Technical data

SunOS 5.5 Devices dpt(7D)

NAME dpt − DPT 2011, 2012, 2021, 2022, 2122, 2024, 2124, 3021, 3222, and 3224 controllers

SYNOPSIS ISA, EISA: dpt@ioaddr,0

PCI: dpt@reg

AVAILABILITY x86

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

I/O subsystem and theDPT ISA bus master 2011 and 2021 Small Computer System Inter-

face (SCSI) controllers, the DPT EISA 2012, 2022, and 2122 SCSI controllers, the DPT PCI

2024 and 2124 SCSI controllers, and theDPT SCSI RAID controllers: 3021 (ISA) , 3222(EISA),

and 3224 (PCI) .

The dpt module can be conﬁgured for disk and streaming tape support for one or more

host adapter boards, each of which must be the sole initiator on a SCSI bus. Auto

conﬁguration code determines if the adapter is present at the conﬁgured address and

what types of devices are attached to it. If a memory cache module is installed on the DPT

board, this cache will be ﬂushed to disk by the dpt driver module when the system is

shut down by the system administrator.

FILES /kernel/drv/dpt.conf conﬁguration ﬁle for the dpt driver. There are no user-

conﬁgurable options in this ﬁle.