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EISA(4) Device Drivers Manual EISA(4)

eisa
introduction to EISA bus support

Machine-dependent; depends on the bus topology and EISA bus interface of your system. Typical EISA buses are either connected directly to the main system bus, or via an PCI to EISA bridge. See the intro(4) documentation for your system for details.

OpenBSD includes a machine-independent EISA bus subsystem and several machine-independent EISA device drivers.
OpenBSD provides support for the following devices. Note that not all architectures support all devices.

cac(4)
Compaq Smart ARRAY 2/3/4 SCSI RAID controller
dpt(4)
DPT EATA SCSI RAID controller

ahb(4)
Adaptec 1742 SCSI interface
ahc(4)
Adaptec VL/EISA/PCI SCSI interface
bha(4)
Buslogic SCSI interface
uha(4)
Ultrastor SCSI interface

ep(4)
3Com EtherLink III and Fast EtherLink III 10/100 Ethernet device
Note that most or all EISA devices also have PCI or ISA equivalents. These are listed in pci(4), isa(4), or isapnp(4), respectively. The manual pages for each individual driver also lists the supported bus variants.

intro(4)

The machine-independent EISA subsystem appeared in OpenBSD 1.2.
October 28, 2013 OpenBSD-5.6