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feat: profile cap32 at c238550 with the 664 rom
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Abdessamad Derraz committed
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@@ -3,8 +3,9 @@ type: standalone + libretro
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core_classification: community_fork
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source: "https://github.com/libretro/libretro-cap32"
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upstream: "https://github.com/ColinPitrat/caprice32"
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profiled_date: "2026-03-23"
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source_commit: "9171747fe9f36fb3ed9c61f65caaaef4858d49a5"
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profiled_date: "2026-10-06"
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source_commit: "c23855092f5f49981a5096f4d39033ff573ebca7"
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upstream_commit: "6c12c4c92360065cdc229ac9ada7551f941436b8"
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core_version: "v4.2.0"
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display_name: "Amstrad - CPC/GX4000 (Caprice32)"
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cores:
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@@ -15,107 +16,125 @@ systems:
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notes: |
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Caprice32 is an Amstrad CPC emulator ported to libretro. Supports CPC 464,
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CPC 664, CPC 6128, and CPC+ (Plus) models.
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CPC 464 with DDI-1 disc interface, CPC 664, CPC 6128, and CPC+ (Plus) models.
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All system ROMs are compiled directly into the core binary as C header
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arrays in cap32/rom/*.h. No external BIOS files are required.
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Embedded ROMs (cap32/cap32.c:348-351):
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- cap32/rom/464.h: OS_BASIC10[32768] - CPC 464 OS + BASIC 1.0
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- cap32/rom/6128.h: OS_BASIC11[32768] - CPC 6128 OS + BASIC 1.1
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- cap32/rom/amsdos.h: AMSDOS[16384] - AMSDOS disk controller ROM
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- cap32/rom/6128p.h: OS_6128P - CPC+ system cartridge ROM
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- cap32/rom/cpm.h: cpmROM - CP/M boot snapshot (128KB)
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Embedded ROMs (cap32/cap32.c:345-349, cap32/slots.c:33):
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- cap32/rom/464.h: OS464_BASIC10[32768] - CPC 464 OS + BASIC 1.0
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- cap32/rom/664.h: OS664_BASIC664[32768] - CPC 664 OS + BASIC 1.1
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- cap32/rom/6128.h: OS_BASIC11[32768] - CPC 6128 OS + BASIC 1.1
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- cap32/rom/amsdos.h: AMSDOS[16384] - AMSDOS disc ROM
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- cap32/rom/6128p.h: OS_6128P[65580] - CPC+ system cartridge
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- cap32/rom/cpm.h: CPM, CPM_SYS - CP/M boot memory dumps
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ROM selection in emulator_select_ROM() (cap32/cap32.c:1084-1112):
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- CPC 464: OS_BASIC10 (32KB)
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- CPC 664: OS_BASIC10 (32KB) + AMSDOS in slot 7
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- CPC 6128: OS_BASIC11 (32KB) + AMSDOS in slot 7
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- CPC+: OS_6128P loaded as system cartridge via cpr_load()
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ROM selection in emulator_select_ROM() (cap32/cap32.c:1082-1114):
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- CPC 464: OS464_BASIC10
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- CPC 464DDI: OS464_BASIC10 + AMSDOS in slot 7
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- CPC 664: OS664_BASIC664 + AMSDOS in slot 7
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- CPC 6128: OS_BASIC11 + AMSDOS in slot 7
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- CPC+: OS_6128P loaded as system cartridge via cpr_load()
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The standalone (non-libretro) version references external filenames
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cpc464.rom, cpc664.rom, cpc6128.rom, amsdos.rom in cap32/cap32.c:355-358
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via config file loading (cap32/cap32.c:1854-1866), but the libretro port
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does not use this path. The libretro init (libretro/libretro-core.c:1612-1618) has
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a "TODO: future use to load custom bios" comment that is not
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implemented.
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Core option "cap32_model" accepts "464DDI" (libretro/libretro-core.c:501,
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libretro/libretro-core.c:1035). A 464 loading disc content is switched to
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464DDI (libretro/libretro-core.c:1364-1368).
