PGEN Switch

pGen
General
Author	Cpasjuste
Type	Console
Version	6.6
License	GPL-3.0
Last Updated	2022/08/30
Links
Download
Website
Source

pGEN: Portable Genesis is a Sega Genesis emulator, multiplatform port of Genesis Plus GX.

The main goals of this Genesis-Plus-GX port are:

• Have a basic but user-friendly user interface on non Windows devices.
• Use a recent rendering interface for speed and effects support.
• Cross-platform and code portability.
• Easy updates of genesis-plus-gx core (no modifications to the original sources).

Features

• Support save states.
• Support 2x, 3x, fit, fit 4/3 and fullscreen hardware scaling.
• Support hardware filtering (shaders).

Installation

Copy "pgen.nro" to "/switch/pgen/" directory on SD card.

Place your roms to the following location:

• gamegear roms - "/switch/pgen/gamegear/".
• megadrive roms - "/switch/pgen/megadrive/".
• master system roms - "/switch/pgen/sms/".
• mega-cd roms (unzipped cue/bin) "/switch/pgen/megacd/".

You need to put sega bios in the "pgen/bios" directory:

• ggenie.bin
• areplay.bin
• sk.bin
• sk2chip.bin
• bios_CD_U.bin
• bios_CD_E.bin
• bios_CD_J.bin
• bios_MD.bin
• bios_U.sms
• bios_E.sms
• bios_J.sms
• bios.gg

User guide

Romset

The pGEN database (for infos and medias) is built against these no-intro sets:

• No-Intro - Sega - Mega Drive - Genesis (2017-03-18).zip
• No-Intro - Sega - Game Gear (20210519).zip
• No-Intro - Sega - Master System - Mark III (2017-04-14).zip
• [REDUMP] Disc Image Collection: Sega - Sega Mega CD updated 2021-01-08 (20-42-03)

Preview images and videos

pGEN support preview images and videos (put files in roms media folder):

• png files location - "roms/media/mixrbv2/"
• mp4 files location - "roms/media/video/"

Replace "roms" with the system roms path.

You can download full-set mixrbv2 and video packages in the readme.

Other versions

• Rebuild versions by nosekefik - Recompiled pGEN / pNES / pFBNeo / pSNES with the latest libnx for FW 16.0.2 (2023/05/08).

Controls

L - (In rom list) Configure main options and default roms options

R - (In rom list) Configure per rom options

L+R - (When in emulation) Bring the options menu

Changelog

6.6

• Common: fix adding favorites in some cases.
• Common: revert roms paths to default if not available.

6.5

• pGEN: fix hidden roms when file extension len is 2 (switch/vita/ps4).
• Vita: fix fps counter.
• pGEN: fix sram loading.
• Common: disable config overwrite by default.
• Input: fix inputs not always cleared before processing.
• pGEN: fix emulation for roms size > 8MB.
• pNES: remove load_archive hacks (use libarchive).
• pNES: use 0ldsk00l repo.
• Linux: hopefully fix missing shared libaries.

6.4

• pGEN: check for missing mega-cd bios on loading.
• pGEN: save per game mega-cd backup ram.
• pGEN: fix state saving (vita).
• pGEN: fix scd_bram_cart.brm size.
• pGEN: add sram saving support.
• pSNES: remove deprecated high res option.
• pSNES: add AUDIO_SYNC option (on: perfect audio, off: minor audio stuttering in favor of fps).
• Vita: add more optimisations flags (improve fps).
• Vita: add WAIT_RENDERING option (improve fps but not working with effects).
• Common: fix wrong keys assignment in help bar (hopefully).
• Common: improve audio handling.

6.3

• pFBNeo: support latest fbneo core (eda8ae4).
• pFBNeo: update arcade gamelist.xml.
• pSNES: fix missing game in gamelist (Elfaria - The Isle of the Blest (Japan).zip).
• Common: fix video snap delay option.
• pGEN: fix gamegear resolution and centering.
• pGEN: add unknown files to correct system.
• pGEN: add mega-cd chd support.
• Common: use rom filepath hash for unknown roms id (fix very slow roms discovery).
• pGEN: do not add mega-cd bin files to roms listing.
• pSNES: create saves directory on startup.

