#Dreamcast *** ![Sega Dreamcast](images/dreamcast/console.png) *** _The Sega Dreamcast is a 6th generation home video game console released by Sega in 1998. It is notably the last console that Sega produced._ *** | Emulator | Rom Folder | Extension | BIOS | Controller Config | | :---: | :---: | :---: | :---: | :---: | | [Reicast](https://github.com/reicast/reicast-emulator) | dreamcast | .cdi .chd .gdi| dc_boot.bin, dc_flash.bin | /opt/retropie/configs/dreamcast/mappings | | [lr-flycast](https://github.com/libretro/flycast.git) | dreamcast | .cue .cdi .chd .gdi .m3u .zip | dc_boot.bin, dc_flash.bin | /opt/retropie/configs/dreamcast/retroarch.cfg | | [Redream](https://redream.io) | dreamcast | .cue .cdi .chd .gdi | boot.bin (optional) | /opt/retropie/configs/dreamcast/redream/mappings | | [lr-flycast-dev](https://github.com/flyinghead/flycast.git) | dreamcast,arcade | .cue .cdi .chd .gdi .m3u .zip | dc_boot.bin | /opt/retropie/configs/dreamcast/retroarch.cfg | | [Flycast](https://github.com/flyinghead/flycast.git) | dreamcast,arcade | .cue .cdi .chd .gdi .m3u .zip | dc_boot.bin | /opt/retropie/configs/dreamcast/mappings | ## Emulators * _Reicast_ can be very laggy and buggy, but it's useful for older (Pi2/Pi3) systems. Audio is choppy and not great, and degrades the longer the emulator is in use. Restarting the emulator (and ultimately the Pi) may become a good idea after a couple hours of gameplay. There is a memory leak somewhere in the Reicast code. Low screen resolution are recommended to get best performance. Performance greatly suffers if HD resolutions are used. * _lr-flycast_ can be found in the _Optional_ packages section and is recommended for the libretro integration, having also better peformance than Reicast on Pi4+ platforms. **NOTE**: this core is using an older and un-maintained version of Flycast, suitable for older RaspiOS versions. For newer RaspiOS (Bookworm and later), the _lr-flycast-dev_ core is recommended. * *Redream* can be found in the _Experimental_ packages section and runs the best of the three options. However it can only be run on a Pi4 or a 64bit PC system, due to the OpenGL(ES)3 requirement. * _lr-flycast-dev_ can be found in the _Experimental_ packages section and it's the currently maintained libretro core from the Flycast. Recommended for recent systems and RaspiOS versions and better support for Naomi/Atomiswave games. * _Flycast_ standalone emulator can be found in the _Optional_ packages section. It uses the same codebase as the _lr-flycast-dev_ core, but with it's own interface and menu. It can be used as an alternative to the libretro core for weaker systems or when trying to squeeze more performance out of the emulator. ## ROMS Accepted File Extensions: `.cue .cdi .chd .gdi` for Dreamcast games, `.zip` for Naomi/Atomiswave arcade games. Place your game files in ``` /home/pi/RetroPie/roms/dreamcast ``` Optionally, the Naomi/Atomiswave arcade ROMs can be added to ``` /home/pi/RetroPie/roms/arcade ``` and the Flycast emulator (standalone or the libretro core) can be chosen to run the specific ROMs from the [Runcommand Launch Menu](Runcommand#runcommand-launch-menu). ## CHD files All three emulators have support for the CHD (V5) archive format. This format will save space and allow you to keep your Dreamcast ROM folder tidy. See [Creating CHDs from CD-ROMS](CHD-files#creating-chds-from-cd-roms). ## BIOS The BIOS files needed are: **dc_boot.bin, dc_flash.bin**. The boot file is often found named something else, such as dc_**bios**.bin. It must be renamed to