Alrighty, firmware 0.76 is out, introducing x4 and x5 modes! I encourage everyone to check compatibility with these new modes and report back!
Here’s my findings with my Philips TV and BenQ G2420HD monitor:
| Philips || BenQ | Mode | NTSC | PAL || NTSC | PAL | x2 | Semi | Y || Y | Y | x3 Gen | Y | N || Y | Y | x3 Opt | Y | Y || Y | Y | x4 Gen | Y* | N || Y | Y | x4 Opt | Y* | N || Y | Y | x5 Gen | N/Y**| Y || Y | N | x5 Opt | N/Y**| Y || Y | N |
* – got x4 modes to work finally! Checked the manual and saw that 1280×1024 (60Hz) PC mode should work, so i increased V.Active to 256 and decreased V.Backporch to below 6.
** – x5 works with GBI (263p, 59.82Hz) but not SNES (PAL modded, 262p, 59.53-59.70Hz) in NTSC mode. Considering that 50Hz SNES works in 1080p, would like to get my hands on a proper NTSC console as it might be the refresh rate.
UPDATE Could get SNES to work by using 1920×1200 mode and the reduce V.Active to 216 and V. Backporch to 2. However the image is shifted down and I can’t fix this until there is V.Frontporch adjustment available in firmware (I made a feature request about this).
Everything I threw at the BenQ worked, except x5 in PAL 50Hz. Scanlines are more or less uneven in all modes except x5 60Hz where they are perfect.