emulator: WQXEmu type: standalone + libretro core_classification: official_port source: "https://git.libretro.com/libretro/wqxemu" upstream: "https://github.com/AloysHF/WQXEmu" profiled_date: "2026-11-09" source_commit: "44f492cfac4c47e9e2470144c972264779c5f9bf" upstream_commit: "44f492cfac4c47e9e2470144c972264779c5f9bf" core_version: "0.1.0" version_basis: kind: file path: "Cargo.toml" pattern: 'version\s+=\s+"([^"]+)' display_name: "Wenquxing - Electronic Dictionary (WQXEmu)" cores: - wqxemu systems: - wenquxing-nc1020 - wenquxing-pc1000 - wenquxing-cc800 - wenquxing-nc2000 - wenquxing-nc3000 notes: | Wenquxing electronic dictionary emulator written in Rust by AloysHF. The libretro core and the wqx-emu standalone binary share the wqxemu-core crate, which runs the original firmware of five models on an emulated 6502 SoC: NC1020, PC1000, CC800, NC2000 and NC3000. The git.libretro.com repository is a mirror of the GitHub one at the same commit, and the buildbot consumes its .gitlab-ci.yml. The core takes no content. retro_load_game ignores the game info it is given and starts the machine, supports_no_game being set (crates/wqxemu-libretro/src/lib.rs:776-793, crates/wqxemu-libretro/src/lib.rs:608-612). The model comes from the wqxemu_model core option, NC1020 when unset (crates/wqxemu-libretro/src/lib.rs:325-345, crates/wqxemu-libretro/src/lib.rs:1111-1129). The firmware set is read from {system}/wqxemu// (crates/wqxemu-libretro/src/lib.rs:310-323, crates/wqxemu-libretro/src/lib.rs:389-407). The folder names and file names are fixed and compared byte for byte against the directory entries, so a folder or file that differs only in case is not found (crates/wqxemu-core/src/machine.rs:111-131, model names in crates/wqxemu-core/src/machine.rs:33-44). Each model reads only its own files: obj_lu.bin and nc1020.fls for the NC1020, pc1000.rom and pc1000.nor for the PC1000, obj.bin and cc800.fls for the CC800, nc2000.nor, nc2000.nand and nc2000.nand0 for the NC2000, nc3000.nor, nc3000.nand and an optional nc3000.nand0 for the NC3000 (crates/wqxemu-core/src/machine.rs:63-84, crates/wqxemu-core/src/machine.rs:176-194). A missing folder or any missing required file fails the start with a message listing every missing name (crates/wqxemu-core/src/machine.rs:153-175, crates/wqxemu-core/src/machine.rs:196-204), shown by the core before retro_load_game returns false (crates/wqxemu-libretro/src/lib.rs:787-793). Other files in the folder are ignored. The Emscripten build used by EmulatorJS reads the same layout from the root of the extracted firmware archive, and there the model is the only wqxemu// folder the archive holds. Several model folders stop the start (crates/wqxemu-libretro/src/lib.rs:347-387). Each machine reads its files whole with std::fs::read and checks their size only: a ROM or NOR image must be at least as large as the window it fills, the PC1000 ROM must be exactly 12 MiB or 16 MiB, and NAND images are copied without any check. A file that fails the check makes Emulator::new fail and retro_load_game returns false with the loader's message (crates/wqxemu-libretro/src/lib.rs:806-812). No hash is verified. The firmware files are never written. The writable flash, NAND, RAM and peripheral state of a session is serialized to {save}//.wqxs, a gzip file the core creates on unload and reloads at the next start of the same model and firmware set (crates/wqxemu-libretro/src/lib.rs:441-467, crates/wqxemu-libretro/src/lib.rs:814-842, crates/wqxemu-core/src/save.rs:46-96). The Emscripten build writes no session file. The fingerprint is an FNV-1a over the slot layout and the content of every file of the set (crates/wqxemu-core/src/machine.rs:252-276). That file is created by the core. retro_get_memory_data returns null for every memory id (crates/wqxemu-libretro/src/lib.rs:1025-1032). The standalone binary reads the same wqxemu// layout below --system-dir, ./system by default, and --model selects the machine, nc1020 by default (crates/wqxemu/src/main.rs:27-42, crates/wqxemu/src/main.rs:235-249). It keeps a session only in the file named by --state-file (crates/wqxemu/src/main.rs:179-233). Its