bbbradsmith / fceux

FCEUX, a NES Emulator (personal development fork)

fceux

An open source NES Emulator for Windows and Unix that features solid emulation accuracy and state of the art tools for power users. For some reason casual gamers use it too.

Builds and Releases

Interim builds:

• Win32: fceux-win32.zip
• Win64: fceux-win64.zip
• Win64 Qt/SDL: fceux-win64-QtSDL.zip
• Ubuntu: fceux-ubuntu-x64.deb
• MacOSX: fceux-Darwin.dmg
• Status: Appveyor

But you might like mesen more: https://github.com/SourMesen/Mesen

You should get releases from here: https://sourceforge.net/projects/fceultra/files/

That's because github forces us to use tags we don't have for releases.

2.6.5 is the most recent release but most people are using the autobuilds.

fceux's Issues

WRAM and RAM init option

Created a branch to work on this: https://github.com/bbbradsmith/fceux/tree/wram_initialization

Originally described here: https://sourceforge.net/p/fceultra/bugs/749/

I created an itialization option for NES internal RAM in r3275 and it seems that it should apply to WRAM for the same reason. Unfortunately there's no standard hub for WRAM, every board maintains its own version of it. A lot of them manually initialize it to 0 (redundant to what FCEU_gmalloc already does). Not sure if there are any that don't use FCEU_gmalloc to allocate their WRAM.

Also might apply to nametable VRAM? (seems to get initialized to 0)

A patch for the first part of the solution is attached. The second part would be to evaluate all the WRAM using mappers and clean out their manual instances of FCEU_dwmemset, memset, etc.

I didn't want to check in the first part (even though it does not change any behaviour with the default setting), until I've had more time to review what all the boards are doing. Created this ticket to remind me to do it later when I have some time and patience for that. (Or someone else can take it up if they're interested.)

Debugger tweaks

Nametable viewer: add numerical scroll position display, fix negative scroll (common! e.g. TMNT title screen / sewer)

Add "now" button to PPU/Nametable displays? (for updating while paused) or maybe an "update when paused"?

Stepping debugger (or hitting breakpoint) needs to refresh watch.

Symbolic offsets instead of manual addresses as an option for entry and/or automatic reload and readjust? (Maybe even symbol + offset?)

Using turbo while recording AVI turbos the audio?

If you use the "turbo" feature to fast forward a game while recording an AVI, all of the frames of video get recorded correctly, but the audio will be unusable (fast-forwarded / garbled / truncated).

https://sourceforge.net/p/fceultra/bugs/696/

Mapper 30 mirroring settings?

Black Box Challenge doesn't run correctly without the 4-screen ability.

NTSCx2 filter doesn't produce emphasis?

Is it even a filter?

Location of the sourceforge history:

This isn't an issue, I just wanted a place to keep this around for reference, like when I can't understand the new mangled github history and want to know who did stuff:

https://sourceforge.net/p/fceultra/code/3396/tree/

Audio crackles when using vsync?