mirror of
https://github.com/Abdess/retroarch_system.git
synced 2026-04-13 12:22:33 -05:00
60d9d38d69
mame2003_plus (16 BIOS ZIPs, MAME 0.78 naming), mame2010 (51 ZIPs), mame2016 (37 ZIPs incl Lindbergh), hbmame (MAME 0.220, no custom BIOS), tyrquake (no BIOS), cannonball (29 OutRun ROMs with CRC32), uzem (open source, no BIOS), vecx (ROM embedded), emuscv (UPD7801G), b2 (BBC Micro standalone, ROMs bundled) 81 total emulator profiles covering all libretro cores with firmware. Cross-reference: 731 undeclared files, 186 already in repo.
61 lines
2.2 KiB
YAML
61 lines
2.2 KiB
YAML
emulator: vecx
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type: libretro
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source: "https://github.com/libretro/libretro-vecx"
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cores:
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- vecx
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systems:
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- gce-vectrex
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notes: |
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vecx is a GCE Vectrex emulator ported to libretro.
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The Vectrex system ROM (8192 bytes) is fully embedded in the binary.
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There are three compile-time BIOS variants in bios/:
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- system.h (STANDARD_BIOS, default) - original Vectrex ROM
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- fast.h (FAST_BIOS) - modified BIOS with faster boot
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- skip.h - modified BIOS that skips the intro
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The default build uses STANDARD_BIOS via #define at libretro.c:20.
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At load time (retro_load_game, libretro.c:736):
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memcpy(rom, bios_data, bios_data_size);
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This copies the compiled-in BIOS data into the rom[8192] array
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(vecx.c:40, mapped at 0xE000-0xFFFF via vecx.c:437-439).
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The core never calls RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY and has
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no code path to load an external BIOS file from disk. No .info file
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is shipped with the repo declaring firmware requirements.
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rom.dat in the repo root is identical to bios/system.bin (same MD5:
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ab082fa8c8e632dd68589a8c7741388f), likely kept for standalone builds.
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files: []
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platform_details:
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bios_mapping:
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target: "0xE000-0xFFFF in Vectrex address space (8 KB)"
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source_ref: "vecx.c:40 (unsigned char rom[8192]), vecx.c:437-439 (read handler)"
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notes: |
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CPU reads from 0xE000-0xFFFF are served from rom[] via
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address & 0x1FFF masking. The array is populated from the
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compiled-in bios_data at retro_load_game() time.
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embedded_bios:
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source_ref: "libretro.c:20-30, bios/system.h"
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standard_bios:
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md5: "ab082fa8c8e632dd68589a8c7741388f"
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sha1: "65d07426b520ddd3115d40f255511e0fd2e20ae7"
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size: 8192
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fast_bios:
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md5: "a970aed37cffd29ab3740f8e79518858"
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sha1: "e0900be6d6858b985fd7f0999d864b2fceaf01a1"
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size: 8192
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skip_bios:
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md5: "05f32c2b18b6fb168ab976989e86dfb1"
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sha1: "6c891bd74acb201d54071b310bd6df6617cdf205"
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size: 8192
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notes: |
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All three variants are 8192 bytes, compiled as C arrays in
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bios/*.h headers. STANDARD_BIOS is the authentic Vectrex ROM.
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FAST_BIOS and skip are modified versions for faster startup.
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Selection is compile-time only (#ifdef chain, libretro.c:20-30).
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