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Main => Monitor/Video Forum => Topic started by: Ummon on May 08, 2009, 08:24:14 pm

Title: Getting porches and widths from modelines????
Post by: Ummon on May 08, 2009, 08:24:14 pm

I'm playing around with the Nvidia forceware, but I can't figure out how to get the values of front/back porch and sync width from the modelines I have. (I haven't for the life of me been able to find anything online to definitively help me out here.) They are obviously not the same things as sync start/end and total. Do I just do some simple arithmetic with these latter numbers to get the porches and sync width?

Title: Re: Getting porches and widths from modelines????
Post by: Ummon on May 08, 2009, 08:51:26 pm

Well, I cheated and used powerstrip, which puts all the values in when you enter HV clocks, though I'm still curious how to figure the above.  ?

(Incidentally, even when using the forceware, the card automatically doubled the H and V - in the case of 256x240 being 29khz / 120hz. So weird that only Advancemame can access this card to do all 15khz modes.)