USING THE V0.4 BIOS
 
The options are ….
 
BOOT DVD – This will boot the backup of your choice.  Simply put in an original game, select this option.  After a few seconds of loading the TOC from the original game the BIOS will ask you to swap it with an original.  During this whole process your lid remains open, and can be closed once the swap is complete.
 
ORIGINAL BIOS (REGION FREE) – This will boot up the original GameCube BIOS and let you boot any game from any region.
 
ORIGINAL BIOS – Same as above, but will only boot games for your region.
 
CONFIGURATION MENU – (has the following sub-options)
COBRA DISPLAY MODE – (has the following sub-options, note that these options only apply to the BIOS display, not the original/backup game you are going to by booting)
                        AutoDetect – AutoDetect TV display mode
                        NTSC – NTSC display mode
                        PAL 50 Hz – PAL 50Hz display mode
                        PAL 60 Hz – PAL 60Hz display mode
            DEFAULT BOOT ACTION – (this is what will happen when the BIOS boots)
                        Display Main Menu – Displays Main Menu
                        Boot DVD – Goes directly to backup booting mode
                        Run Original BIOS – Like it says
                        Run Original BIOS (Region Free) – Like it says
            (X) KEY BOOT ACTION – (what will happen when (X) key is pressed at boot)
                        Display Main Menu – Displays Main Menu
                        Boot DVD – Goes directly to backup booting mode
                        Run Original BIOS – Like it says
                        Run Original BIOS (Region Free)
– Like it says
            LID SENSOR BEHAVIOR IN ORIGINAL BIOS –
Passthru (if your GC is assembled) – Uses the pass-through cable to determine if the lid is closed or not
Closed (if your GC is disassembled) – Doesn’t use the pass-through cable to determine is the lid is closed, tells the GC it is closed at all times
            VERSION INFO – (displays various information about your cube)
                        Original BIOS Copyrights
                        Original BIOS Region/Revision
                        Drive Version & Date
                        Cobra Version and GC Version Codes
DISC EXPLORER – This will let you browse the contents of your DVD disc
            Explore GC Disc – Browse the contents on an Original GC Disc
            Explore DVD – Browse the contents on a burnt DVD Disc
 
Using the DISC EXPLORER option to EXPLORE DVD you can run custom made GameCube executables (.DOL files), view images (JPEG) and/or update the BIOS.  See (Preparing a DVDr readable by the GameCube) for more information.
 
NOTE: Due to the BIOS register issues (See Appendix B) loading DOL’s using various methods may or may not work for you.
 
(FLASHING THE BIOS USING DVDR MEDIA)
 
Using the DISC EXPLOER to update your BIOS is pretty easy.  Just select the BIOS file (filename.vgc) and press (A) on it.  It’ll ask you if you want to flash the BIOS.  When flashing do not power off the system or you will have no choice but to flash it using the Parallel Port Flasher.
 
(HACKING THE COBRA V0.4 BIOS)
 
On Monday, February 21st, 2005 Dextrose (www.dextrose.com">##LINK##) released the fully unencrypted source code to the DVDr booting process from the Cobra v0.4 BIOS.
 
See this forum post for the specific details …
 
http://www.dextrose.com/
 
The code can be found in the \files\ directory named “anaconda04-utp.zip”
 
Basically, having this code will let others release their own BIOS’s which can boot DVDr media. Hopefully others can work out the variable issues that plague the damn process.
 
Use this code at your own risk, no responsibility is taken for its functionality
at your place or exploded/fucked up GCs, drives, vipers, users, computers, DVDs,
hamsters, cats, dogs, lost wives and everything else that may happen :-)
 
NOTE: To get a funny onscreen message while running Cobra press and hold the “Z” trigger while booting the BIOS.
 
NOTE: If you would like to program stuff for the Cobra BIOS please see the recently added devkit in the archive located at \files\viper_dev.zip