NetBSD/share/man/man4/man4.vax/uda.4

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.\" $NetBSD: uda.4,v 1.12 2003/08/07 10:31:14 agc Exp $
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.\" from: @(#)uda.4 8.1 (Berkeley) 6/5/93
.\"
.Dd June 5, 1993
.Dt UDA 4 vax
.Os
.Sh NAME
.Nm uda
.Nd
.Tn UNIBUS
MSCP disk controller driver
.Sh SYNOPSIS
.Cd "uda0 at uba? csr 0172150"
.Cd "uda1 at uba? csr 0160334"
.Cd "mscpbus* at uda?"
.Sh DESCRIPTION
The
.Nm
driver is for UNIBUS
disk controllers that use MSCP. Among these controllers are:
.Pp
.Bl -tag -width xxxx -offset indent -compact
.It DEC UDA50 UNIBUS ctlr
.It DEC KDA50 Q22 bus ctlr
.It DEC RQDX3 Q22 bus ctlr
.El
.Pp
The
.Nm
communicates with the host through
a packet protocol known as the Mass Storage Control Protocol
.Pq Tn MSCP .
Consult the file
.Aq Pa mscp/mscp.h
for a detailed description of this protocol.
.Sh SEE ALSO
.Xr intro 4
.\".Xr ra 4
.Sh HISTORY
The
.Nm
driver appeared in
.Bx 4.2 .
.br
A new
.Nm
driver approach showed up in
.Nx 1.2 .