mirror of
https://github.com/Abdess/retroarch_system.git
synced 2026-04-14 04:42:32 -05:00
b43d71e113
dolphin_launcher (stub launcher), oberon (RISC, bootloader embedded), 17 test cores (00_example through vidtest), 17 game/utility cores (2048 through vaporspec), bennugd, boytacean, emux_chip8, fake08, jaxe, lowresnx, opentyrian, openlara, squirreljme, vitaquake2, xrick 182 total profiles. 6 agents failed (API 500), will retry.
40 lines
1.6 KiB
YAML
40 lines
1.6 KiB
YAML
emulator: Oberon
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type: libretro
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source: "https://github.com/libretro/oberon-risc-emu"
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cores:
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- oberon
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systems: [oberon]
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# Project Oberon RISC emulator by Peter De Wachter.
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# Emulates the Oberon RISC processor designed by Niklaus Wirth.
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# The bootloader (512 words) is compiled into the binary from risc-boot.inc,
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# loaded into ROM at 0xFFFFF800 on startup (risc.c:75-77, risc_new).
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#
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# Content: .dsk disk images containing the full Oberon operating system.
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# The disk image is loaded via retro_load_game(game->path) and attached
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# as SPI disk (Libretro/libretro.c:209-214). No files are read from
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# the RetroArch system directory.
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#
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# Reference disk images ship in the repo under DiskImage/:
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# Oberon-2020-08-18.dsk (990208 bytes, latest)
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# Oberon-2019-01-21.dsk (988160 bytes)
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# Oberon-2016-08-02.dsk (989184 bytes)
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# Oberon-2016-04-18.dsk (989184 bytes)
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# These are game content, not system files.
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files: []
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notes:
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architecture: >
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Custom 32-bit RISC CPU (25 MHz emulated) with 1 MB RAM (expandable to 32 MB).
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Monochrome 1-bit framebuffer. Keyboard input via PS/2 scancodes.
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SPI bus for SD card (disk image) access. Serial port for PCLink file transfer.
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boot_process: >
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CPU starts execution at ROM address 0xFFFFF800. The embedded bootloader
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reads the boot sector from the SPI disk and loads the Oberon inner core
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(modules Kernel, FileDir, Files, Modules) into RAM, then jumps to it.
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content_format: >
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Disk images (.dsk) are raw sector images read via 512-byte SPI commands.
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The core detects filesystem-only images (magic 0x9B1EA38D at sector 0)
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and adjusts the sector offset accordingly (disk.c:57-58).
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