First post, by darry
I could not find a reference to this having been done before (correct me if I am wrong) and am quite excited.
IMHO, this is significant enough that it deserves its own thread, because :
a) It allows native HDMI/DVI on a modern monitor, no adapter needed (only an EDID emulator) and preserves 70Hz output (VGA input on monitors is going away eventually)
b) It allows timing sensitive applications such as Second Reality that must be run at 70 Hz to play at properly over DVI without frameskipping (with capable monitor)
c) It allows 70Hz output at resolutions that a single link (165 MHz) would not normally be capable of .
darry wrote on May 27 2020, 15:55:
I had an idea: I modified an EDID from a 1600x1200 60Hz monitor to 1600x1200 70Hz (with reduced blanking to fit under single link DVI's bandwidth) and flashed into my EDID emulator .
I then plugged the EDID emulator between my Geforce FX 5900's output and my Acer VW257 75Hz monitor (with VESA adaptive sync enabled in menu) .
The result: 1600x1200 in 4x3 at 70Hz over DVI /HDMI under pure DOS and without apparent frameskip !!!! I realised I actually do notice frameskip when paying attention.
This did not work with the monitor's native EDID (got 1920x1200 stretched at 60Hz).
Ironically, Windows 98SE still outputs 1600x1200 60Hz (the Nvidia driver probably does not handle the reduced blanking, I even tried forcing 70Hz, but to no avail). Windows dos boxes run at 70Hz in fullscreen mode, but exiting to DOS mode switches to 60Hz until reboot .
I might try Powerstrip .
EDIT: The monitor has a preserve aspect ratio option which I enabled to get 4x3 aspect ratio when outputing 1600x1200 .