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.\" $XFree86$
.TH GTF 1 __vendorversion__
.SH NAME
gtf - calculate VESA GTF mode lines
.SH SYNOPSIS
.B gtf
.I h-resolution
.I v-resolution
.I refresh
.RB [ \-v | \-\-verbose ]
.RB [ \-f | \-\-fbmode ]
.RB [ \-x | \-\-xf86mode ]
.SH DESCRIPTION
.I Gtf
is a utility for calculating VESA GTF modes. Given the desired
horizontal and vertical resolutions and refresh rate (in Hz), the parameters
for a matching VESA GTF mode are printed out. Two output formats are
supported: mode lines suitable for the XFree86
.B XF86Config(__filemansuffix__)
file, and mode parameters suitable for the Linux
.B fbset(8)
utility.
.SH OPTIONS
.TP 8
.BR \-v | \-\-verbose
Enable verbose printouts This shows a trace for each step of the
computation.
.TP 8
.BR \-x | \-\-xf86mode
Print the mode parameters as XFree86-style mode lines. This is the
default format.
.TP 8
.BR \-f | \-\-fbset
Print the mode parameters in a format suitable for
.BR fbset(8) .
.SH "SEE ALSO"
XF86Config(__filemansuffix__)
.SH AUTHOR
Andy Ritger.
.PP
This program is based on the Generalized Timing Formula (GTF(TM)) Standard
Version: 1.0, Revsion: 1.0. The GTF Excel(TM) spreadsheet, a sample
(and the definitive) implementation of the GTF Timing Standard is
available at <ftp://ftp.vesa.org/pub/GTF/VTF_V1R1.xls>.
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