Yeah, and I tried to put my Picasso4 at 2000x1500 interlaced in my 20" Eizo and it worked but I think it's too slow (and small) for a Picasso4. I'm not saying it's impossible to have a Picasso4 at 1280x1024, but I think that it's a little slow for that...
You can't put a Picasso4 at 85Hz in 1024x768 in 16bits in non interlaced modes without overclocking it, so I hope you get my point. In contrast, my Voodoo3 gives me 1600x1200 with a sharper image without problems with decent refresh and always without interlaced...
I hope the tft monitor reduces the flicker, otherwise it'll be unusable for me (I don't care much because I don't have a TFT monitor and I already have a Voodoo3)...
Anyway, as you have got it working could you please write down your settings? It would help a lot to the person who asked the question.
A friend of mine has problems creating a 320x240 mode for his TFT so I guess he would appreciate to see your settings too.