emulator: Caprice32
type: standalone + libretro
core_classification: community_fork
source: "https://github.com/libretro/libretro-cap32"
upstream: "https://github.com/ColinPitrat/caprice32"
profiled_date: "2026-10-06"
source_commit: "c23855092f5f49981a5096f4d39033ff573ebca7"
upstream_commit: "6c12c4c92360065cdc229ac9ada7551f941436b8"
core_version: "v4.2.0"
display_name: "Amstrad - CPC/GX4000 (Caprice32)"
cores:
  - cap32
  - caprice32
systems:
  - amstrad-cpc

notes: |
  Caprice32 is an Amstrad CPC emulator ported to libretro. Supports CPC 464,
  CPC 464 with DDI-1 disc interface, CPC 664, CPC 6128, and CPC+ (Plus) models.

  All system ROMs are compiled directly into the core binary as C header
  arrays in cap32/rom/*.h. No external BIOS files are required.

  Embedded ROMs (cap32/cap32.c:345-349, cap32/slots.c:33):
    - cap32/rom/464.h:    OS464_BASIC10[32768]  - CPC 464 OS + BASIC 1.0
    - cap32/rom/664.h:    OS664_BASIC664[32768] - CPC 664 OS + BASIC 1.1
    - cap32/rom/6128.h:   OS_BASIC11[32768]     - CPC 6128 OS + BASIC 1.1
    - cap32/rom/amsdos.h: AMSDOS[16384]         - AMSDOS disc ROM
    - cap32/rom/6128p.h:  OS_6128P[65580]       - CPC+ system cartridge
    - cap32/rom/cpm.h:    CPM, CPM_SYS          - CP/M boot memory dumps

  ROM selection in emulator_select_ROM() (cap32/cap32.c:1082-1114):
    - CPC 464:     OS464_BASIC10
    - CPC 464DDI:  OS464_BASIC10 + AMSDOS in slot 7
    - CPC 664:     OS664_BASIC664 + AMSDOS in slot 7
    - CPC 6128:    OS_BASIC11 + AMSDOS in slot 7
    - CPC+:        OS_6128P loaded as system cartridge via cpr_load()

  Core option "cap32_model" accepts "464DDI" (libretro/libretro-core.c:501,
  libretro/libretro-core.c:1035). A 464 loading disc content is switched to
  464DDI (libretro/libretro-core.c:1364-1368).

  The array chROMFile names "cpc464.rom", "cpc664.rom", "cpc6128.rom"
  (cap32/cap32.c:353-357) and loadConfiguration() parses the rom_path,
  slotNN and rom_mf2 keys of ./cap32.cfg (cap32/cap32.c:1846-1863), but no
  code opens these files. The system directory is resolved in
  libretro/libretro-core.c:1617-1636 under a "TODO: future use to load
  custom bios" comment and no ROM is read from it.

  Keyboard layout patches are applied to the ROM in memory for French
  and Spanish layouts via rom_mods.h (cap32/cap32.c:1116-1141).

  CP/M support assembles a 128KB snapshot from the CPM and CPM_SYS arrays
  and loads it via snapshot_load_mem() in cap32/slots.c:71-90.

