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libretro/emulators/rust_dos.yml
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emulator: Rust-DOS
type: standalone + libretro
core_classification: official_port
source: "https://git.libretro.com/libretro/rust-dos"
upstream: "https://github.com/dividebysandwich/rust-dos"
profiled_date: "2026-10-04"
source_commit: "12d8fe849f737b92d0b03b4db79cacc7ba898fab"
upstream_commit: "12d8fe849f737b92d0b03b4db79cacc7ba898fab"
core_version: "1.3.0"
display_name: "DOS (Rust-DOS)"
cores:
- rust_dos
systems:
- dos
mode: both
notes: |
Rust-DOS is an x86 DOS emulator written in Rust by dividebysandwich,
with a built-in DOS, BIOS, XMS, EMS, DPMI host and software MIDI
(OPL3). The README states "no DOS or BIOS images needed" and the
libretro core declares supports_no_game = "true" with no firmware
entries (libretro/rust_dos_libretro.info).
Three optional firmware families serve games written for specific
sound hardware. None is needed with the default settings.
- AWE32 sample ROM (awe32.raw): the Creative Sound Blaster AWE32's
1 MB sample ROM. src/awe32/rom.rs:13-17 declares FILE_NAME and the
SHA-256 the built-in download has to match (src/awe32/rom.rs:88-93).
A file found on disk is only checked for its length, 1 MB or the
two bytes shorter AWE-DUMP image (src/awe32/rom.rs:68-71). Without
it, the EMU8000 synth still plays what programs load into its
sample RAM but ROM sounds are silent (src/awe32/rom.rs:4-6,
src/sound.rs:26-38).
- Roland Sound Canvas ROMs: a Rust port of Nuked-SC55 covers the
SC-55, SC-55mkII, SC-55ST, CM-300/SCC-1, SCB-55, RLP-3237, SC-155
and SC-155mkII. src/sc55/rom.rs:143-295 lists 14 romsets of 3 to 5
ROM files, each identified by the SHA-256 of its contents whatever
the file is called. The search covers sc55-roms/ and
soundcanvas-roms/ with their subfolders and zip archives
(src/sc55/rom.rs:352-362). The settings window can download eight
of the sets from the Internet Archive item
roland-sc-55-series-roms into sc55-roms/<set name>/
(src/sc55/download.rs:12-24, 39, 63-82). With midisynth=sc55 and no
complete set, the MPU-401 gets no synthesizer and a warning is
logged (src/sc55/mod.rs:112-122, src/sound.rs:99-106).
- Roland MT-32 ROMs: played by munt (libmt32emu) loaded at runtime
(src/mt32.rs:1-6). munt identifies the ROMs from their contents;
rust-dos declares no hashes and picks a control and PCM pair by
munt's ids (src/mt32.rs:254-278). Without them (or without
libmt32emu on the host), midisynth=mt32 fails with a warning and
the MPU-401 gets no synthesizer (src/sound.rs:94-98).
The libretro frontend adds its system directory and the rust-dos
folder in it to the AWE32 and Sound Canvas search paths
(libretro/src/core.rs:148-157).
files:
- name: "awe32.raw"
system: dos
required: false
category: bios
size: 1048576 # 1 MB (2 * ROM_WORDS, 512 Ki 16-bit words)
sha256: "4e143b94f758734f594ded78f4e5115635975c16fa37fabeae0baa4938ca710e"
validation: [size]
description: "Creative Sound Blaster AWE32 sample ROM for the EMU8000 synth"
source_ref: "src/awe32/rom.rs:13 (FILE_NAME), 16-17 (DOWNLOAD_URL + SHA256), 68-71 (parse size check), 88-93 (download hash check)"
