CHANGELOG

Famicom Disk System support with limitations, additional mapper improvements, and native PAL/Dendy frame rates on RP2350 boards.

General Info

Binaries for each configuration and PCB design are at the end of this page.

Click here for tested configurations.

See setup section in readme how to install and wire up

v0.39

Features:

• Famicom Disk System (.fds) support on RP2350 boards with PSRAM (with limitations—see #192, #193, #194, #195). Requires a BIOS file at /bios/fds-bios.rom. Disk swapping is done via the settings menu (SELECT+START).
• Added "reset game" option to the in-game settings menu.
• Removed unused 360 folder from metadata.

Fixes

Regional Support:

• PAL/Dendy games now run at the correct frame rate on RP2350 boards (50Hz instead of 60Hz). RP2040 boards still run PAL/Dendy at 60Hz due to hardware constraints.

Mapper & Game-Specific Fixes:

• Mapper 85 now supported (tested with Tiny Toon Adventures 2 JP, Lagrange Point JP). Note: expansion audio for Mapper 85 is not yet emulated.
• Akumajou Special: Boku Dracula-kun (Mapper 23) - fixed black screen issue.
• Gimmick! (JP) - fixed black playfield after pressing Start.
• Robocop 3 (USA) - fixed black screen on startup (Mapper 1 fix).
• Castlevania III US (Mapper 5) and Castlevania III JP (Mapper 24) - fixed sound effects cutting out mid-level.
• Akumajou Densetsu (Castlevania III JP) - fixed graphical glitches in intro screen.
• Galaxian (JP) - fixed handling of incorrect ROM header info.
• Battletoads - Double Dragon - fixed missing sound effects.
• Double Dragon - partial fix for sound glitch.
• Added Sunsoft 5B expansion audio emulation for Mapper 69 (Gimmick!, Hebereke).

Performance & Stability:

• Fixed stack overflow when sorting large directory contents.
• Removed 40K fixed buffer used for Mapper 235 from heap memory.
• DVI mode: added watchdog function on core 1 to recover from occasional signal drops

Adafruit Fruit Jam:

• Headphone detection now works correctly; plugging in headphones automatically mutes the speaker.
• External audio setting now enables the Fruit Jam's built-in speaker.

previous changes

See HISTORY.md

Downloads by configuration

Binaries for each configuration are listed below. Binaries for Pico(2) also work for Pico(2)-w. No blinking led however on the -w boards.
For some configurations risc-v binaries are available. It is recommended however to use the arm binaries.

Standalone boards

Breadboard

PCB Pico/Pico2

PCB pico_nesPCB_v2.1.zip

3D-printed case designs for PCB:

https://www.thingiverse.com/thing:6689537.
For the latest two player PCB 2.0, you need:

• Top_v2.0_with_Bootsel_Button.stl. This allows for software upgrades without removing the cover. (*)
• Base_v2.0.stl
• Power_Switch.stl.
  (*) in case you don't want to access the bootsel button on the Pico, you can choose Top_v2.0.stl

PCB WS2XX0-Zero (PCB required)

PCB: Gerber_PicoNES_Mini_PCB_v2.0.zip

3D-printed case designs for PCB WS2XX0-Zero:
https://www.thingiverse.com/thing:7041536

PCB Waveshare RP2350-USBA with PCB

Binary

PCB: Gerber_PicoNES_Micro_v1.2.zip

Readme

Build guide

Pimoroni Pico DV

SpotPear HDMI

For more info about the SpotPear HDMI see this page : https://spotpear.com/index/product/detail/id/1207.html and https://spotpear.com/index/study/detail/id/971.html

The easiest way to set this up is using an expander board like this: https://shop.pimoroni.com/products/pico-omnibus?variant=32369533321299

See also #127

Murmulator M1

For more info about the Murmulator see this website: https://murmulator.ru/ and #150

Murmulator M2

For more info about the Murmulator see this website: https://murmulator.ru/ and #150

Other downloads

• Metadata: PicoNesMetadata.zip

Extract the zip file to the root folder of the SD card. Select a game in the menu and press START to show more information and box art. Works for most official released games. Screensaver shows floating random cover art.