mirror of
https://github.com/Abdess/retroarch_system.git
synced 2026-04-13 12:22:33 -05:00
d929424988
- Added profiled_date field to all 204 existing profiles for update tracking - Created 56 alias profiles for cores that share BIOS with a parent (e.g., mednafen_psx -> beetle_psx, fbalpha2012 -> fbneo) 260 total profiles covering all 294 libretro cores (204 unique + 56 alias).
69 lines
2.7 KiB
YAML
69 lines
2.7 KiB
YAML
emulator: DICE
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type: libretro
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source: "https://github.com/mittonk/dice-libretro"
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profiled_date: "2026-03-18"
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cores:
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- dice
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systems:
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- discrete-arcade
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notes: |
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DICE (Discrete Integrated Circuit Emulator) emulates early arcade hardware
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built entirely from discrete logic components, with no CPU. dice-libretro is
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a libretro port by Ken Mitton, based on upstream DICE by Adam B.
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No BIOS or firmware files required. The .info file declares firmware_count = 0.
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Games fall into two categories:
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- ROM-based: shipped as MAME-style ZIP archives (filename matters).
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The core loads the ZIP passed by the frontend and matches individual ROM
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chips by CRC32 (chips/rom.cpp:41-218, RomDesc::get_data). If a chip's
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CRC does not match, the core walks all entries in the archive looking for
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a CRC match or alt_crc match.
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- ROM-less: games like Pong, Breakout, Rebound whose original PCBs had no
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ROM at all. These use .dmy dummy launcher files (empty placeholders) to
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tell RetroArch which game to start.
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retro_get_system_info (libretro.cpp:122-137) sets need_fullpath = true,
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block_extract = true, valid_extensions = "zip|dmy|k1|a1|6c|c6|d2|s1|f4|a4|
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1da|da1|C4|4c|4d|d7|d4". The unusual extensions are raw ROM chip dumps for
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individual games (e.g. .k1 for antiaircraft, .a1 for attack).
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dice.cpp:42-66 strips any "#inner.rom" suffix from the path (for ROM
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managers that expose zip contents) and passes the zip path to
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RomDesc::set_zip_filename.
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retro_init (libretro.cpp:50-63) retrieves RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY
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but uses it only for the retro_base_directory variable, not for loading any
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system files.
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Games with ROMs (10 titles):
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antiaircraft.zip - 1 ROM chip (k1)
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attack.zip - 6 ROM chips (a1, b1, c1, d1, j6, k6), each with alt_crc
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cleansweep.zip - 3 ROM chips (6c, d7, k3)
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crashnscore.zip - 6 ROM chips (d2, e2, f6, f7, p6, p7)
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indy4.zip - 4 ROM chips (s1, s2, c1, c2)
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jetfighter.zip - 6 ROM chips (a4, j1, j5, k5, m1, r5)
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sharkjaws.zip - 2 ROM chips (1da/da1, 1db/db1)
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steeplechase.zip - 2 ROM chips (C4, D4); bugle ROM c8 dump missing
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stuntcycle.zip - 2 ROM chips (4d, 1fh)
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wipeout.zip - 2 ROM chips (d4, g7)
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ROM-less games (11 titles, use .dmy dummy files):
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breakout, crossfire, gotcha, hiway, pinpong, pong, pongdoubles,
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quadrapong, rebound, spacerace, tvbasketball
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files: []
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analysis:
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rom_loading:
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method: "MAME-style ZIP, matched by CRC32 per RomDesc"
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source_ref: "chips/rom.cpp:41-218"
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zip_handling: "unzip library (unzip/), opened via libretro_zip_filename"
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game_count: 21
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rom_games: 10
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romless_games: 11
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filesystem_access: false
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system_directory_used: false
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bios_required: false
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