Sega Mega CD ISO Hacks & Editors

[Mezmorize]

You can make ROM codes with any system that Fusion emulates when used with Cheat Engine.
I have 10 games I've hacked in the last few months I could post.

Sol-Feace
Sonic CD
Star Blade
Star Wars: Rebel Assault
Thunderhawk
Ultraverse Prime
Vay
Wild Woody
Wolfchild
Wonder Dog

[rimsky82]

The one time I attempted hacking segacd I kept getting frustrated with the frequent paging and switching between the processors. It's not the easiest system to hack, what debugger are you using?

BTW- I believe you can use MESS to cheat with segacd. If I get a minute I'll see if I can add your cheats in it and get it to work. I still have to add SegaCD to the new site, as well as PCECD, CDi, others...

[Mezmorize]

Awesome, always hated how the Sega CD was neglected code-wise just because it didn't have a cheat device.
Would you mind if I also posted hacks in this thread.
I would rather the old thread I had made to die out since I put out a lot of bad hacks back then.

[Tony H]

RDF: Global Conflict (U) Sega CD

Start a new game with twice as much fuel. Note that picking up an extra fuel
can will cause your fuel level to drop back down to the "normal" full level,
so it's best not to pick up a fuel can until your fuel level gets below the
half way mark...
With your hex editor, search for 50B233FC2700. Change the 2700 to 4E00.


Fuel can pick-ups give you twice as much fuel...
With your hex editor, search for 4E7533FC2700. Change the 2700 to 4E00.


Infinite fuel...
With your hex editor, search for 4100029041. Change the 9041 to 4E71.

[Tony H]

EDIT:
Sega CD Editors start on page 16: https://gamehacking.org/vb/forum/vid...798#post211798

===============================

Figured I'd start a new thread for these. Will make them easier to find in the future.

Many thanks to Mezmorize for helping me out with this. Mez, you'll be glad to know that I finally put my purse down and ran CE. No problems with my Anti Virus at all.

Since there's no emulator that I know of that can use Sega CD cheat codes,
you'll have to hack the codes into your ISO file with a hex editor. I'm using
Hex Workshop, but I'm sure any hex editor will work. Just open up your ISO
file with a hex editor, click on "Find" and type in the numbers I have listed
below. Make the changes listed, save, and you're ready to go.



RDF: Global Conflict (U) Sega CD


Infinite 1.20 ammo...
With your hex editor, search for 8E4E4504790001. Change the last 01 to 00.


Infinite 7.62 ammo...
With your hex editor, search for 003A04790001. Change the last 01 to 00.


Infinite LSR ammo...
With your hex editor, search for 002E04790001. Change the last 01 to 00.


Infinite Smoke ammo...
With your hex editor, search for 006004790001. Change the last 01 to 00.


Take no damage...
With your hex editor, search for 0084DF79. Change the DF79 to 6004.