Best quality/compatibility obtained with XRGB-Mini
- You will also need something like the UMSA (VGA to SCART adapter)
- Changing the A/D setting of the XRGB greatly reduces video noise. 133 seems to work well but try others.
- Disabling scandoublers, if supported by a core, tends to improve image and color quality.
- Make sure to get a European SCART connector for the upscaler, as it ships with a JP21 connector not compatible with UMSA.
- Cons: it's a rather expensive solution...
- Cons: only RGBHV will work if you use a UMSA adapter (other adapters might accept RGBS)
- Works for most cores via RGBHV input (you need to switch source to RGBHV)
- Upscales to 1024x768 (to show nicely on big TVs)
- At 640x480 it solves scaling issues seen on many screens, and can be chained to a scanlines generator
- May work for the cores that can output RGBS (not tested)
- Cons: some cores do not work, others appear off-center and aren't playable (see Core status spreadsheet for list)
- Cons: RGBHV 15khz not accepted (probably expects RGBS for it).
I've been looking for ways to connect the MiST to my XRGB Mini upscaler, both to handle 50Hz (PAL) and to capture video on my PC via HDMI.
The upscaler does not have VGA inputs; but I picked up yesterday a cheap noname VGA-to-HDMI converter in my local computer store.
It works... but the VGA box adds significant horizontal noise, so the result seems to come from a wonky VHS tape. Still better than when I recorded console videos with a camcorder pointing at the TV as a kid, though
Interestingly the vertical banding that other posts complain about is not present, which I think suggests the problem is with TV upscalers or their VGA handling.
- MiST FPGA with minimig, NES, and C64 cores
- No-name VGA to HDMI converter (seems to output PAL at 800x600 and NTSC at 640x480)
- XRGB Mini Framemeister (converts 50Hz to 60Hz and upscales to 1280x720p)
- AverMedia ExtremeCap U3 to record video on a PC
Here's a few captures that show how the result (set to 720p for best quality):
minimig core PAL:
minimig core NTSC (skipped to a part that shows the heavy noise from the VGA box on the OSD):
https://www.youtube.com/watch?feature=p ... FVrOM#t=56
NES core on XRGB (1280x720):
NES core direct feed from VGA box (640x480) (my TV stretchs this but not reflected on capture card):
For some reason the C64 core has no sound with the VGA box.
It also has heavy sync issues, so I didn't bother uploading the video.