device skin is drawn by code by default, or taken from include_bytes! PNGs with --skin image (crates/wqxemu/src/main.rs:53-55, crates/wqxemu/src/keypad.rs:72-91). files: - name: obj_lu.bin path: wqxemu/nc1020/obj_lu.bin system: wenquxing-nc1020 required: true min_size: 25165824 validation: [size] description: "NC1020 system ROM, three 8 MiB volumes" note: >- Read whole from {system}/wqxemu/nc1020/obj_lu.bin. The image must be at least 0x8000 * 0x300 bytes or the loader fails, and a larger file is kept whole. Each 32 KiB bank is stored with its 16 KiB halves swapped and is swapped back on load, and the BBS pages are mapped from it. source_ref: "source crates/wqxemu-core/src/machine.rs:65-72, source crates/wqxemu-core/src/machine.rs:178-183, source crates/wqxemu-core/src/machines/nc1020.rs:61-98, source crates/wqxemu-core/src/memory.rs:24" - name: nc1020.fls path: wqxemu/nc1020/nc1020.fls system: wenquxing-nc1020 required: true min_size: 1048576 validation: [size] description: "NC1020 NOR flash, 32 banks of 32 KiB" note: >- Read whole from {system}/wqxemu/nc1020/nc1020.fls. The image must be at least 0x8000 * 0x20 bytes or the loader fails. Only the first 1 MiB is used, with the same 16 KiB half swap as the ROM. Writes go to the in-memory copy and are persisted in the .wqxs session file, never to this file. source_ref: "source crates/wqxemu-core/src/machine.rs:76-84, source crates/wqxemu-core/src/machine.rs:178-183, source crates/wqxemu-core/src/machines/nc1020.rs:101-122, source crates/wqxemu-core/src/memory.rs:26" - name: pc1000.rom path: wqxemu/pc1000/pc1000.rom system: wenquxing-pc1000 required: true size: [12582912, 16777216] validation: [size] description: "PC1000 system ROM, obj1 + obj2 + obj3" note: >- Read whole from {system}/wqxemu/pc1000/pc1000.rom and stored linearly. Exactly 12 MiB (obj1, obj2, obj3 back to back) or 16 MiB (the PC1000EMUX and Android layout, obj3 at 12 MiB with 8 to 12 MiB unused) is accepted. Any other size fails the loader. The volume tables are rebuilt for the layout found. source_ref: "source crates/wqxemu-core/src/machine.rs:65-72, source crates/wqxemu-core/src/machine.rs:178-183, source crates/wqxemu-core/src/machines/pc1000.rs:38-40, source crates/wqxemu-core/src/machines/pc1000.rs:236-283" - name: pc1000.nor path: wqxemu/pc1000/pc1000.nor system: wenquxing-pc1000 required: true min_size: 524288 validation: [size] description: "PC1000 NOR flash, 16 banks of 32 KiB" note: >- Read whole from {system}/wqxemu/pc1000/pc1000.nor. The image must be at least 0x80000 bytes or the loader fails. Only the first 512 KiB is used. A dump stored with swapped 16 KiB halves is recognised by the info-block signature at bank 0 offset 0x4000 and unswapped. source_ref: "source crates/wqxemu-core/src/machine.rs:76-84, source crates/wqxemu-core/src/machine.rs:178-183, source crates/wqxemu-core/src/machines/pc1000.rs:42, source crates/wqxemu-core/src/machines/pc1000.rs:284-313" - name: obj.bin path: wqxemu/cc800/obj.bin system: wenquxing-cc800 required: true min_size: 16777216 validation: [size] description: "CC800 system ROM, two volumes of 256 banks" note: >- Read whole from {system}/wqxemu/cc800/obj.bin. The image must be at least 0x1000000 bytes or the loader fails. Only the first 16 MiB is used. Each 32 KiB bank is stored with its 16 KiB halves swapped and is swapped back on load. Volume 0 is banks 0 to 255, volume 1 banks 256 to 511. source_ref: "source crates/wqxemu-core/src/machine.rs:65-72, source crates/wqxemu-core/src/machine.rs:178-183, source crates/wqxemu-core/src/machines/cc800.rs:38, source crates/wqxemu-core/src/machines/cc800.rs:229-251" - name: cc800.fls path: wqxemu/cc800/cc800.fls system: wenquxing-cc800 required: true min_size: 524288 validation: [size] description: "CC800 NOR flash, 16 banks of 32 KiB" note: >- Read whole from {system}/wqxemu/cc800/cc800.fls. The image must be at least 0x80000 bytes or the loader fails. Only the first 512 KiB is used, with the same 16 KiB half swap as the ROM. source_ref: "source crates/wqxemu-core/src/machine.rs:76-84, source crates/wqxemu-core/src/machine.rs:178-183, source