dc_**boot**.bin when placed in the BIOS folder. lr-flycast has support for the Sega Naomi and Atomiswave arcade systems but you will also need the corresponding BIOS from the MAME romset. Place your BIOS files in ``` /home/pi/RetroPie/BIOS/dc ``` BIOS files | File | Region | md5sum | CRC32 | Comment | | :----------: | :----: | :------------------------------: | :------: | :-------------: | | dc_boot.bin | World | e10c53c2f8b90bab96ead2d368858623 | 89f2b1a1 | | | dc_flash.bin | USA | 0a93f7940c455905bea6e392dfde92a4 | c611b498 | | | dc_flash.bin | Europe | 23df18aa53c8b30784cd9a84e061d008 | b7e5aeeb | | | dc_flash.bin | Japan | 69c036adfca4ebea0b0c6fa4acfc8538 | 5f92bf76 | | | dc_boot.bin | Free | d407fcf70b56acb84b8c77c93b0e5327 | 61d5613f | Hack | | dc_flash.bin | Free | 93a9766f14159b403178ac77417c6b68 | e0d202a2 | Hack | | dc_boot.bin | Free | d552d8b577faa079e580659cd3517f86 | 558f456e | atreyu187 Hack | | dc_flash.bin | Free | 74e3f69c2bb92bc1fc5d9a53dcf6ffe2 | bda0e9aa | atreyu187 Hack | | naomi.zip | World | eb4099aeb42ef089cfe94f8fe95e51f6 | c295a8c2 | NAOMI BIOS | | awbios.zip | World | 0ec5ae5b5a5c4959fa8b43fcf8687f7c | ab628024 | Atomiswave BIOS | **Note:** If you are having trouble with having to set the date/time every time you load Reicast, [see this forum post](https://retropie.org.uk/forum/post/53941) for a guide on how to replace dc_flash.bin. The MD5 of the dc_flash.bin generated from that guide should be `2f818338f47701c606ade664a3e16a8a`. **Note:** As of February 2019, the date/time prompt should appear only the 1st time Reicast is started. ## Video Setup Guide RetroPie 4.0 uses an output resolution independent render resolution of 640x480. Open `/home/pi/.reicast/emu.cfg` to modify render resolution. ## Tweaks ``` /opt/retropie/configs/all/autoconf.cfg ``` | Option | Description | Value | | ------------- | ------------------------------- | ----- | | reicast_input | enable input auto configuration | (0/1) | ## VMUs ### Reicast VMUs are stored as .BIN files under `/home/pi/.reicast/`, and will be automatically created the first time you run Reicast without VMU files. On occasion, these VMUs do not get formatted quite right during creation, and the Dreamcast can't save or load data from them. They just need to be reformatted -- run the `SYSTEMMANAGER` entry in the EmulationStation Dreamcast menu and / or see [this post](http://blog.petrockblock.com/forums/topic/configuring-controllers-in-reicast/page/2/#post-99715) for details. ### Flycast (all versions) VMUs are stored as .BIN files under `/home/pi/RetroPie/BIOS/dc/`, and will be automatically created on the emulator's first run. There is an option for the core to enable `per-game` VMU's. This option is recommended if you have several games or a game that takes a large amount of space. ### Redream VMUs are stored as `vmu[0-3].bin` files under `/opt/retropie/configs/dreamcast/redream/`. ### Management A Dreamcast soft-reset (A+B+X+Y+Start buttons at the same time) at the ROM's title screen will also take you into the Dreamcast BIOS to manage the VMU's. After formatting VMU's, exit the emulator and restart if using Reicast. Pressing 'Play' will cause Reicast to crash. ## Controls Controls for the Dreamcast emulators - except Redream - are automatically configured when you configure your controls through EmulationStation. Please notice that you may be interested in disabling the input auto config (described above) in case of any autoconfig issue for Redream. ![sega_dreamcast_diagram](images/dreamcast/controller.png) ### Reicast Controls can