable. It also provides generic SCSI features such as tagged command queueing and auto-request sense.
On some Lkgic motherboards Intel NX chipset using P90 or slower processors, ncrs hangs and this message is displayed on the console: Upgrading the motherboard BIOS, the add-in card, or both may prevent these conflicts.
By default the driver only supports HVD for these chips. Only HVD implementations that conform with Symbios Logic recommendations can be detected by the driver. Do not attempt to connect wide targets to the narrow lobic of the cards listed as supporting narrow disks.
The ncrs driver supports at least Revision 4 of the 53C chipset.
This driver is configured by default for a maximum llogic outstanding commands per bus, 8 LUNs per target and 64 tagged tasks per LUN. This driver offers other options that are not currently exported to the user.
On some Pentium motherboards Intel NX chipset using P90 or slower processors, ncrs hangs and this message is displayed on the console:.
LSI 53CA : Logic PCI To SCSI I/O Processor Technical Manual : Page
Thus, in this case, the sym driver will attach all 53C8XX based logix present in the system. Some of lkgic options are planned to be exported through sysctl 3 or an equivalent mechanism in a future driver releases and therefore, no compatibility is guaranteed. These numbers are not so much limited by design as they are considered reasonable values for current SCSI technology.
On some early PCI systems with the 53C chip on the motherboard, the interrupt pin on the chip is not connected. See the ncrs 7D man page.
This feature allows the driver to safely probe against bus mode and to set up the chip accordingly. You can suppress these warnings by disabling tagged queuing in the ncrs.
Changing these options is not recommended unless absolutely necessary. By default, when both the ncr logix and sym drivers are configured, the sym driver takes precedence over the ncr 4 driver.
It also offers the advantage of architectural improvements available only with newer chips. If the DOS partition isn’t created, the system won’t reboot 53810a Solaris installation.
Symbios Logic 53C810A
Such a system cannot be used with Solaris software. This option is supplied for convenience but it is neither recommended nor supported.
Driver features include support for wide SCSI busses and fast10, logkc, fast40 and fastdt synchronous data transfers depending on controller capabilities. Oogic at least a 1-cylinder DOS partition starting at cylinder 0. BUGS No known bugs. The sym53c8xx driver is derived from the ncr53c8xx driver, which was ported from the FreeBSD ncr 4 driver to Linux These values can be increased by changing appropriate constants in driver header files not recommended.
These configurations are not supported. Previous revisions were pre-release versions of the chip, so there might still be a few in circulation.