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The array chROMFile names "cpc464.rom", "cpc664.rom", "cpc6128.rom"
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(cap32/cap32.c:353-357) and loadConfiguration() parses the rom_path,
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slotNN and rom_mf2 keys of ./cap32.cfg (cap32/cap32.c:1846-1863), but no
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code opens these files. The system directory is resolved in
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libretro/libretro-core.c:1617-1636 under a "TODO: future use to load
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custom bios" comment and no ROM is read from it.
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Keyboard layout patches are applied to the ROM in memory for French
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and Spanish layouts via rom_mods.h (cap32/cap32.c:1114-1138).
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and Spanish layouts via rom_mods.h (cap32/cap32.c:1116-1141).
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CP/M support loads a pre-built snapshot (cpm.h) into memory via
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snapshot_load_mem() in cap32/slots.c:93.
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CP/M support assembles a 128KB snapshot from the CPM and CPM_SYS arrays
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and loads it via snapshot_load_mem() in cap32/slots.c:71-90.
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files:
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# Standalone loads from rom_path/ — libretro embeds all as C arrays
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# ref: ColinPitrat/caprice32/src/cap32.cpp:1006-1007,1159-1171
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# Standalone loads from rom_path/; libretro embeds all as C arrays
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- name: cpc464.rom
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system: amstrad-cpc
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required: true
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required: false
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mode: standalone
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size: 32768
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note: "CPC 464 OS + BASIC 1.0"
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source_ref: "src/cap32.cpp:214, rom/cpc464.rom"
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md5: a993f85b88ac4350cf4d41554e87fe4f
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sha1: 56d39c463da60968d93e58b4ba0e675829412a20
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note: "CPC 464 OS + BASIC 1.0, read when model=0"
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source_ref: "src/cap32.cpp:212-217, src/cap32.cpp:1013-1027, rom/cpc464.rom"
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- name: cpc664.rom
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system: amstrad-cpc
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required: false
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mode: standalone
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size: 32768
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note: "CPC 664 OS + BASIC 1.0"
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source_ref: "caprice32/rom/cpc664.rom"
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md5: 5a384a2310f472c7857888371c00ed66
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sha1: 073a7665527b5bd8a148747a3947dbd3328682c8
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note: "CPC 664 OS + BASIC 1.1, read when model=1"
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source_ref: "src/cap32.cpp:212-217, src/cap32.cpp:1013-1027, rom/cpc664.rom"
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- name: cpc6128.rom
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system: amstrad-cpc
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required: false
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required: true
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mode: standalone
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size: 32768
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note: "CPC 6128 OS + BASIC 1.1"
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source_ref: "caprice32/rom/cpc6128.rom"
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md5: b96280dc6c95a48857b4b8eb931533ae
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sha1: 5977adbad3f7c1e0e082cd02fe76a700d9860c30
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note: "CPC 6128 OS + BASIC 1.1, default model=2; missing file returns ERR_CPC_ROM_MISSING"
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source_ref: "src/cap32.cpp:212-217, src/cap32.cpp:1013-1027, src/cap32.cpp:1799, rom/cpc6128.rom"
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- name: amsdos.rom
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system: amstrad-cpc
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required: false
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mode: standalone
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size: 16384
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note: "AMSDOS disc ROM (sideways slot 7)"
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source_ref: "src/cap32.cpp:1262"
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md5: 25629dfe870d097469c217b95fdc1c95
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sha1: 39102c8e9cb55fcc0b9b62098780ed4a3cb6a4bb
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note: "AMSDOS disc ROM, shipped cap32.cfg sets slot07=DEFAULT, skipped on the 464; missing file clears the slot"
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source_ref: "src/cap32.cpp:1170-1178, src/cap32.cpp:1245-1249, cap32.cfg:215, rom/amsdos.rom"
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- name: system.cpr
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system: amstrad-cpc
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required: false
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mode: standalone