crates/wqxemu-core/src/machines/cc800.rs:40, source crates/wqxemu-core/src/machines/cc800.rs:252-267" - name: nc2000.nor path: wqxemu/nc2000/nc2000.nor system: wenquxing-nc2000 required: true min_size: 524288 validation: [size] description: "NC2000 NOR flash, 16 banks of 32 KiB" note: >- Read whole from {system}/wqxemu/nc2000/nc2000.nor in physical order, no bank swap. The image must be at least 16 * 0x8000 bytes or the loader fails. Only the first 512 KiB is used. Bank 0 is the fixed BIOS page at 0xE000. source_ref: "source crates/wqxemu-core/src/machine.rs:76-84, source crates/wqxemu-core/src/machine.rs:184-188, source crates/wqxemu-core/src/machines/nc2000.rs:20, source crates/wqxemu-core/src/machines/nc2000.rs:28, source crates/wqxemu-core/src/machines/nc2000.rs:265-277" - name: nc2000.nand path: wqxemu/nc2000/nc2000.nand system: wenquxing-nc2000 required: true size: 34603008 description: "NC2000 NAND flash main area, 65536 pages of 528 bytes" note: >- Read whole from {system}/wqxemu/nc2000/nc2000.nand and copied after the 64-page first plane, up to 65536 pages of 512 data plus 16 spare bytes. No size check: bytes beyond that are ignored and a shorter file leaves the remainder erased at 0xFF. source_ref: "source crates/wqxemu-core/src/machine.rs:184-188, source crates/wqxemu-core/src/machines/nc2000.rs:22-26, source crates/wqxemu-core/src/machines/nc2000.rs:278-282, source crates/wqxemu-core/src/machines/nc2000.rs:292-296" - name: nc2000.nand0 path: wqxemu/nc2000/nc2000.nand0 system: wenquxing-nc2000 required: true size: 33792 description: "NC2000 NAND flash first plane, 64 pages of 528 bytes" note: >- Read whole from {system}/wqxemu/nc2000/nc2000.nand0 into the first 64 pages of the NAND array. No size check. The firmware set of this model requires it in both frontends, so a missing file stops the start. source_ref: "source crates/wqxemu-core/src/machine.rs:184-188, source crates/wqxemu-core/src/machines/nc2000.rs:24, source crates/wqxemu-core/src/machines/nc2000.rs:283-288, source crates/wqxemu-core/src/machines/nc2000.rs:298-301" - name: nc3000.nor path: wqxemu/nc3000/nc3000.nor system: wenquxing-nc3000 required: true min_size: 1048576 validation: [size] description: "NC3000 NOR flash, 32 banks of 32 KiB" note: >- Read whole from {system}/wqxemu/nc3000/nc3000.nor in physical order, no bank swap. The image must be at least 32 * 0x8000 bytes or the loader fails. Only the first 1 MiB is used. Bank 0 is the fixed BIOS page at 0xE000. source_ref: "source crates/wqxemu-core/src/machine.rs:76-84, source crates/wqxemu-core/src/machine.rs:189-193, source crates/wqxemu-core/src/machines/nc3000.rs:23, source crates/wqxemu-core/src/machines/nc3000.rs:33, source crates/wqxemu-core/src/machines/nc3000.rs:272-284" - name: nc3000.nand path: wqxemu/nc3000/nc3000.nand system: wenquxing-nc3000 required: true size: 69206016 storage: large_file description: "NC3000 NAND flash, two planes of 65536 pages of 528 bytes" note: >- Read whole from {system}/wqxemu/nc3000/nc3000.nand and copied after the 64-page first plane, up to 131072 pages of 512 data plus 16 spare bytes. No size check: bytes beyond that are ignored and a shorter file leaves the remainder erased at 0xFF. source_ref: "source crates/wqxemu-core/src/machine.rs:189-193, source crates/wqxemu-core/src/machines/nc3000.rs:25-29, source crates/wqxemu-core/src/machines/nc3000.rs:285-289, source crates/wqxemu-core/src/machines/nc3000.rs:336-340" - name: nc3000.nand0 path: wqxemu/nc3000/nc3000.nand0 system: wenquxing-nc3000 required: false size: 33792 description: "NC3000 NAND flash first plane, 64 pages of 528 bytes" note: >- Read whole from {system}/wqxemu/nc3000/nc3000.nand0 into the first 64 pages of the NAND array when the file exists. The firmware set of this model does not require it. Without it the core writes the marker "ggv nc3000" at offset 528 of an erased first plane and the machine boots the same way. source_ref: "source crates/wqxemu-core/src/machine.rs:189-193, source crates/wqxemu-core/src/machines/nc3000.rs:27-31, source crates/wqxemu-core/src/machines/nc3000.rs:290-297, source crates/wqxemu-core/src/machines/nc3000.rs:342-350"