Super Famicom / Super Nintendo Entertainment System

From Retro Modding Wiki
Jump to: navigation, search

The Super Famicom (SFC) is the second major Nintendo home console. It is also known as the Super Nintendo Entertainment System (SNES) in the United States.


Original "fat" model

The original model of the Super Nintendo Entertainment System (SNES) is often referred to as the "fat" model because of its larger size (by comparison to the later Junior model). However, there are two main revisions that share the same case. The original is the 2-chip version, a reference to the fact that the GPU and CPU are separate chips in this version. It is known to have blurry video by comparison to the later 1-chip models. However, it has better compatibility with games. These models support RF, composite, s-video, and RGBs output with no modifications.

1-chip "fat" model

The first 1-chip models are visually identical to the 2-chip models. Internally, however, there are actually a few different revisions, easily identified by looking at the circuit board. Most notably, all 1-chip systems have consolidated the CPU and GPU into a single chip. The blurring present on 2-chip systems is eliminated, but the consolidation causes slight compatibility issues with certain games. These systems also exhibit some amount of ghosting that can be eliminated by performing a very simple modification (see Mods below).

Models with 1CHIP-01 and 1CHIP-02 support all the same video output options as the original system. 1CHIP-03 systems support all the same video output options except that RGB no longer uses c-sync. You can still get RGB with no modification by using luma for sync, but you can also simply add back in the components that were removed to restore c-sync.


The Junior system is also a 1-chip system that some argue has the sharpest video output of all SNES versions. However, it only supports composite video output. Fortunately, it still has an RGB encoder, so you can perform a fairly simple modification to add both s-video and RGBs output to the console.

Best Possible Connection

Stock & Modded

RGB Scart

Known issues and quirks

  • All revisions of the SNES are known to have somewhat unstable sync. This causes some TVs not to accept the signal, particularly when used with the OSSC. See mods below for more info.