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EDID (Extended Display Identification Data) is a VESA standard data format
that contains information about a monitor and its capabilities.
The information is stored in the monitor and is used to communicate with the
system through a Display Data Channel (DDC), which sites between the monitor
and the PC graphics adapter.
Inspired from:
- read-edid
- RedHat kudzu ddcprobe
- SuSE hwinfo
int10 and x86emu support by Gwenole Beauchesne <gbeauchesne@mandrakesoft.com>
(partly from Xorg code)
re-organised by Pixel <pixel@mandrakesoft.com>
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monitor-probe-using-X inspiration is Ubuntu's xresprobe,
many thanks to Daniel Stone and Fabio M. Di Nitto.
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cvt.c is gtf.c modified. some info about vesa standards:
DDC 1994
DMT = Discrete Monitor Timings
started in 1989
DMT Version 1.0, Revision 0.8 (1998)
= 28 VESA Standards
+ 3 VESA Guidelines (approved, but not endorsed by VESA)
+ 2 Industry Standards.
GTF in 1996
designed for CRT
doesn't account for different aspect ratios
CVT in 2003
to replace GTF
CVT-RB = Coordinated Video Timings-Reduced Blanking
http://www.dell.com/downloads/global/vectors/2003_cvt.pdf
http://www.vesa.org/Public/EEDIDguideV1.pdf
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