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3DO Interactive Multiplayer
The 3DO Interactive Multiplayer is a fifth-generation home video game console released by the 3DO Company on October 4, 1993. It retailed for $699.99. It had a RISC CPU ARM60 at 12.5 MHz with 2MB of RAM and 1MB of VRAM.
| emulator/core(s) | shortname | rom format(s) |
|---|---|---|
| libretro/opera | 3do | .iso .cue .chd |
Emulators
libretro/opera
Opera is an open-source, low-level emulator for the 3DO Game Console. Opera is a fork of 4DO, originally a port of 4DO, itself a fork of FreeDO, to libretro. The fork/rename occurred due to the original 4DO project being dormant and to differentiate the project due to new development and focus.
We use the latest libretro core.
Configuration
| setting | description | recommendation |
|---|---|---|
| 3do.high_resolution | The default internal resolution is 320×240, but the output resolution is 640×480. This feature makes the system behave as if it has a 640×480 framebuffer. | Enable and set it to 640×480 |
| 3do.cpu_overclock | The 3DO used a 12.5MHz ARM60 CPU as its central processor. The emulator has implemented a CPU overclocking feature in the Opera core so that you can increase performance up to 2x. Example video | Set it to 1.5x. May not have an impact on all games. |
| 3do.active_devices | There is a bug in which having more than 1 controller emulated causes the game not to respond to input. This allows working around the issue. | Set it to 1 when playing alone, otherwise to the number of connected players/controllers. |
| 3do.game_fixes_opera | Several game fixes and time hacks. | Leave it to auto or configure it game specific. |
ROMs
Place your 3do ROMs in /userdata/roms/3do/.
Controls
The default button mapping to the 3DO controller is as following:
- systems/3do.1622359315.txt.gz
- Last modified: 5 years ago
- by igno2k