# Sound Canvas ROM sets. The code names no file: each entry is labelled
# sc55-roms/<set name>/<location>, the folder the built-in download
# writes to. A ROM shared by several sets is listed once, except ROM1
# of mk1-v1.20 and mk1-v1.21, listed under both.
- name: "sc55-roms/mk1-v1.21/rom1.bin"
system: dos
required: false
category: bios
sha256: "7e1bacd1d7c62ed66e465ba05597dcd60dfc13fc23de0287fdbce6cf906c6544"
validation: [sha256]
description: "Roland SC-55 v1.21 program ROM 1 (H8/532 code), auto-preferred set"
source_ref: "src/sc55/rom.rs:214, 299 (PREFERRED)"
- name: "sc55-roms/mk1-v1.21/rom2.bin"
system: dos
required: false
category: bios
sha256: "effc6132d68f7e300aaef915ccdd08aba93606c22d23e580daf9ea6617913af1"
validation: [sha256]
description: "Roland SC-55 v1.21 program ROM 2"
source_ref: "src/sc55/rom.rs:215"
- name: "sc55-roms/mk1-v1.21/wave1.bin"
system: dos
required: false
category: bios
sha256: "5655509a531804f97ea2d7ef05b8fec20ebf46216b389a84c44169257a4d2007"
validation: [sha256]
description: "Roland SC-55 Wave1 PCM (shared across all SC-55 mk1 versions and SC-155)"
source_ref: "src/sc55/rom.rs:135 (MK1_WAVE1), 216"
- name: "sc55-roms/mk1-v1.21/wave2.bin"
system: dos
required: false
category: bios
sha256: "c655b159792d999b90df9e4fa782cf56411ba1eaa0bb3ac2bdaf09e1391006b1"
validation: [sha256]
description: "Roland SC-55 Wave2 PCM"
source_ref: "src/sc55/rom.rs:136 (MK1_WAVE2), 217"
- name: "sc55-roms/mk1-v1.21/wave3.bin"
system: dos
required: false
category: bios
sha256: "334b2d16be3c2362210fdbec1c866ad58badeb0f84fd9bf5d0ac599baf077cc2"
validation: [sha256]
description: "Roland SC-55 Wave3 PCM"
source_ref: "src/sc55/rom.rs:137 (MK1_WAVE3), 218"
- name: "sc55-roms/mk1-v1.00/rom1.bin"
system: dos
required: false
category: bios
sha256: "b4ecf44bc0520322b0d114d397951d3bf92ca6fa51d0d27b2407df58a6be2efe"
validation: [sha256]
description: "Roland SC-55 v1.00 program ROM 1"
source_ref: "src/sc55/rom.rs:181"
- name: "sc55-roms/mk1-v1.00/rom2.bin"
system: dos
required: false
category: bios
sha256: "014e2e21ea30de7a1e4f1cdea14dd9a719960535e257a9e40e98dbb1a5870226"
validation: [sha256]
description: "Roland SC-55 v1.00 program ROM 2"
source_ref: "src/sc55/rom.rs:182"
- name: "sc55-roms/mk1-v1.10/rom1.bin"
system: dos
required: false
category: bios
sha256: "2fe88ec39f3ef4b1de8cdf74527419467975c47f7aacfcd07605e01d54bd89b5"
validation: [sha256]
description: "Roland SC-55 v1.10 program ROM 1"
source_ref: "src/sc55/rom.rs:192"
- name: "sc55-roms/mk1-v1.10/rom2.bin"
system: dos
required: false
category: bios
sha256: "ec064d6c4fc70ec990911089d966043cb819fba0e26e6f6afdd0a05e5301b91b"
validation: [sha256]
description: "Roland SC-55 v1.10 program ROM 2"
source_ref: "src/sc55/rom.rs:193"
- name: "sc55-roms/mk1-v1.20/rom1.bin"
system: dos
required: false
category: bios
sha256: "7e1bacd1d7c62ed66e465ba05597dcd60dfc13fc23de0287fdbce6cf906c6544"
validation: [sha256]
description: "Roland SC-55 v1.20 program ROM 1 (same bytes as v1.21 ROM1)"
source_ref: "src/sc55/rom.rs:203"
- name: "sc55-roms/mk1-v1.20/rom2.bin"