files:
  # Standalone loads from rom_path/; libretro embeds all as C arrays
  - name: cpc464.rom
    system: amstrad-cpc
    required: false
    mode: standalone
    size: 32768
    md5: a993f85b88ac4350cf4d41554e87fe4f
    sha1: 56d39c463da60968d93e58b4ba0e675829412a20
    note: "CPC 464 OS + BASIC 1.0, read when model=0"
    source_ref: "src/cap32.cpp:212-217, src/cap32.cpp:1013-1027, rom/cpc464.rom"
  - name: cpc664.rom
    system: amstrad-cpc
    required: false
    mode: standalone
    size: 32768
    md5: 5a384a2310f472c7857888371c00ed66
    sha1: 073a7665527b5bd8a148747a3947dbd3328682c8
    note: "CPC 664 OS + BASIC 1.1, read when model=1"
    source_ref: "src/cap32.cpp:212-217, src/cap32.cpp:1013-1027, rom/cpc664.rom"
  - name: cpc6128.rom
    system: amstrad-cpc
    required: true
    mode: standalone
    size: 32768
    md5: b96280dc6c95a48857b4b8eb931533ae
    sha1: 5977adbad3f7c1e0e082cd02fe76a700d9860c30
    note: "CPC 6128 OS + BASIC 1.1, default model=2; missing file returns ERR_CPC_ROM_MISSING"
    source_ref: "src/cap32.cpp:212-217, src/cap32.cpp:1013-1027, src/cap32.cpp:1799, rom/cpc6128.rom"
  - name: amsdos.rom
    system: amstrad-cpc
    required: false
    mode: standalone
    size: 16384
    md5: 25629dfe870d097469c217b95fdc1c95
    sha1: 39102c8e9cb55fcc0b9b62098780ed4a3cb6a4bb
    note: "AMSDOS disc ROM, shipped cap32.cfg sets slot07=DEFAULT, skipped on the 464; missing file clears the slot"
    source_ref: "src/cap32.cpp:1170-1178, src/cap32.cpp:1245-1249, cap32.cfg:215, rom/amsdos.rom"
  - name: system.cpr
    system: amstrad-cpc
    required: false
    mode: standalone
    size: 131156
    md5: 39b565e648172980aa552293e667070f
    sha1: 405e341437fab8db477606238af0c20eca2e39ee
    note: "CPC+ system cartridge, default cartridge path"
    source_ref: "src/cap32.cpp:1904, src/cap32.cpp:1150, rom/system.cpr"
  - name: MF2.rom
    system: amstrad-cpc
    required: false
    mode: standalone
    size: 8192
    md5: 4c9f014e91d407cc6509fad0095ab909
    sha1: 1431ec628d38f000715545dd2186b684c5fe5a6f
    note: "Multiface 2 ROM, read when mf2=1; checks the \"MULTIFACE 2\" signature at 0x0d32"
    source_ref: "src/cap32.cpp:1252-1278, rom/MF2.rom"

platform_details:
  bios_mapping:
    source_ref: "cap32/cap32.c:1082-1114, cap32/cap32.c:345-349"
    note: |
      All ROMs are embedded. emulator_select_ROM() copies the ROM array for
      CPC.model into pbROM. No filesystem lookup occurs in the libretro
      port; retro_system_bios_directory is set in
      libretro/libretro-core.c:1617-1636 and no ROM is read from it.

  embedded_roms:
    source_ref: "cap32/rom/464.h, cap32/rom/664.h, cap32/rom/6128.h, cap32/rom/amsdos.h, cap32/rom/6128p.h, cap32/rom/cpm.h"
    note: |
      6 headers embedded as C arrays:
      OS464_BASIC10 (32KB)  - CPC 464 OS + BASIC 1.0, sha1 56d39c463da60968d93e58b4ba0e675829412a20
      OS664_BASIC664 (32KB) - CPC 664 OS + BASIC 1.1, sha1 073a7665527b5bd8a148747a3947dbd3328682c8
      OS_BASIC11 (32KB)     - CPC 6128 OS + BASIC 1.1, sha1 5977adbad3f7c1e0e082cd02fe76a700d9860c30
      AMSDOS (16KB)         - disc ROM mapped to slot 7, sha1 39102c8e9cb55fcc0b9b62098780ed4a3cb6a4bb
      OS_6128P (65580 B)    - CPC+ system cartridge
      CPM, CPM_SYS          - CP/M memory dumps assembled into a 128KB snapshot

  model_rom_map:
    source_ref: "cap32/cap32.c:1082-1114"
    note: |
      CPC 464:     OS464_BASIC10 only
      CPC 464DDI:  OS464_BASIC10 + AMSDOS in ROM slot 7
      CPC 664:     OS664_BASIC664 + AMSDOS in ROM slot 7
      CPC 6128:    OS_BASIC11 + AMSDOS in ROM slot 7
      CPC+:        6128P system cartridge (or user-provided .cpr file)