Sega CD boot disc

Discussion in 'Sega Discussion' started by Valucard, Feb 17, 2018.

  1. Valucard

    Valucard funny internet animals online

    Joined:
    Feb 17, 2018
    Messages:
    6
    Likes Received:
    0
    Since the Sega CD has no copy protection, how hard could it possibly be to make a boot disc for the Sega CD for the sole purpose of booting imports and such without the need of a mod chip? I don't know anything about the subject myself but still, it can't be that hard.
     
  2. PixelButts

    PixelButts Site Soldier

    Joined:
    Aug 19, 2014
    Messages:
    2,665
    Likes Received:
    1,808
  3. Valucard

    Valucard funny internet animals online

    Joined:
    Feb 17, 2018
    Messages:
    6
    Likes Received:
    0
    You miss my point. I'm asking if anybody has developed a disc you put inside the Sega CD, which prompts you to put in your import game to bypass the region lock.
     
  4. PixelButts

    PixelButts Site Soldier

    Joined:
    Aug 19, 2014
    Messages:
    2,665
    Likes Received:
    1,808
    I got the point but I got distracted. Im sure the answer is yes or some form of gameshark allows for it. In a homebrew capacity I wouldn't know as this isn't my field of knowledge.
    Thanks for also confirming my suspiscions in regards to your profile pic.
     
    Last edited: Feb 18, 2018
    oldengineer and MBMM like this.
  5. Taijigamer2

    Taijigamer2 Gutsy Member

    Joined:
    Jun 29, 2015
    Messages:
    483
    Likes Received:
    179
    Your sharp eye for hentai is concerning :p

    I'm not sure if it's mentioned in the long thread linked above but u could probably code a disc with a region specific header and then a disc swap command. I don't think SegaCD contains a disc swap command so the other 2 options would be ripping your imports and patching them with the correct header for your region or getting an Everdrive cart and loading the required bios.
     
    PixelButts likes this.
  6. Valucard

    Valucard funny internet animals online

    Joined:
    Feb 17, 2018
    Messages:
    6
    Likes Received:
    0
    I have no idea how to code but if somebody who knew how to make something like this told me it was impossible I'd be satisfied.
     
  7. ruiner9

    ruiner9 Member

    Joined:
    Mar 17, 2013
    Messages:
    18
    Likes Received:
    4
    Buy a cheap EverDrive. You can then load up an alternate-region Sega CD/ Mega CD bios in it and play imported titles from any region, and without having to resort to modifications or disc swapping.
     
    Yakumo likes this.
  8. Valucard

    Valucard funny internet animals online

    Joined:
    Feb 17, 2018
    Messages:
    6
    Likes Received:
    0
    I'm not asking for my own sake, I'm just asking why there isn't a boot disc yet, I'm sure there are alternatives like what you said but surely a free boot disc would be a nice alternative to people who can't buy things, like kids and poor people.
     
  9. RoberMC

    RoberMC Newly Registered

    Joined:
    Mar 10, 2012
    Messages:
    2
    Likes Received:
    1
    I see three major inconvenients.

    The Mega/Sega CD has no copy protection, but it is not as simple as putting files on a CD and it will be booted. The Mega CD does not see the files on the CD, it find the code to be executed in an special boot sector which also has a table of contents by disc sector, not filenames, and the system finds the code and resources following that table. There are no public mastering tools that allow us to create a bootable CD for the Mega CD.

    There is also no "change disc" command on the Mega CD, to open the tray on the Mega CD 1 you had to press RESET which resets the main CPU on the mega drive, and if you open the lid on the Mega CD 2, a hardware switch is depressed so the console stops execution and it does not resume after closing the lid, so a hardware mod would be needed to circunvent this and allow disc swapping without resetting or halting the console execution.

    And finally, doing something like this is pointless as we have the region free bioses by I_oliveira, which can be burned into a replacement eprom, or launched by the Everdrive cartridges, with 100% compatibility. And we also have the region change patches for games, which work fairly well for most titles. Creating a CD for disc swapping would require and insane amount of work, creating mastering tools from the ground up, tuning it for maximum compatibility, as some games have special region checks, hardware modding the consoles, and after all that work... It would not bring anything new we cannot do right now with better results.
     
    Last edited: May 22, 2018
    oldengineer likes this.
  10. Arcadia

    Arcadia Robust Member

    Joined:
    Aug 24, 2016
    Messages:
    255
    Likes Received:
    125
    As a curiosity, I'm also interested if there's was one back in the days, but poor people and kids can't afford a Sega/Mega CD these days.
     
  11. Tommo92

    Tommo92 Rising Member

    Joined:
    Oct 8, 2014
    Messages:
    50
    Likes Received:
    4
    You can play import Games via patching the Disc Image and then burining it to a CD,

    Attached you will find the archive, you can also grab it from authors site https://www.retrodev.com/convscd.html

    From looking online you can get an action replay for the mega CD to play imports.
     

    Attached Files:

    Last edited: Jun 7, 2018
sonicdude10
Draft saved Draft deleted
Insert every image as a...
  1.  0%

Share This Page