mirror of
https://github.com/Abdess/retroarch_system.git
synced 2026-04-13 12:22:33 -05:00
d2adde9846
add core_classification, cores, upstream fields. fix false aliases (fixnes, fsuae, gearboy, higan_sfc, higan_sfc_balanced, potator, quicknes). add new profiles (fbneo_neogeo, flycast_gles2, genesis_plus_gx_wide). remove verbose notes and disclaimers.
51 lines
1.6 KiB
YAML
51 lines
1.6 KiB
YAML
emulator: "emux (NES)"
|
|
type: libretro
|
|
source: "https://github.com/libretro/emux"
|
|
profiled_date: "2026-03-19"
|
|
core_version: "0.1"
|
|
display_name: "Nintendo - NES / Famicom (Emux NES)"
|
|
cores:
|
|
- emux_nes
|
|
systems:
|
|
- nes
|
|
|
|
notes: |
|
|
emux is a multi-system emulator by Sebastien Ronsse, supporting CHIP-8,
|
|
Game Boy, NES, and Sega Master System as separate libretro cores.
|
|
|
|
The NES core does not require any BIOS or firmware files.
|
|
The .info declares no firmware_count.
|
|
|
|
The NES has no boot ROM. CPU starts at the reset vector address
|
|
stored at 0xFFFC-0xFFFD (cpu/rp2a03.c RESET_VECTOR).
|
|
|
|
Cartridge loading in controllers/mapper/nes_mapper.c:
|
|
- iNES header parsed (magic 0x1A53454E)
|
|
- Mapper number extracted from flags6/flags7
|
|
- Supported mappers: NROM (0), MMC1 (1), MMC3 (4)
|
|
- PRG-ROM and CHR-ROM mapped via file_map(PATH_DATA, ...)
|
|
|
|
Memory map from mach/nes.c:
|
|
CPU bus:
|
|
0x0000-0x07FF WRAM (2 KB, mirrored to 0x1FFF)
|
|
0x2000-0x2007 PPU registers (mirrored to 0x3FFF)
|
|
0x4000-0x4013 APU registers
|
|
0x4014 Sprite DMA
|
|
0x4016-0x4017 Controller ports
|
|
0x6000-0x7FFF SRAM
|
|
0x8000-0xFFFF PRG-ROM
|
|
|
|
PPU bus:
|
|
0x0000-0x1FFF CHR-ROM/RAM (pattern tables)
|
|
0x2000-0x2FFF VRAM (nametables, 4 KB)
|
|
0x3F00-0x3F1F Palette RAM
|
|
|
|
system_directory obtained via RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY
|
|
(libretro/libretro.c:23-25) but not used for any file loading.
|
|
|
|
is_experimental=true. No save states, rewind, or netplay support.
|
|
Supported extensions: nes, bin, rom.
|
|
|
|
files: []
|
|
# No BIOS, firmware, or system files of any kind.
|