The Super Nintendo (and Super Famicom) had many motherboard revisions, each outputting different video quality. This video aims to clear up many misconceptions about when that quality difference matters, as well as showcase some mods to make ALL revisions output perfect RGB video!
Here’s links to things I showed:
SNES Info & Cables: https://www.retrorgb.com/snes.html
SNES Transparent Shells: https://retrorgb.link/clearsnes
Super Famicom Transparent Shells: https://retrorgb.link/clearsfc
Basic SNES Restoration Tips: https://www.retrorgb.com/restoring-a-super-nintendo.html
Voultar RGB Bypass: https://voultar.com/
SNES Motherboard Rev’s: https://consolemods.org/wiki/SNES:SNES_Model_Differences
Retro Castle MiSTer Kit: https://retrorgb.link/retrocastle
T-Shirts: https://www.retrorgb.com/store.html
All equipment used to shoot this video can be found here: https://www.amazon.com/shop/retrorgb
In the video, I demonstrated the OSSC’s “reverse low-pass filter” and how it can sharpen the 2-CHIP’s image at the cost of highlighting the interference you’d get from those motherboard revisions. The RetroTINK 5x can accomplish the exact same thing by opening the menu and going to Post Processing \ Pre-emph. Here’s some screenshots demonstrating the difference between a 2-CHIP connected via RGB SCART cables, outputting 1080p (Over). Adding the Pre-emph sharpens the image, but as with the OSSC (and all other external solutions), you’ll also sharpen the noise, making it more noticeable. I suggest trying it, as it may look better for certain games, however using 2-CHIP’s with RGB might just be best used in Generic mode.
It’s my opinion that if you’d like to mask the “messiness” of the 2-CHIP, you’d want to consider adding CRT emulation along with the Pre-emph filter. Here’s the same comparison as above, but with scanline and mask emulation (the exact settings are in the screenshots). I think overall, while sitting at a normal viewing distance, taking advantage of the RT5x’s amazing CRT emulation is the best solution for unmodded 2-CHIP’s. Click on both pictures to get a full-sized view:
If you’d like more information on how to fix the 1CHIP’s “white line issue”, please check out this very old (but still accurate) video I did years ago:
