mirror of
https://github.com/Abdess/retroarch_system.git
synced 2026-04-13 12:22:33 -05:00
8768aed7aa
freechaf (Channel F, 3 ROMs), freeintv (Intellivision, exec+grom), ep128emu (Enterprise/TVC/CPC/ZX, 22 ROMs all built-in), kronos (Saturn + 14 ST-V blobs), gambatte (GB/GBC boot ROMs), mgba (GBA/GB/GBC/SGB, 10 CRC32 revisions), nestopia (FDS + NstDatabase), px68k (X68000, 6 ROMs in keropi/), fuse (ZX Spectrum, 17 machines), o2em (Odyssey2/Videopac, 4 BIOS by CRC32) 41 total profiles. Cross-reference: 644 undeclared, 167 in repo.
72 lines
2.5 KiB
YAML
72 lines
2.5 KiB
YAML
emulator: FreeIntv
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type: libretro
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source: "https://github.com/libretro/FreeIntv"
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cores:
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- freeintv
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systems:
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- intellivision
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notes: |
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FreeIntv is a Mattel Intellivision emulator for libretro.
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BIOS loading happens in retro_init() (src/libretro.c:1166-1174). The core
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calls retro_get_system_directory() then joins exec.bin and grom.bin paths
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directly. No subdirectory, no core option to disable BIOS loading.
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loadExec() in src/intv.c:47-71 reads exec.bin as big-endian 16-bit words
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into memory range 0x1000-0x1FFF (Executive ROM, 8 KB file).
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loadGrom() in src/intv.c:73-98 reads grom.bin as raw bytes into memory
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range 0x3000-0x37FF (Graphics ROM, 2 KB file).
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Both files are required. Without them the core prints an error and shows
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"PUT GROM/EXEC IN SYSTEM DIRECTORY" on the OSD, but does not abort.
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Games will not run correctly without both BIOS files.
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The .info file declares firmware_count = 2 with both marked opt = false.
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No ECS (Entertainment Computer System) BIOS support exists in this core.
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There is no ecs.bin loading code anywhere in the source.
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files:
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- name: "exec.bin"
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system: intellivision
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required: true
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size: 8192 # 8 KB (4096 x 16-bit words, 0x1000-0x1FFF)
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md5: 62e761035cb657903761800f4437b8af
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note: "Executive ROM. Big-endian 16-bit words loaded at 0x1000-0x1FFF."
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source_ref: "src/intv.c:47-71, src/libretro.c:1169"
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- name: "grom.bin"
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system: intellivision
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required: true
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size: 2048 # 2 KB (bytes, 0x3000-0x37FF)
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md5: 0cd5946c6473e42e8e4c2137785e427f
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note: "Graphics ROM. Raw bytes loaded at 0x3000-0x37FF."
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source_ref: "src/intv.c:73-98, src/libretro.c:1173"
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platform_details:
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bios_mapping:
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exec:
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target: "0x1000-0x1FFF (Executive ROM)"
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format: "big-endian 16-bit words"
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source_ref: "src/intv.c:55-58"
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grom:
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target: "0x3000-0x37FF (Graphics ROM)"
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format: "raw 8-bit bytes"
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source_ref: "src/intv.c:81-84"
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notes: |
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Memory[] is a 64K array of unsigned int (src/memory.c:26).
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EXEC region (0x1000-0x1FFF) is write-protected in writeMem()
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(src/memory.c:60-61). GROM region (0x3000-0x37FF) is also
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write-protected (src/memory.c:62).
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cartridge_loading:
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formats: "int, bin, rom"
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methods: "Intellicart (magic byte 0xA8), raw ROM with fingerprint DB"
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source_ref: "src/cart.c"
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notes: |
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Raw ROMs use a fingerprint database (sum of first 256 bytes)
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to select one of 10 memory map configurations (load0-load9).
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Intellicart format is auto-detected by 0xA8 magic byte.
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