The 3DO Company - 3DO (4DO)Link
4DO is an open-source, low-level emulator for the 3DO Game Console based on the FreeDO source code.
The 4DO core has been authored by
- FreeDO team
The 4DO core is licensed under
A summary of the licenses behind RetroArch and its cores have found here.
Required or optional firmware files go in the frontend's system directory. One of the following system BIOSes is required to run software.
|panafz1.bin||Panasonic FZ-1 BIOS||f47264dd47fe30f73ab3c010015c155b|
|panafz10.bin||Panasonic FZ-10 BIOS||51f2f43ae2f3508a14d9f56597e2d3ce|
|panafz10-patched.bin||Panasonic FZ-10 [RSA Patch]||1477bda80dc33731a65468c1f5bcbee9|
|goldstar.bin||Goldstar GDO-101M BIOS||8639fd5e549bd6238cfee79e3e749114|
|sanyotry.bin||Sanyo IMP-21J TRY BIOS||35fa1a1ebaaeea286dc5cd15487c13ea|
|3do_arcade_saot.bin||Shootout At Old Tucson BIOS||8970fc987ab89a7f64da9f8a8c4333ff|
|rom2.bin||Kanji ROM (optional)||b8dc97f778a6245c58e064b0312e8281|
Content that can be loaded by the 4DO core have the following file extensions:
RetroArch database(s) that are associated with the 4DO core:
Frontend-level settings or features that the 4DO core respects.
The 4DO core's library name is '4DO'
The 4DO core saves/loads to/from these directories.
Frontend's Save directory
|*.srm||Per game NVRAM|
|3DO.nvram.tmp||Only used for atomic saves|
Frontend's State directory
Geometry and timingLink
- The 4DO core's core provided FPS is 60
- The 4DO core's core provided sample rate is 44100 Hz
- The 4DO core's base width is 320 when the 'High Resolution' core option is set to disabled.
- The 4DO core's base height is 240 when the 'High Resolution' core option is set to disabled.
- The 4DO core's max width is 320 when the 'High Resolution' core option is set to disabled.
- The 4DO core's max height is 240 when the 'High Resolution' core option is set to disabled.
- The 4DO core's base width is 640 when the 'High Resolution' core option is set to enabled.
- The 4DO core's base height is 480 when the 'High Resolution' core option is set to enabled.
- The 4DO core's max width is 640 when the 'High Resolution' core option is set to enabled.
- The 4DO core's max height is 480 when the 'High Resolution' core option is set to enabled.
- The 4DO core's core provided aspect ratio is 4/3
The 4DO core has the following option(s) that can be tweaked from the core options menu. The default setting is bolded.
Settings with (Restart) means that core has to be closed for the new setting to be applied on next launch.
CPU overclock [4do_cpu_overclock] (1.0x (12.50Mhz)|1.1x (13.75Mhz)|1.2x (15.00Mhz)|1.5x (18.75Mhz)|1.6x (20.00Mhz)|1.8x (22.50Mhz)|2.0x (25.00Mhz))
The 3DO used a 12.5MHz ARM60 CPU as its central processor. We have implemented a CPU overclocking feature in the 4DO core so that you can increase performance upto 2x.
May not have an impact on all games.
High Resolution [4do_high_resolution] (disabled|enabled)
Internal resolution is 320x240. This feature makes the system behave as if it has a 640x480 framebuffer.
High Resolution - disabled
High Resolution - enabled
NVRAM Storage [4do_nvram_storage] (per game|shared)
Choose whether NVRAM saves are per game or NVRAM saves are shared between all games.
Look at the Directories section for more information.
Button X also acts as P [4do_x_button_also_p] (disabled|enabled)
Normally P is by default mapped to Start. This option will also map P to X. This is useful in fighting games such as Super Street Fighter II Turbo.
Controller Count [4do_controller_count] (1|2|3|4|5|6|7|8)
There is a bug (maybe in 4DO but possibly in certain games) in which having more than 1 controller emulated causes the game not to respond to input. This allows working around the issue.
Timing Hack 1 (Crash 'n Burn) [4do_hack_timing_1] (disabled|enabled)
Enable this to fix Crash 'n Burn.
Timing Hack 3 (Dinopark Tycoon) [4do_hack_timing_3] (disabled|enabled)
Enable this to fix Dinopark Tycoon.
Timing Hack 5 (Microcosm) [4do_hack_timing_5] (disabled|enabled)
Enable this to fix Microcosm.
Timing Hack 6 (Alone in the Dark) [4do_hack_timing_6] (disabled|enabled)
Enable this to fix Alone in the Dark.
Graphics Step Y Hack (Samurai Shodown) [4do_hack_graphics_step_y] (disabled|enabled)
Enable this to fix Samurai Shodown's background rendering.
|User 1 - 2 Remap descriptors||RetroPad Inputs|