Sega Mega CD ISO Hacks & Editors

[Tony H]

nighthawk, I found and tested the codes/hacks for infinite time and 100 rings and they seem to work fine. Because there are so many addresses that need to be changed, you're going to have to do the changes yourself with a hex editor. Don't worry, it's fairly easy.

For 100 rings:

Follow the exact directions in this guide for "Don't lose rings when hit": http://codehut.gshi.org/SonicCDhack.txt

The only difference will be that you'll change the 33FC000000FF1512 to 33FC006400FF1512. This will give you 100 rings every time you're hit. I know you wanted to always have 100 rings, but this will work just fine. You'll need to make this change to every occurrence of 33FC000000FF1512. There should be around 75 of them.

Inf time:

Search for every occurrence of 52210C11003C6510 and change the 5221 to 4E71. It should look like this when you're done: 4E710C11003C6510. Again, you'll need to do this around 75 times.

I only changed the first occurrence for 100 rings and infinite time and it worked fine for the first level. If you want to only change the first occurrence for 100 rings and inf time just to test it out, that might be a good idea just to make sure you're doing it right. Then you can test it on the first level.

As far as the "7 Time Stones/Good Futures" codes/patch, I have no idea what that is, or where to find them. When I get some time, I'll look into that some more.

[Tony H]

EDIT: Deleted.

[Tony H]

nighthawk, Sonic CD is a pretty big ISO (450MB). I don't think my email provider will allow attachments that big. It would be much easier if you could modify the ISO file yourself. Do you know how to use a hex editor? If so, I can probably figure out the addresses that you'll need to change.

[nighthawk]

plus i am not playing it on a emulator i am playing it on a iso or the real sega cd witch worked fine one the ppf files i got but i dont know how to convert par into a ppf patch file from scratch

[nighthawk]

i did that but i want
thease codes Have All 7 Time Stones/Good Futures FF0F20:7F00
Infinite Time FF1516:0000
Always Have 100 Rings
FF1513:0064
and i have tried to figer out par code is not the same way as hex i dont think not shure

[Tony H]

Here's a link to a guide that explains how to hack a couple things in the Sonic CD ISO: http://codehut.gshi.org/SonicCDhack.txt

[nighthawk]

This better be the only thread I see you post this request.

i have been tring to make a iso with this would some one help me
Have All 7 Time Stones/Good Futures FF0F20:7F00
Infinite Time FF1516:0000
Always Have 100 RingsFF1513:0064
can some one make me a patch
for that please

sonic cd is the par files i need help with
but want to patch it to the iso need help
i have been tring to make a iso with this would some one help me
Have All 7 Time Stones/Good Futures FF0F20:7F00
Infinite Time FF1516:0000
Always Have 100 RingsFF1513:0064
can some one make me a patch
for that please

[Helder]

Can you find codes for shining force cd.

This better be the only thread I see you post this request.

[jamie90]

Can you find codes for shining force cd.

[jamie90]

Can you find codes for shining force cd?

[Tony H]

I may work on more codes for Sonic CD, but the main problem would be that people would have to hack the ISO file themselves with a hex editor. I don't think IPS patching programs will work on large files like an ISO file. Anyways, I have a lot of vacation days coming up, so should have some free time to look into Sonic CD some more.

[47iscool]

If I remember correctly, Sonic CD uses separate programming for each level (unlike the Genesis version). To get the "never lose rings when hit" to work for all levels, you'll need to open up your Sonic CD ISO file with a hex editor and find every occurrence of "33FC000000FF1512" and change it to "6006000000FF1512". Each occurrence will probably be for a different level. Save your changes and test it out. Let me know if it works.

Alrighty thanks, will do. Have you thought about timers or one hit kill codes too? I would try to but you and Nolberto know a lot more about MC68000 than I do. Anyways great job.

I wonder if Genesis Plus GX will ever allow such codes like that to be used, you know like ROM (ISO in this case) offset patching like the Game Genie.

[Tony H]

If I remember correctly, Sonic CD uses separate programming for each level (unlike the Genesis version). To get the "never lose rings when hit" to work for all levels, you'll need to open up your Sonic CD ISO file with a hex editor and find every occurrence of "33FC000000FF1512" and change it to "6006000000FF1512". Each occurrence will probably be for a different level. Save your changes and test it out. Let me know if it works.

[47iscool]

Hey Tony, just wanted to ask a question about Sonic CD. In one of your tutorials you said you may add instructions on how to get the "never lose rings when hit" code to work on the entire Sonic CD. So, have you given any more thought?

I see that part of the data you search for in that hex string is FF1512, which is his rings address so does that mean that game might store them elsewhere when starting a new game? I've only ever started and played through 1 profile on it so I don't know how/if it (the game) changes his rings address. TBH I would love to see some more Sonic CD ISO hacks if you could.

Just a thought, I'm not the type of person who trys to push others into getting what I want like PCF did with NB82.

[hawkeyes]

alright,thank you though unless you make a money hack I think I'm through hacking this game for now though I don't know if it will be necessary with those 10 ice blades,those will bring me alot of dough lol