.\" Copyright (c) 1980 Regents of the University of California.
.\" All rights reserved.  The Berkeley software License Agreement
.\" specifies the terms and conditions for redistribution.
.\"
.\"	@(#)ct.4	6.2 (Berkeley) 05/16/86
.\"
.TH CT 4 ""
.UC 4
.SH NAME
ct \- phototypesetter interface
.SH SYNOPSIS
.B "device ct0 at uba0 csr 0167760 vector ctintr"
.SH DESCRIPTION
This provides an interface to a Graphic Systems C/A/T phototypesetter
or an Autologic APS-Micro5 using a DR11C interface.
Bytes written on the file specify font, size, and other control
information as well as the characters to be flashed.  The
coding is not described here.
.PP
Only one process may have this file open at a time.  It is write-only.
.SH FILES
/dev/cat
.SH "SEE ALSO"
troff(1)
.br
Phototypesetter interface specification
.SH DIAGNOSTICS
None.