Izzy's Quest For The Olympic Rings (Genesis)

[Hacc]

I wanted to post this before I went to sleep. This game has a level select cheat which should be activated by a button sequence. I looked into the ROM for the sequence a couple of times and didn't find anything useful. The most I was able to do by luck of comparing some codes I hacked for both the Genesis and SNES versions, was enable the actual cheat. Thinking outside of the box helps sometimes.

Level Select Enabled
FF03D8:0001
Note: Select your level in options under exit. Press A + B + C + Start during gameplay to soft reset the game.

I'm hoping someone is able to figure out the method with the code provided.

[nolberto82]

I found another level select and the button sequence. But the only way I could access it was by changing:

1B0D66: 0002 0002 0001 0004 2000 2000

to

1B0D66: 0002 0000 0000 0000 0000 0000

When is changed like that you press B and menu comes with a level select.
After checking a memory viewer the button sequence that I got was B,B,A,C,Down,Down.
But it doesn't work.

[Hacc]

That is interesting. Nice work! I always wondered what that text looked like on-screen. I'll look into the game some more. Where did you activate it at?

[nolberto82]

You activate it at the title screen. But I had to change the button sequence to button B to activate it.

[Hacc]

OK. Thanks! The level select I found should be activated when you pause the game like the SNES version.

[Hybrid]

apparently it was activated some time on the title screen
Enable green level select (press any button besides B on the title screen)
DJGV-0N66

[Hacc]

Thanks for the code!

[Whipon]

Got these.

[Hybrid]

Enable Level Select
AX5V-YN2C

[JLukas]

Title screen level select

When the title screen has finished loading (Start and Options text is displayed), enter the code:

B, down, down, C, A, B, B

The first button press is only used to activate the cheat entry and the actual button doesn't matter (you could use A instead of B, for example)

The rest of the code is the same as the one a few posts up but backwards, since that's how it gets written to RAM before the whole sequence comparison is done.

[Hacc]

Nice one! Is it possible for you to find out how to activate the one I found?

[JLukas]

The second level select doesn't appear to be activated from a button code. The code block that enables it is reached from a jump table when an item is collected (located right next to it is the code block for when a torch is picked up, for example) In addition, A + C buttons must be held while the item(?) is being collected for the level select to be activated. The mystery can be solved if an execute breakpoint on 1B7CC0 is triggered, but nothing found so far that does this (at least in the first few stages).

[Hacc]

Hmm... very interesting info. I'll have to try that out some time. Most likely, you or someone else here will find it before I do.

[JLukas]

Level Select

The second level select was well hidden - Youtube video. It requires taking a hidden shortcut in the first stage AND holding down a button combination while in the secret passage.

[Hybrid]

damn that has to be one of the more obtuse level select codes i've seen congrats of finding it