emulator: "n64emu"
type: libretro
core_classification: enhanced_fork
source: "https://git.libretro.com/libretro/n64emu"
profiled_date: "2026-11-09"
source_commit: "c9da0acadaebe9bbfa4cf2b5662f2af7252988a3"
core_version: "0.01"
version_basis:
  kind: file
  path: "src/libretro.c"
  pattern: 'info->library_version\s*=\s*"([^"]+)"'
display_name: "Nintendo - Nintendo 64 (n64emu)"
cores:
  - "n64emu"
systems:
  - nintendo-64
  - nintendo-64dd

notes: |
  Started in 2022 by mudlord from a copy of parallel-n64, imported without its
  git history, and rewritten since: cycle-based CPU and RSP JITs, RSP HLE per
  task with LLE fallback, GL, D3D, SoftRDP and paraLLEl-RDP backends.
  The PIF boot ROM is high-level emulated, so cartridges need no file
  (src/device/pif.c:35).
  The 64DD IPL is the only file read from the system directory. A disk loaded
  through the "N64 Disk Drive" subsystem with no IPL as second content looks for
  IPL.n64, then 64DD_IPL.bin, at the root of the system directory and rejects
  the load when neither passes the check (src/libretro.c:309-343). A disk found
  as a .ndd sidecar of a cartridge reads IPL.n64 only, and a missing or
  unrecognised IPL disables the 64DD while the cartridge still runs
  (src/main/main.c:303-372). The IPL is accepted in Z64, N64 and V64 byte order.
  Transfer Pak Game Boy ROM and save come from subsystem content or from .gb and
  .sav sidecars of the cartridge (src/libretro.c:633-636).

files:
  - name: "IPL.n64"
    aliases: ["64DD_IPL.bin"]
    path: "IPL.n64"
    system: nintendo-64dd
    required: true
    min_size: 4096
    max_size: 4194304
    validation: [size]
    description: "Nintendo 64DD IPL ROM"
    note: "Size between 0x1000 and 0x400000 bytes, a multiple of 4, and a first word of 80270740 in one of the three byte orders. 64DD_IPL.bin is tried second by the subsystem path only."
    source_ref: "src/libretro.c:259-271, 314-331"