emulator: "VICE x64sc"
type: libretro
core_classification: community_fork
source: "https://github.com/libretro/vice-libretro"
upstream: "https://sourceforge.net/projects/vice-emu/"
profiled_date: "2026-03-25"
core_version: "3.10"
display_name: "Commodore - C64 (VICE x64sc, accurate)"
cores: [vice_x64sc]
systems: [commodore-c64]
notes: >
  Cycle-accurate C64 emulator using the viciisc VIC-II implementation.
  System ROMs embedded in binary: C64 BASIC (901226-01), chargen (901225-01),
  chargen Japanese (906143-02), kernal Rev 3 (901227-03), kernal GS (390852-01),
  kernal SX-64 (251104-04), kernal 4064 (901246-01), kernal Japanese (906145-02),
  plus all drive ROMs (1540, 1541, 1541-II, 1551, 1570, 1571, 1571CR, 1581, 1001,
  2031, 2040, 3040, 4040, 9000) and VIC-II palettes. Embedded ROM check in
  sysfile_load takes priority over filesystem. Kernal Rev 1 (901227-01) and
  Rev 2 (901227-02) are NOT embedded; selecting C64 OLD NTSC or C64 OLD PAL model
  requires them on the filesystem in system/vice/C64/. JiffyDOS requires True Drive
  Emulation enabled and a 1541/1571/1581 drive type. SX-64 models use a separate
  JiffyDOS kernal (JiffyDOS_SX-64.bin) not declared in the .info.

files:
  - name: "JiffyDOS_C64.bin"
    description: "JiffyDOS C64 kernal replacement"
    required: false
    source_ref: "retrodep/ui.c:302-303"
    note: "Loaded into KernalName when vice_jiffydos option is enabled (non-SX64 models)."

  - name: "JiffyDOS_SX-64.bin"
    description: "JiffyDOS SX-64 kernal replacement"
    required: false
    source_ref: "retrodep/ui.c:295-296"
    note: "Loaded into KernalName when vice_jiffydos option is enabled and SX-64 model selected."

  - name: "JiffyDOS_1541-II.bin"
    description: "JiffyDOS 1541-II drive DOS replacement"
    required: false
    source_ref: "retrodep/ui.c:283-284"
    note: "Loaded into DosName1541ii when vice_jiffydos option is enabled."

  - name: "JiffyDOS_1571_repl310654.bin"
    description: "JiffyDOS 1571 drive DOS replacement"
    required: false
    source_ref: "retrodep/ui.c:285-286"
    note: "Loaded into DosName1571 when vice_jiffydos option is enabled."

  - name: "JiffyDOS_1581.bin"
    description: "JiffyDOS 1581 drive DOS replacement"
    required: false
    source_ref: "retrodep/ui.c:287-288"
    note: "Loaded into DosName1581 when vice_jiffydos option is enabled."

  - name: "kernal-901227-01.bin"
    description: "C64 Kernal Rev 1"
    required: false
    size: 8192
    validation: [size]
    source_ref: "vice/src/c64/c64-resources.c:253, vice/src/c64/c64scmodel.c:141"
    note: "Not embedded. Loaded via sysfile from system/vice/C64/ when C64 OLD NTSC model selected."

  - name: "kernal-901227-02.bin"
    description: "C64 Kernal Rev 2"
    required: false
    size: 8192
    validation: [size]
    source_ref: "vice/src/c64/c64-resources.c:254, vice/src/c64/c64scmodel.c:123"
    note: "Not embedded. Loaded via sysfile from system/vice/C64/ when C64 OLD PAL model selected."