Hello guys,

Sorry in advance if, perhaps, I will be OT 😀.
Firstly, I found this forum through another site:
http://tinyurl.com/m4w42rt (that I translated in English with google 😁).
My aim is to study and trying to reverse a VIDEO BIOS.

In particular I'd like to understand how this guy has reversed and forced the X550 Ati video card to work (in native mode) with other video resolutions and specially with other Hsync freq. (in order to use with the Arcade monitors):
http://tinyurl.com/mgcqnar (scroll down to see all the supported video resolutions).

I started to reverse the X550 Ati video card bios (that I attached), but at this moment it is very hard to me to find the VESA table presents inside (I have experiences on reversing, but never on the bios).

Somebody, smarter than me 😁, would explain how to find the table inside the Vbios?
How to interpret it?
In fact, I noticed that the Table format changes despite the producer: ati, nvidia etc.

P.S.
To reverse I used Ida debugger, but after many hours and days spent to debug...no luck 🙁!!

Please help me
Thank you in advance for any response 😀