6.2

• sdl2_audio: fill buffer with silence if nothing to play (fix pnes audio crap on game start).
• pSNES: fix audio buffer overlflow (fix random crashes).
• pSNES: fix minor remaining audio crackling (perfect audio now, hopefully).
• pSNES: improve/simplify rendering code.
• pSNES: update to latest snes9x revision (8c0a4a4).
• Windows: fix crackling audio.
• Gamelist: fix game id calculation (random crashes on unknown roms).
• Windows: fix pnes compilation.

6.1

• Windows: hopefully fix missing libcrypto-1_1-x64.dll.
• pGEN: fix launchers icons.
• Vita: fix setTextureRect texture pitch (fix pgen).
• pGEN: fix roms directories creation on first run.

6.0

• Common: add new emulator (pgen: genesis-plus-gx port).
• Common: update gamelists.
• Common: fix preview images and videos links.
• Ui: only show know files extensions in rom list.
• Ui: fix favorites preview images and videos.
• Input: add rotation support back (wip).
• Skins: enable font filtering back, remove big_preview skin.
• Skins: add "config.cfg.override" file support for skin overriding.
• Skins: code and data cleanup.
• Skins: improve scaling.
• pSNES: fix crackling audio in some games (zelda, ff6...).
• Vita: remove slow pvr support (fix framerate on a lot of games).
• Vita: fix input rotation (wip).
• Switch: refactor inputs (use sdl2 gamecontroller and new sdl2 automatic single joycons handling).
• Switch: update buttons gfx.
• Windows: fix compilation, code improvements.
• Android: add android support (wip).
• And more...

5.2

• Common: fix audio sync (50hz roms in pSNES/pNES and a few games like seiken densetsu 3).
• Common(skins): make menu text outline bigger.
• Common(skins): fix fonts vertical positions.
• Common: fix font padding and outline position.
• Common: update gamelists (move to emulationstation format, lower memory usage).
• pFBNeo: fix some games detected as clones (X-Men - Konami, ...).
• Switch (pNES/pSNES): update romlist help texture.
• Switch: fix single joycon mode for new c2d input (thanks R-YaTian).
• Linux: add buttons gfx, enable some joystick buttons (wip).
• Common: general improvements to enhance the user's experience...

5.1

• pNES: update gamelist.xml.
• pNES: fix paths (for NstDatabase.xml, etc...).
• pNES: always force audio sync.
• pNES: use romfs for NstDatabase.xml.
• pNES: update nestopia to latest git revision (c103378).
• pNES: fix states menu.
• pNES (ps4): fix datadir.
• pNES/pSNES: disable auto aspect ratio scaling mode.
• pNES/pSNES: improve scaling.

5.0

• FBNeo: bump core to git rev e44cd75.
• FBNeo: add system switch with fire buttons 5-6 (L/R).
• Input: add menu1 and menu2 keys config option.
• Update all databases.
• Add crt-geom-flat (for selected systems).
• Add ps4 support.
• Many changes...

4.4

• pNES: update for latest pemu changes.
• pFBN: add nes console support.
• pFBN: update FBNeo core to commit 89f2b6d.
• All: add "big_preview" skin.
• All: romlist: fix lower/upper cases sorting.
• All: romlist: don't filter on file extension, show any files in roms folder.
• All: load previews from default folders even if the game do not exist in database ("media/mixrbv2/.png", "media/video/.mp4").
• All: add "no preview" image when no preview found.
• All: add a few effects to preview images/videos.
• All: further improvements to overall system stability and other minor adjustments have been made to enhance the user experience.

3.4

• Fix uppercase roms not detected.

3.1

• Skins: use zipped skins (put zipped skins in "skins" directory).
• Skins: add skin selection to main options menu.
• Skins: change "skin" path to "skins".
• Skins: change "ROM_ITEM" name/type to "TEXT".
• Skins: add "color_missing", "color_not_working" and "highlight_use_text_color" options to "ROM_LIST > TEXT" skin config.
• Options menu: set states options menu at the first place, for easier in game access.
• States menu: fix bug to return to main menu with back button.
• States: allow loading a rom with it's state from the main rom menu.
• States menu: add tween position for a better effect.
• Switch: input: use joystick click/press for either start (left joycon) or select (right joycon) on single joycon mode.

Credits

Thanks:

• ScHlAuChi.
• devkitPro and libnx people: yellows8, plutoo, profi200, WntrMute ....
• ScHlAuChi again.

External links

• GitHub - https://github.com/Cpasjuste/pemu/tree/master/pgen