be mapped via the `/home/pi/.reicast/emu.cfg` file. Make sure that `evdev_device_id_1` and `evdev_device_id_2` entries are set to the corresponding controller's `/dev/input/event*` number you want to use. A `-1` means no controller, which we will use for player 3 and 4. Then have `evdev_mapping_1` & `evdev_mapping_2` entries point to the matching controller mapping configuration files and both can either point to the same file or different files if you want to use 2 different controllers types. Here is an example of this: ``` ini [input] evdev_device_id_1 = 2 evdev_device_id_2 = 3 evdev_device_id_3 = -1 evdev_device_id_4 = -1 evdev_mapping_1 = /opt/retropie/configs/dreamcast/mappings/controller_Xbox360WirelessReceiver(XBOX).cfg evdev_mapping_2 = /opt/retropie/configs/dreamcast/mappings/controller_8BitdoSNES30GamePad.cfg joystick_device_id = -1 ``` If you want to be able to use 2 controllers at the same time, then you would add this section to the `emu.cfg` file: ``` ini [players] nb = 2 ``` Using the `+Start Reicast` script launches the game menu with a _Settings_ button. Controllers can be mapped directly from ths settings menu - this creates config files looking like: ``` /opt/retropie/configs/dreamcast/mappings/evdev_Xbox360WirelessReceiver(XBOX).cfg ``` In stock configuration, access to this menu is controlled from the D-Pad of a controller with an analog stick. In the case where your controller does not have an analog stick, it may be necessary to connect one in order to access this part of the menu and create mappings for your other controllers. Some example mappings are provided below for various controllers which can be directly edited from the ``` /opt/retropie/configs/dreamcast/mappings/ ``` Folder listed above. An example mapping for a PS3 controller is below for reference: **PlayStation 3 Controller** ``` ini [PLAYSTATION(R)3 Controller] button.0=Btn_Z button.1=Btn_C button.2=Btn_D button.3=Btn_Start button.4=DPad_Up button.5=DPad_Right button.6=DPad_Down button.7=DPad_Left button.8=Axis_LT button.9=Axis_RT button.10=DPad2_Left button.11=DPad2_Right button.12=Btn_Y button.13=Btn_B button.14=Btn_A button.15=Btn_X button.16=Quit axis.0=Axis_X axis.1=Axis_Y ``` **Xbox 360 Controller:** ``` ini [emulator] mapping_name = Xbox Gamepad (userspace driver) btn_escape = 0x13a [dreamcast] btn_a = 0x130h btn_b = 0x131h btn_c = btn_d = 0x139h btn_x = 0x133h btn_y = 0x134h btn_z = 0x138h btn_start = 0x13Bh axis_x = 0x00 axis_y = 0x01 axis_trigger_left = 0x0a axis_trigger_right = 0x09 [compat] axis_dpad1_x = 0x10 axis_dpad1_y = 0x11 ``` **Xbox 360 Wireless Controller using xpad driver:** ``` ini [emulator] mapping_name = Xbox 360 Wireless Receiver (XBOX) btn_escape = 316 [dreamcast] btn_a = 304 btn_b = 305 btn_c = btn_d = btn_x = 307 btn_y = 308 btn_z = btn_start = 315 btn_dpad1_left = btn_dpad1_right = btn_dpad1_up = 704 btn_dpad1_down = 707 btn_dpad2_left = btn_dpad2_right = btn_dpad2_up = btn_dpad2_down = axis_x = 0 axis_y = 1 axis_trigger_left = 10 axis_trigger_right = 9 [compat] btn_trigger_left = 312 btn_trigger_right = 313 axis_dpad1_x = 16 axis_dpad1_y = 17 axis_dpad2_x = axis_dpad2_y = axis_x_inverted = no axis_y_inverted = no axis_trigger_left_inverted = axis_trigger_right_inverted = axis_dpad1_y_inverted = no axis_dpad1_x_inverted = no ``` **PS4 Controller** ``` ini [emulator] mapping_name = Sony Computer Entertainment Wireless Controller btn_escape = 316 [dreamcast] btn_a = 305 btn_b = 306 btn_x = 304 btn_y = 307 btn_start = 313 axis_x = 0 axis_y = 1 axis_trigger_left = 3 axis_trigger_right = 