emulator: "Mupen64Plus (libretro, 2019)"
type: libretro
core_classification: frozen_snapshot
source: "https://github.com/libretro/mupen64plus-libretro"
upstream: "https://github.com/libretro/mupen64plus-libretro"
profiled_date: "2026-10-22"
source_commit: "ab8134ac90a567581df6de4fc427dd67bfad1b17"
core_version: "2.5"
display_name: "Nintendo - Nintendo 64 (Mupen64Plus 2019)"
cores:
  - "mupen64plus_32b"
built_by: [emuelec]
systems:
  - nintendo-64

notes: |
  The libretro Mupen64Plus core before Mupen64Plus-Next replaced it, with
  GLideN64, the cxd4 and hle RSP plugins and a vendored mupen64plus-core in one
  library. The repository is archived and its master stops at this commit.
  EmuELEC builds it for its 32-bit ARM devices and installs the library as
  mupen64plus_32b_libretro.so.
  ref: EmuELEC packages/sx05re/libretro/mupen64plus/package.mk:21-27,72-75

  The core opens no BIOS or firmware. Cartridge boot is simulated: the soft
  reset fills the registers and the RSP memory the CIC x105 check expects and
  jumps straight to IPL3. .ndd is among the accepted extensions, but the
  vendored core carries no 64DD device and asks for no IPL.
  ref: libretro/libretro.c:348, mupen64plus-core/src/r4300/r4300.c:106-159

  Every shared data lookup lands in <system>/Mupen64plus/. On init the core
  creates that directory and writes the ROM database it carries compiled in
  over mupen64plus.ini there, then reads it back, so the file is never
  obtained. GLideN64 applies its compiled-in per ROM overrides, then those of a
  GLideN64.custom.ini in the same directory if one exists. Hi-res texture
  packs are read from the hires_texture directory under it when the
  txHiresEnable option is on. Neither has a canonical artifact.
  ref: custom/mupen64plus-core/api/config.c:1288-1300, libretro/libretro.c:369-395,
       mupen64plus-core/src/main/rom.c:399-408,
       custom/GLideN64/mupenplus/Config_mupenplus.cpp:33-47,
       custom/GLideN64/mupenplus/Config_mupenplus.cpp:158-159,
       custom/GLideN64/mupenplus/CommonAPIImpl_mupenplus.cpp:52-66,
       GLideN64/src/Config.cpp:92-94

  cxd4's rsp_conf.bin is read only by the zilmar variant of update_conf, behind
  #if !defined(M64P_PLUGIN_API), and the Makefile defines that macro.
  ref: custom/mupen64plus-rsp-cxd4/module.c:358-380, Makefile:378

files: []