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size: 131156
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note: "CPC+ system cartridge"
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source_ref: "caprice32/rom/system.cpr"
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md5: 39b565e648172980aa552293e667070f
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sha1: 405e341437fab8db477606238af0c20eca2e39ee
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note: "CPC+ system cartridge, default cartridge path"
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source_ref: "src/cap32.cpp:1904, src/cap32.cpp:1150, rom/system.cpr"
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- name: MF2.rom
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system: amstrad-cpc
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required: false
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mode: standalone
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size: 8192
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note: "Multiface 2 ROM"
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source_ref: "caprice32/rom/MF2.rom, src/cap32.cpp:1340-1359"
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md5: 4c9f014e91d407cc6509fad0095ab909
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sha1: 1431ec628d38f000715545dd2186b684c5fe5a6f
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note: "Multiface 2 ROM, read when mf2=1; checks the \"MULTIFACE 2\" signature at 0x0d32"
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source_ref: "src/cap32.cpp:1252-1278, rom/MF2.rom"
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platform_details:
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bios_mapping:
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source_ref: "cap32/cap32.c:1084-1112, cap32/cap32.c:348-351"
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source_ref: "cap32/cap32.c:1082-1114, cap32/cap32.c:345-349"
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note: |
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All ROMs are embedded. emulator_select_ROM() copies the appropriate
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ROM array into the pbROM buffer based on CPC.model. No filesystem
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lookup occurs in the libretro port. The retro_system_bios_directory
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variable is set up in libretro/libretro-core.c:1616-1627 but only used for
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a future custom BIOS feature that is not yet implemented.
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All ROMs are embedded. emulator_select_ROM() copies the ROM array for
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CPC.model into pbROM. No filesystem lookup occurs in the libretro
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port; retro_system_bios_directory is set in
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libretro/libretro-core.c:1617-1636 and no ROM is read from it.
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embedded_roms:
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source_ref: "cap32/rom/464.h, cap32/rom/6128.h, cap32/rom/amsdos.h, cap32/rom/6128p.h, cap32/rom/cpm.h"
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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"
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note: |
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5 ROM sets embedded as C arrays:
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OS_BASIC10 (32KB) - CPC 464/664 OS + BASIC 1.0
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OS_BASIC11 (32KB) - CPC 6128 OS + BASIC 1.1
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AMSDOS (16KB) - Disk controller ROM, mapped to slot 7
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OS_6128P - CPC+ system cartridge (White Label cartridge)
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cpmROM (128KB+) - CP/M boot snapshot including SNA header
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6 headers embedded as C arrays:
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OS464_BASIC10 (32KB) - CPC 464 OS + BASIC 1.0, sha1 56d39c463da60968d93e58b4ba0e675829412a20
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OS664_BASIC664 (32KB) - CPC 664 OS + BASIC 1.1, sha1 073a7665527b5bd8a148747a3947dbd3328682c8
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OS_BASIC11 (32KB) - CPC 6128 OS + BASIC 1.1, sha1 5977adbad3f7c1e0e082cd02fe76a700d9860c30
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AMSDOS (16KB) - disc ROM mapped to slot 7, sha1 39102c8e9cb55fcc0b9b62098780ed4a3cb6a4bb
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OS_6128P (65580 B) - CPC+ system cartridge
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CPM, CPM_SYS - CP/M memory dumps assembled into a 128KB snapshot
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model_rom_map:
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source_ref: "cap32/cap32.c:1084-1112"
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source_ref: "cap32/cap32.c:1082-1114"
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note: |
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CPC 464: OS_BASIC10 only (no disk support)
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CPC 664: OS_BASIC10 + AMSDOS in ROM slot 7
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CPC 6128: OS_BASIC11 + AMSDOS in ROM slot 7
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CPC+: 6128P system cartridge (or user-provided .cpr file)
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CPC 464: OS464_BASIC10 only
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CPC 464DDI: OS464_BASIC10 + AMSDOS in ROM slot 7
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CPC 664: OS664_BASIC664 + AMSDOS in ROM slot 7
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CPC 6128: OS_BASIC11 + AMSDOS in ROM slot 7
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CPC+: 6128P system cartridge (or user-provided .cpr file)
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