emulator: WQXEmu type: standalone + libretro core_classification: official_port source: "https://git.libretro.com/libretro/wqxemu" upstream: "https://github.com/AloysHF/WQXEmu" profiled_date: "2026-10-18" source_commit: "05e34f90afe9ef448eb7198e443fbce8031c781c" upstream_commit: "05e34f90afe9ef448eb7198e443fbce8031c781c" core_version: "0.1.0" 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 refuses a non-null game info (crates/wqxemu-libretro/src/lib.rs:596-599) and the machine is started through Start Core, supports_no_game being set (crates/wqxemu-libretro/src/lib.rs:440-446). The model comes from the wqxemu_model core option, NC1020 when unset (crates/wqxemu-libretro/src/lib.rs:227-246, crates/wqxemu-libretro/src/lib.rs:920-937). The firmware set is whatever {system}/WQXEmu// holds (crates/wqxemu-libretro/src/lib.rs:216-221, model names in crates/wqxemu-core/src/machine.rs:35-43). File names are free: each regular file is assigned to a slot by its extension, case-insensitive, .rom or .bin to the system ROM, .fls or .nor to NOR, .nand to NAND and .nand0 to the first NAND plane. Anything else is ignored (crates/wqxemu-core/src/machine.rs:94-126). A slot matched by two files fails the start with "Multiple dumps", and so does a directory with no dump at all (crates/wqxemu-core/src/machine.rs:128-161). The set is then checked against the model: NC1020, PC1000 and CC800 need a ROM and a NOR and refuse NAND files. NC2000 needs NOR, NAND and NAND0 and refuses a ROM. NC3000 needs NOR and NAND, NAND0 optional, and refuses a ROM (crates/wqxemu-core/src/machine.rs:164-207). Any failure is shown and retro_load_game returns false (crates/wqxemu-libretro/src/lib.rs:608-622). Only the directory of the selected model is read. 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:635-641). No hash is verified. The firmware files are never written. Neither frontend calls save_nor; 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:280-304, crates/wqxemu-libretro/src/lib.rs:643-660, crates/wqxemu-core/src/save.rs:43-88). 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:209-233). That file is created by the core. retro_get_memory_data returns null for every memory id (crates/wqxemu-libretro/src/lib.rs:839-842). The standalone binary takes the same directory as --rom-dir, with the same extension rules; --model selects the machine, otherwise detect_model guesses it from the file sizes (crates/wqxemu/src/main.rs:27-34, crates/wqxemu/src/main.rs:239-261, crates/wqxemu-core/src/machines/mod.rs:38-87). Its device skin is drawn by code by default, or taken from include_bytes! PNGs with --skin image (crates/wqxemu/src/main.rs:57-59, crates/wqxemu/src/keypad.rs:72-91). The libretro-core-info file names the PC1000 NOR image pc1000.fls. Any single .fls or .nor file in WQXEmu/pc1000/ is read, but pc1000.fls and pc1000.nor side by side stop the PC1000 from starting. 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: >- The .rom/.bin file of {system}/WQXEmu/nc1020/, read whole. 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: "crates/wqxemu-core/src/machine.rs:119-123, crates/wqxemu-core/src/machines/nc1020.rs:61-98, 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: >- The .fls/.nor file of {system}/WQXEmu/nc1020/, read whole. 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: "crates/wqxemu-core/src/machine.rs:119-123, crates/wqxemu-core/src/machines/nc1020.rs:101-122, 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: >- The .rom/.bin file of {system}/WQXEmu/pc1000/, read whole 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: "crates/wqxemu-core/src/machine.rs:119-123, crates/wqxemu-core/src/machines/pc1000.rs:38-40, 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: >- The .fls/.nor file of {system}/WQXEmu/pc1000/, read whole. 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. The libretro-core-info file names it pc1000.fls. source_ref: "crates/wqxemu-core/src/machine.rs:119-123, crates/wqxemu-core/src/machines/pc1000.rs:42, 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: >- The .rom/.bin file of {system}/WQXEmu/cc800/, read whole. 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: "crates/wqxemu-core/src/machine.rs:119-123, crates/wqxemu-core/src/machines/cc800.rs:38, 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: >- The .fls/.nor file of {system}/WQXEmu/cc800/, read whole. 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: "crates/wqxemu-core/src/machine.rs:119-123, crates/wqxemu-core/src/machines/cc800.rs:40, 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: >- The .fls/.nor file of {system}/WQXEmu/nc2000/, read whole 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: "crates/wqxemu-core/src/machine.rs:119-123, crates/wqxemu-core/src/machines/nc2000.rs:20, crates/wqxemu-core/src/machines/nc2000.rs:28, 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: >- The .nand file of {system}/WQXEmu/nc2000/, read whole 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: "crates/wqxemu-core/src/machine.rs:119-123, crates/wqxemu-core/src/machines/nc2000.rs:22-26, crates/wqxemu-core/src/machines/nc2000.rs:278-282, 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: >- The .nand0 file of {system}/WQXEmu/nc2000/, read whole into the first 64 pages of the NAND array. No size check. validate_for_model requires a NAND0 dump for this model in both frontends, so a missing file stops the start. source_ref: "crates/wqxemu-core/src/machine.rs:119-123, crates/wqxemu-core/src/machine.rs:193-198, crates/wqxemu-core/src/machines/nc2000.rs:24, crates/wqxemu-core/src/machines/nc2000.rs:283-288, 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: >- The .fls/.nor file of {system}/WQXEmu/nc3000/, read whole 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: "crates/wqxemu-core/src/machine.rs:119-123, crates/wqxemu-core/src/machines/nc3000.rs:23, crates/wqxemu-core/src/machines/nc3000.rs:33, 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: >- The .nand file of {system}/WQXEmu/nc3000/, read whole 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: "crates/wqxemu-core/src/machine.rs:119-123, crates/wqxemu-core/src/machines/nc3000.rs:25-29, crates/wqxemu-core/src/machines/nc3000.rs:285-289, 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: >- The .nand0 file of {system}/WQXEmu/nc3000/, read whole into the first 64 pages of the NAND array when the file exists, and validate_for_model does not require it for this model. 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: "crates/wqxemu-core/src/machine.rs:119-123, crates/wqxemu-core/src/machine.rs:199-203, crates/wqxemu-core/src/machines/nc3000.rs:27-31, crates/wqxemu-core/src/machines/nc3000.rs:290-297, crates/wqxemu-core/src/machines/nc3000.rs:342-350"