DreamDash BIOS

DreamDash is a replacement BIOS for Dreamcast power users and developers. It requires KallistiOS to build.

Functionality

• Launch binaries directly from SD card or IDE drive
• dcload-ip and dcload-serial binaries embedded directly into ROM
• Menu entries appear for DreamShell or RetroDream if found on SD or IDE device
• Configurable to auto-boot into a particular application
• Launch games or applications from GD-ROM drive
• Choose between light or dark wallpaper theme
• Choose between retail or devkit style intro
• Support for Dreamcast consoles with 32MB RAM
• Build as a BIOS, a standalone binary utility, or a CD image

Issues/Limitations

• BIOS image will not work if stripped binary size is larger than roughly 500KB
  • Build your KallistiOS, kos-ports, and DreamDash with -Os and -flto=auto to help stay below this limit
  • Always have a backup BIOS image on your console for recovery if flashing to console
• Certain older homebrew is not compatible with consoles using a custom BIOS without patching
  • This applies equally for launching from CD, SD, or IDE
• Phantasy Star Online Ver 2's anti-cheat tamper protection causes bugs when launched via this BIOS

Acknowledgements

• KallistiOS and DreamShell - kernel and drivers for the underlying operating system
• Cpajuste - Dreamboot, from which this project was originally forked
• Troy D. Hanson & Arthur O'Dwyer - ut* C structures libraries