Technical data

pcscsi(7D) Devices SunOS 5.5

NAME pcscsi − low-level module for the AMD PCscsi, PCscsi II, and PCnet-SCSI PCI-to-SCSI

bus adapters

SYNOPSIS pcscsi@ioaddr,0

AVAILABILITY x86

DESCRIPTION The pcscsi module provides low-level interface routines between the common disk/tape

I/O subsystem and the Am53C974 (PCscsi), Am53C974A (PCscsi II), and Am79C974

(PCnet-SCSI) Small Computer System Interface (SCSI) controllers.

The pcscsi module can be conﬁgured for disk and streaming tape support for one host

bus adapter device. Each host bus adapter device must be the sole initiator on a SCSI bus.

Auto conﬁguration code determines if the adapter is present on the PCI bus, what its

conﬁguration is, and what types of devices are attached to it.

As these are PCI devices, any conﬁguration is done through the PCI BIOS. Generally

these settings can be accessed through a CMOS utility.

CONFIGURATION The driver attempts to initialize itself in accordance with the conﬁguration the PCI BIOS

assigned to the chip.

While there is information found in the conﬁguration ﬁle, pcscsi.conf, this information is

used only by the I/O subsystem. There are no user-conﬁgurable options.

FILES /kernel/drv/pcscsi.conf conﬁguration ﬁle for the pcscsi driver.