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

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.\"
.\" Copyright (c) 1996, 1997 Jonathan Stone.
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1998-06-08 15:17:58 +04:00
.\" $NetBSD: tc.4,v 1.5 1998/06/08 11:19:18 lukem Exp $
.\"
.Dd August 6, 1996
.Dt TC 4 pmax
.Os NetBSD 1.2
.Sh NAME
.Nm tc
.Nd
TurboChannel expansion bus adaptor
.Sh SYNOPSIS
.Cd "tc? at mainbus"
.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 cfb 4 ,
.Xr sfb 4 ,
.Xr mfb 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.