.\"	$OpenBSD: topcat.4,v 1.4 2003/06/06 10:29:42 jmc Exp $
.\"
.\" Copyright (c) 1990, 1991, 1993
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.\" This code is derived from software contributed to Berkeley by
.\" the Systems Programming Group of the University of Utah Computer
.\" Science Department.
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.\"     from: @(#)tc.4	8.1 (Berkeley) 6/9/93
.\"
.Dd March 16, 2003
.Dt TOPCAT 4 hp300
.Os
.Sh NAME
.Nm topcat
.Nd
.Tn HP98544
.Dq Topcat ,
.Tn HP98550
.Dq Catseye
and
.Tn A1416A
.Dq Kathmandu
frame buffers
.Sh DESCRIPTION
The
.Tn HP98544 ,
.Tn HP98545
and
.Tn HP98547
.Dq Topcat ,
as well as the
.Tn HP98548 ,
.Tn HP98549
and
.Tn HP98550
.Dq Catseye
and the
.Tn A1416A
.Dq Kathmandu
are accelerated frame buffers, with the following resolution and color depth:
.Bl -tag -width A1416A -offset indent -compact
.It 98544
1024x768 monochrome
.Dq Topcat
.It 98545
1024x768 4-bit color
.Dq Topcat
.It 98547
1024x768 6-bit color
.Dq Topcat
.It 98548
1024x768 6-bit color
.Dq Catseye
.It 98549
1280x1024 monochrome
.Dq Catseye
.It 98550
1280x1024 8-bit color
.Dq Catseye
.It A1416A
1280x1024 8-bit color
.Dq Kathmandu
.El
.Pp
The
.Nm
driver provides a frame buffer abstraction to the
.Xr grf 4
driver, and the associated
.Xr ite 4
console framework.
.Pp
The Topcat, Catseye and Kathmandu display cards are not user configurable.
If one is present on a
system, it will always have a frame buffer address of 0x200000 and a control
register address of 0x560000.
These are the
.Tn HP
series 300
.Tn ITE
(Internal
Terminal Emulator) defaults.
The device can also be used as a graphics output device.
.Sh SEE ALSO
.Xr ioctl 2 ,
.Xr dvbox 4 ,
.Xr gbox 4 ,
.Xr grf 4 ,
.Xr hyper 4 ,
.Xr intro 4 ,
.Xr rbox 4