4 [compat] axis_dpad1_x = 16 axis_dpad1_y = 17 axis_x_inverted = no axis_y_inverted = no axis_trigger_left_inverted = no axis_trigger_right_inverted = no axis_dpad1_y_inverted = no axis_dpad1_x_inverted = no ``` **Akishop Ps 360+ Joystick** ``` ini [emulator] mapping_name = Akishop Customs PS360+ v1.66 btn_escape = 316 [dreamcast] btn_a = 306 btn_b = 305 btn_x = 307 btn_y = 304 btn_start = 312 [compat] axis_dpad1_x = 16 axis_dpad1_x_inverted = no axis_dpad1_y = 17 axis_dpad1_y_inverted = no btn_trigger_left = 309 btn_trigger_right = 311 ``` **8Bitdo NES30 Pro** Open the configuration file using a text editor, e.g.: ``` shell sudo nano /opt/retropie/configs/dreamcast/mappings/controller_8BitdoNES30Pro.cfg ``` The content of the file should look like this: ``` ini [emulator] mapping_name = 8Bitdo NES30 Pro btn_escape = 314 [dreamcast] btn_a = 304 btn_b = 305 btn_c = btn_d = btn_x = 307 btn_y = 308 btn_z = btn_start = 315 btn_dpad1_left = btn_dpad1_right = btn_dpad1_up = btn_dpad1_down = btn_dpad2_left = btn_dpad2_right = btn_dpad2_up = btn_dpad2_down = axis_x = 0 axis_y = 1 axis_trigger_left = 24 axis_trigger_right = [compat] btn_trigger_left = 310 btn_trigger_right = 311 axis_dpad1_x = 16 axis_dpad1_y = 17 axis_dpad2_x = axis_dpad2_y = axis_x_inverted = no axis_y_inverted = no axis_trigger_left_inverted = axis_trigger_right_inverted = axis_dpad1_y_inverted = no axis_dpad1_x_inverted = no ``` **iBuffalo Classic USB GamePad** Analog movement not supported ``` ini [emulator] mapping_name = USB,2-axis 8-button gamepad btn_escape = 294 [dreamcast] btn_a = 288 btn_b = 289 btn_x = 290 btn_y = 291 btn_start = 295 axis_x = 0 axis_y = 1 [compat] btn_trigger_left = 292 btn_trigger_right = 293 axis_x_inverted = no axis_y_inverted = no ``` **Mobile Gamepad** ``` ini [emulator] mapping_name = MobileGamePad btn_escape = 0x13a [dreamcast] btn_a = 0x130 btn_b = 0x131 btn_c = 0x136 btn_d = 0x137 btn_x = 0x133 btn_y = 0x134 btn_z = btn_start = 0x13b btn_dpad1_left = btn_dpad1_right = btn_dpad1_up = btn_dpad1_down = btn_dpad2_left = btn_dpad2_right = btn_dpad2_up = btn_dpad2_down = axis_x = 0x00 axis_y = 0x01 axis_trigger_left = axis_trigger_right = [compat] btn_trigger_left = 0x138 btn_trigger_right = 0x139 axis_dpad1_x = axis_dpad1_y = axis_dpad2_x = axis_dpad2_y = axis_x_inverted = no axis_y_inverted = no axis_trigger_left_inverted = axis_trigger_right_inverted = ``` **Mapping a Nonstandard Controller** For _Reicast_, if the controller mapping produced by EmulationStation is not correct, then a semi-manual configuration tool is provided by the emulator, which can be started from the **RetroPie** system, by opening the _RetroPie-Setup_ script and then navigating to _Configuration / tools -> reicat_. Start the input mapping script, choose the controller that needs to be configured and then - one by one - map each input on the gamepad. The script will create the necessary `.cfg` file, similar to the examples given above, in the right location. ### Flycast (standalone) Mapping a controller can be done after starting a game, by opening the emulator menu with the `Tab` key. If the gamepad has a dedicated buttons like Home/Guide/PS button, that button may work also to open the emulator's menu. **Note**: navigating between the settings menu tabs can be done through the LT/RT button (shoulder buttons) on a gamepad. When using a keyboard, navigating between tabs can be done by using positioning the cursor on tabs title line, using the left/right arrow keys to select a tab and then pressing `Space` or `Enter` to activate the tab.