[SOLVED] Sonic MegaMix doesn't work with my SegaCD. Anyone know why?

[MarioMania]

I thought it was only for the Genesis/Mega Drive

[aclbandit]

I thought it was only for the Genesis/Mega Drive

The old versions, yes. But the new/last release is SegaCD. They've got EU, JP, and US releases; since mine (I assume? I mean, it has no "Mega" in its name) is the US, I burned that one.

EDIT: Just tried the Japanese, and that certainly didn't work. At least the fact that my insides of my SegaCD don't look like the others I've worked on is NOT due to the fact that it thinks it's the Japanese or something.

[j_factor]

Some revisions of the Model 2 Sega CD are finicky with certain games. Mine won't play The Terminator without freezing sometime in the first level. But I've heard of other people playing The Terminator on their Model 2's with no problem. Must be a BIOS thing, or a change in parts used, or something.

[aclbandit]

Some revisions of the Model 2 Sega CD are finicky with certain games. Mine won't play The Terminator without freezing sometime in the first level. But I've heard of other people playing The Terminator on their Model 2's with no problem. Must be a BIOS thing, or a change in parts used, or something.

Damn, I was afraid of such nonsense.

But mine also has a power problem, which could be the culprit too: the cord has to be pressed up to actually power it on; I leave it against the table behind it. I'm gonna borrow my friend's SegaCD and power cord tomorrow to find out whether my problem is due to the cable or the SegaCD itself. Maybe that's also the cause of my MegaMix troubles.

I'll probably take a soldering iron to the contacts where the power connector goes in if it's not the cord, maybe repair it and get that game running at the same time.

Contained herein were my hopes and dreams for the SegaCD, all of which will likely result in the purchase of another one... dammit

[AB Positive]

If you're good with a soldering iron, you could just get a new BIOS and pop that in. If you don't have an EEProm burner just let me know how many pins it is and we could try a different bios.

I wonder if a model 1 bios would work in a model 2...

[FABombjoy]

If you don't have an EEProm burner just let me know how many pins it is and we could try a different bios.

27c1024, 40-pin DIP. If your plan is to download a BIOS and burn it, you'll need to swap the high/low bytes. There's an old Sega CD multibios thread in the tech forum where we discuss the particulars

[aclbandit]

27c1024, 40-pin DIP. If your plan is to download a BIOS and burn it, you'll need to swap the high/low bytes. There's an old Sega CD multibios thread in the tech forum where we discuss the particulars

I can solder it, given a working chip and told where pin 1 goes. I cannot, however, burn EPROM or even provide assistance of such nonsense, as I have no idea how that works.

Though it would be awesome to learn ^^