NAME
wdsc
- Western Digital WD33c93 SCSI Bus Interface Controller
SYNOPSIS
wdsc* at hpc? offset ?
DESCRIPTION
The
wdsc
driver provides an abstraction layer between the SCSI hardware
found in multitudinous SGI machines (including Personal Iris series,
Indigo, Indy, Challenge S, Indigo2, and Challenge M) and the machine independent
SCSI drivers described in
scsibus(4).
In addition to sending the required SCSI commands to
target devices on the SCSI bus, the
wdsc
driver deals with DMA, device interrupts, sync/async negotiation,
and target disconnects/reconnects.
SEE ALSO
hpc(4),
scsibus(4)
HISTORY
Wayne Knowles ported the sgimips incarnation of the
wdsc
driver from the amiga and atari ports.
It first appeared in
NetBSD1.6.