system: dos
required: false
category: bios
sha256: "22ce6ca59e6332143b335525e81fab501ea6fccce4b7e2f3bfc2cc8bf6612ff6"
validation: [sha256]
description: "Roland SC-55 v1.20 program ROM 2"
source_ref: "src/sc55/rom.rs:204"
- name: "sc55-roms/mk1-v2.00/rom1.bin"
system: dos
required: false
category: bios
sha256: "24a65c97cdbaa847d6f59193523ce63c73394b4b693a6517ee79441f2fb8a3ee"
validation: [sha256]
description: "Roland SC-55 v2.00 program ROM 1 (shared with SC-155-rev1)"
source_ref: "src/sc55/rom.rs:225"
- name: "sc55-roms/mk1-v2.00/rom2.bin"
system: dos
required: false
category: bios
sha256: "f5dac35d450ab986570a209dff3816eec75cee669e161f54b51224b467dd0bcc"
validation: [sha256]
description: "Roland SC-55 v2.00 program ROM 2"
source_ref: "src/sc55/rom.rs:226"
- name: "sc55-roms/mk2-v1.01/rom1.bin"
system: dos
required: false
category: bios
sha256: "8a1eb33c7599b746c0c50283e4349a1bb1773b5c0ec0e9661219bf6c067d2042"
validation: [sha256]
description: "Roland SC-55mkII v1.01 H8/532 ROM 1 (shared with SC-55ST and SC-155mkII)"
source_ref: "src/sc55/rom.rs:131 (MK2_ROM1), 148"
- name: "sc55-roms/mk2-v1.01/rom2.bin"
system: dos
required: false
category: bios
sha256: "a4c9fd821059054c7e7681d61f49ce6f42ed2fe407a7ec1ba0dfdc9722582ce0"
validation: [sha256]
description: "Roland SC-55mkII v1.01 program ROM 2 (shared with SC-155mkII)"
source_ref: "src/sc55/rom.rs:149"
- name: "sc55-roms/mk2-v1.01/smrom.bin"
system: dos
required: false
category: bios
sha256: "b0b5f865a403f7308b4be8d0ed3ba2ed1c22db881b8a8326769dea222f6431d8"
validation: [sha256]
description: "Roland SC-55mkII sub-MCU (M37450) ROM (shared with SC-55ST and SC-155mkII)"
source_ref: "src/sc55/rom.rs:132 (MK2_SMROM), 150"
- name: "sc55-roms/mk2-v1.01/wave1.bin"
system: dos
required: false
category: bios
sha256: "c6429e21b9b3a02fbd68ef0b2053668433bee0bccd537a71841bc70b8874243b"
validation: [sha256]
description: "Roland SC-55mkII Wave1 PCM (shared with SC-55ST, SC-155mkII, SCB-55)"
source_ref: "src/sc55/rom.rs:133 (MK2_WAVE1), 151"
- name: "sc55-roms/mk2-v1.01/wave2.bin"
system: dos
required: false
category: bios
sha256: "5b753f6cef4cfc7fcafe1430fecbb94a739b874e55356246a46abe24097ee491"
validation: [sha256]
description: "Roland SC-55mkII Wave2 PCM (shared with SC-55ST, SC-155mkII, SCB-55 Wave3, CM-300 Wave3)"
source_ref: "src/sc55/rom.rs:134 (MK2_WAVE2), 152"
- name: "sc55-roms/sc155-rev1/rom2.bin"
system: dos
required: false
category: bios
sha256: "ceb7b9d3d9d264efe5dc3ba992b94f3be35eb6d0451abc574b6f6b5dc3db237b"
validation: [sha256]
description: "Roland SC-155 rev1 program ROM 2 (ROM1 shared with mk1-v2.00; Wave1/2/3 shared with mk1 family)"
source_ref: "src/sc55/rom.rs:289"
- name: "sc55-roms/cm300-v1.30/rom1.bin"
system: dos
required: false
category: bios
sha256: "9ec66abb5231b6c6f46f48b33d5412703041037d69a6803626ac402f25552af2"
validation: [sha256]
description: "Roland CM-300 / SCC-1 v1.30 program ROM 1"
source_ref: "src/sc55/rom.rs:258"
- name: "sc55-roms/cm300-v1.30/rom2.bin"
system: dos
required: false
category: bios
