RetroArch Snes9x 2005 Plus Core: Options, Controls and Supported Features

Snes9x 2005 Plus is a Nintendo SNES / Famicom core for RetroArch. According to the official libretro documentation, it is a port of SNES9x 1.43 for libretro and was previously called CAT SFC. The core is compiled with Blargg's APU, described in the documentation as an accurate audio processing unit, and the documentation states it provides more favorable performance thresholds.

What This Reference Covers

The documentable surface for this core is narrow and specific: an origin and build note (SNES9x 1.43 port, formerly CAT SFC, Blargg's APU build), a per-feature support table in which every RetroArch capability is marked supported or unsupported, and a confirmation that Core Options, Controls and Remapping are available. Everything below maps one-to-one onto those documented statements.

Background and Build Characteristics

The core is a libretro port of SNES9x 1.43 and was previously known as CAT SFC. It has been compiled with Blargg's APU, which the documentation describes as an accurate audio processing unit. The documentation also states that it provides more favorable performance thresholds; this is a documented characterization rather than a benchmark, and measured results depend on host hardware and are not detailed in the source.

The version anchor matters when choosing between Snes9x family cores: this core is tied to SNES9x 1.43, not to later upstream SNES9x releases. The Blargg's APU note is a build detail that speaks only to the audio processing unit compiled into this version.

Supported Features

The official documentation includes a feature support table. The following features are listed as supported by the Snes9x 2005 Plus core.

• Supported features:
• - Restart
• - Screenshots
• - Saves
• - States
• - Rewind
• - Netplay
• - Core Options
• - Memory Monitoring (achievements)
• - RetroArch Cheats
• - Controls
• - Remapping
• - Softpatching

Save and State Systems

Saves and States are both listed as supported, so the core can use the standard in-game save mechanism and the emulator state mechanism. Restart is also supported, which lets a session return to the beginning of the current content. Because States and Rewind are separately supported, each remains a distinct documented capability rather than being folded together.

Capture, Cheats and Memory Monitoring

Screenshots are supported. RetroArch Cheats are supported, while Native Cheats are not; the documented split is between the host's cheat facility and the core's own, and only the former is listed as available. Memory Monitoring for achievements is listed as supported.

Netplay

Netplay is listed as a supported feature, so the documentation places networked multiplayer within this core's capability set. No netplay configuration or performance figures are given in the available excerpt.

Softpatching and Disk Control

Softpatching is listed as supported, while Disk Control is not. The documentation confirms the softpatching capability, but it does not state any causal link between the two rows; the supported status of softpatching does not establish that disk-based content switching is available.

Core Options, Controls and Remapping

Core Options, Controls and Remapping are all listed as supported, so users can adjust core-specific settings and input mappings. The documentation provides a support flag for each but does not enumerate individual core options or detailed control mappings in the available excerpt.

Controls and Remapping are separate rows in the documentation's table, so the excerpt confirms both are available without describing how each behaves. No default button layout is given.

Documented Limitations

The official documentation lists the following features as not supported by the Snes9x 2005 Plus core: Native Cheats, Multi-Mouse, Rumble, Sensors, Camera, Location, Subsystem, Disk Control, Username, Language, Crop Overscan, and LEDs.

The unsupported rows fall into a few documented groups. Input and hardware passthrough features, including Multi-Mouse, Rumble, Sensors and Camera, are not available. Host identity and display helpers, including Username, Language, Crop Overscan and LEDs, are not available. Subsystem, Disk Control and Native Cheats are likewise not listed as supported.

How the Feature Table Informs Core Choice

The table answers specific selection questions. If you need host-level cheat entry, RetroArch Cheats is supported and Native Cheats is not, so the documented entry point is the host facility. If you need softpatches, that capability is supported. If multiplayer uses Netplay, it is listed as supported. Conversely, a setup that depends on Disk Control, a Subsystem, or rumble/sensor/camera input is outside what this core lists as supported.

The background note narrows the choice further: this is the SNES9x 1.43 lineage built with Blargg's APU, and the documentation characterizes it as having more favorable performance thresholds. The source does not compare specific titles, frame rates or accuracy results against other members of the Snes9x family.

What the Documentation Does Not Specify

The available excerpt does not enumerate individual core option names, defaults, control mappings, netplay parameters, expected frame rates, or per-game compatibility results. It provides support flags and a background note. Verification of specific behavior belongs to hands-on testing, which this source summary does not claim to replace.