emulator: "ParaLLEl N64"
type: libretro
core_classification: community_fork
source: "https://github.com/libretro/parallel-n64"
upstream: "https://github.com/mupen64plus/mupen64plus-core"
profiled_date: "2026-03-24"
core_version: "2.0-rc2"
display_name: "Nintendo - Nintendo 64 (ParaLLEl N64)"
systems: [nintendo-64, nintendo-64dd]
cores: [parallel_n64, parallel_n64_debug]

files:
  - name: "64DD_IPL.bin"
    path: "64DD_IPL.bin"
    required: false
    description: "64DD IPL ROM"
    note: "Only loaded when a 64DD disk image (.ndd) is present via subsystem API. Core fails to load disk games without it."
    source_ref: "libretro/libretro.c:576-623"

notes:
  hle_available: true
  hle_note: >
    PIF boot ROM is fully HLE'd (pifbootrom/pifbootrom.c:57). CIC
    challenge/response handled in software (n64_cic_nus_6105.c). No BIOS
    files needed for standard cartridge games.
  dd_note: >
    64DD IPL ROM loaded from system_dir/64DD_IPL.bin when disk_data is
    present. Loaded via fopen with no hash or size validation.
  divergence_note: >
    Fork of mupen64plus-core with significant divergence. Includes legacy
    GPU plugins (Glide64, glN64, Rice, angrylion) and ParaLLEl-RDP/RSP.
    Uses flat path 64DD_IPL.bin unlike mupen64plus-next which uses
    Mupen64plus/IPL.n64 subdirectory.