NetBSD/share/man/man4/man4.pmax/tc.4

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.\"
.\" Copyright (c) 1996, 1997 Jonathan Stone.
.\" All rights reserved.
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.\" This product includes software developed by Jonathan Stone.
1999-04-07 00:24:37 +04:00
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2000-07-24 15:49:42 +04:00
.\" $NetBSD: tc.4,v 1.10 2000/07/24 11:49:42 ad Exp $
.\"
.Dd August 6, 1996
.Dt TC 4 pmax
.Os
.Sh NAME
.Nm tc
.Nd
TurboChannel expansion bus adaptor
.Sh SYNOPSIS
.Cd "tc* at mainbus0"
.Sh DESCRIPTION
The
.Nm
driver provides support for the DEC TurboChannel expansion bus on
DECstation 5000 series machines.
TurboChannel is a 32-bit wide synchronous DMA-capable bus, running
at 25 MHz on higher-end machines and at 12.5 MHz on lower-end machines.
.Sh SEE ALSO
.Xr intro 4 ,
.Xr asc 4 ,
.Xr ioasic 4 ,
.Xr le 4 ,
.Xr px 4
.Sh HISTORY
The
.Nm
driver first appeared in
.Nx 1.1 .
.Sh BUGS
The
.Nm
driver makes poor use of interrupt priority on the 5000/1xx series.