.\"	$NetBSD: grfet.4,v 1.7 2017/02/17 22:24:46 christos Exp $
.\"
.\" Copyright (c) 1997 The NetBSD Foundation, Inc.
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.\" This code is derived from software contributed to The NetBSD Foundation
.\" by Bernd Ernesti.
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.Dd February 17, 2017
.Dt GRFET 4 amiga
.Os
.Sh NAME
.Nm grfet
.Nd 8/16/24/32-bit color graphics driver
.Sh SYNOPSIS
.Cd "grfet* at zbus0"
.Cd "grf6 at grfet?"
.Cd "ite6 at grf6"
.Sh DESCRIPTION
The
.Nm
device driver supports graphics boards with the Tseng ET4000 or
ET4000W32 chipset and a Sierra 11483 or Brooktree BT482 DAC.
It supports the minimal ioctl's needed to run X11.
.Sh HARDWARE
The
.Nm
interface supports the following ZorroII/III expansion cards:
.Bl -tag -width "xxxxxxx" -offset indent
.It Em Domino
A Zorro II only card with the Tseng ET4000 chipset and a Sierra 11483 DAC. From
Village Tronic, manufacturer 2167, product 1 for the memory base and 2
for the register base.
.It Em Merlin
A Zorro II/III card with the Tseng ET4000W32 chipset and a Brooktree BT482 DAC.
From Expert, manufacturer 2117, with the product 3 for the memory base and
4 for the register base.
.It Em oMnibus
A Zorro II only Zorro/AT bridge board with a separate VGA card usually with
a Tseng ET4000 chipset and a Sierra 11483 DAC, but a few others are also
supported.
Once made by Oliver Bausch and sold by Armax, manufacturer 2181, product 0
for the memory base and also 0 for the register base.
.El
.Sh FILES
.Bl -tag -width "xxxxxxxxxx" -compact
.It Pa /dev/grf6
graphics interface special file
.It Pa /dev/ttye6
console interface special file for the internal terminal emulator
.El
.Sh SEE ALSO
.Xr amiga/console 4 ,
.Xr amiga/ite 4 ,
.Xr amiga/grfconfig 8
.Sh HISTORY
The
.Nm
interface first appeared in
.Nx 1.2 .
.Sh BUGS
.Nm
does not support the sync-on-green flag from
.Xr amiga/grfconfig 8 .