WDSC(4) | Device Drivers Manual (sgimips) | WDSC(4)

# 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

scsibus(4), sgimips/hpc(4)

# HISTORY

Wayne Knowles ported the sgimips incarnation of the `wdsc` driver from the amiga and atari ports. It first appeared in NetBSD 1.6.

February 17, 2017 | NetBSD 9.3