GTF(1) UNIX Programmer's Manual GTF(1)
gtf - calculate VESA GTF mode lines
gtf h-resolution v-resolution refresh [-v|--verbose] [-f|--fbmode] [-x|--xf86mode]
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 XF86Config(5) file, and mode param- eters suitable for the Linux fbset(8) utility.
-v|--verbose Enable verbose printouts This shows a trace for each step of the computation. -x|--xf86mode Print the mode parameters as XFree86-style mode lines. This is the default format. -f|--fbset Print the mode parameters in a format suitable for fbset(8).
Andy Ritger. 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) imple- mentation of the GTF Timing Standard is available at <ftp://ftp.vesa.org/pub/GTF/VTF_V1R1.xls>. XFree86 Version 4.5.0 1
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