sha256: "f89442734fdebacae87c7707c01b2d7fdbf5940abae738987aee912d34b5882e"
validation: [sha256]
description: "Roland CM-300 / SCC-1 v1.30 program ROM 2"
source_ref: "src/sc55/rom.rs:259"
- name: "sc55-roms/cm300-v1.30/wave1.bin"
system: dos
required: false
category: bios
sha256: "40c093cbfb4441a5c884e623f882a80b96b2527f9fd431e074398d206c0f073d"
validation: [sha256]
description: "Roland CM-300 Wave1 PCM (shared with CM-300 v1.10 and v1.20)"
source_ref: "src/sc55/rom.rs:138 (CM300_WAVE1), 260"
- name: "sc55-roms/cm300-v1.30/wave2.bin"
system: dos
required: false
category: bios
sha256: "9bbbcac747bd6f7a2693f4ef10633db8ab626f17d3d9c47c83c3839d4dd2f613"
validation: [sha256]
description: "Roland CM-300 Wave2 PCM"
source_ref: "src/sc55/rom.rs:139 (CM300_WAVE2), 261"
- name: "sc55-roms/st-v1.01/rom2.bin"
system: dos
required: false
category: bios
sha256: "03517ac0a3b1ad8b69a1a4ee045e0c21da0170027bd1ba1bd3cf72cd017bbe6a"
validation: [sha256]
description: "Roland SC-55ST v1.01 program ROM 2 (ROM1, sub-MCU and wave ROMs shared with SC-55mkII)"
source_ref: "src/sc55/rom.rs:171"
- name: "sc55-roms/cm300-v1.10/rom1.bin"
system: dos
required: false
category: bios
sha256: "72ed35481efbf25b3c492b83183655d17a3b266ecb30ffbc6dc977e6a8d261b2"
validation: [sha256]
description: "Roland CM-300 / SCC-1 v1.10 program ROM 1 (shared with v1.20)"
source_ref: "src/sc55/rom.rs:236"
- name: "sc55-roms/cm300-v1.10/rom2.bin"
system: dos
required: false
category: bios
sha256: "0283d32e6993a0265710c4206463deb937b0c3a4819b69f471a0eca5865719f9"
validation: [sha256]
description: "Roland CM-300 / SCC-1 v1.10 program ROM 2"
source_ref: "src/sc55/rom.rs:237"
- name: "sc55-roms/cm300-v1.20/rom2.bin"
system: dos
required: false
category: bios
sha256: "fef1acb1969525d66238be5e7811108919b07a4df5fbab656ad084966373483f"
validation: [sha256]
description: "Roland CM-300 / SCC-1 v1.20 program ROM 2"
source_ref: "src/sc55/rom.rs:248"
- name: "sc55-roms/scb55-v2.00/rom1.bin"
system: dos
required: false
category: bios
sha256: "00df835d3f97fc8b0059db63f36d608eec2bfd1f51ad54eb5af52c868c1111b1"
validation: [sha256]
description: "Roland SCB-55 v2.00 program ROM 1 (shared with RLP-3237)"
source_ref: "src/sc55/rom.rs:269"
- name: "sc55-roms/scb55-v2.00/rom2.bin"
system: dos
required: false
category: bios
sha256: "541be4d0b1ef0d07bb042ba67ffd099c8a5d746aac4cd24ce8842c034379f213"
validation: [sha256]
description: "Roland SCB-55 v2.00 program ROM 2"
source_ref: "src/sc55/rom.rs:270"
- name: "sc55-roms/rlp3237-v2.01/rom2.bin"
system: dos
required: false
category: bios
sha256: "e0a3d6d9b05e82374a0d289901273ce560ce1ead86459c75f844158b32d204a9"
validation: [sha256]
description: "Roland RLP-3237 v2.01 program ROM 2"
source_ref: "src/sc55/rom.rs:280"
- name: "sc55-roms/rlp3237-v2.01/wave1.bin"
system: dos
required: false
category: bios
sha256: "dae2a8bc0fd3bcaf3f5e3ab6c4c6fd30e2663bf26ca17afe52924874c0afc4e2"
validation: [sha256]
description: "Roland RLP-3237 Wave1 PCM"
source_ref: "src/sc55/rom.rs:281"
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