So this is a multi-part "let's get to the bottom of this" thing.
To start - I have a US NTSC TG-16, plus TG-CD. In general, everything works. The CD drive is touchy, and I have to poke it sometime to start (new gear needed I suspect - different thread I suppose), but when I pop in the system card and Ys or Valis, everything works.
I also have a "Diving board" style adapter - long, yellowish-green. It works great with my Hu-cards, but here's where it gets funny.
I've burned several backup copies of some of my Super CD / Duo games - and have used my Arcade Card Pro with the diving board adapter to try to start them.
The results are... inconsistent. Now, before I go into the Super CD game part, I'll mention that my burned backup copy of Splash Lake loads, and more-or-less works. (The music dies a second after the first boss - odd). It also works regardless of if I use the TG-CD card or the divingboard adapter & Arcade Card. It does seem that the system's not thrilled about that CD, though.
Now, trying to use the backup copies of my Super CD games is a different story. 4-in-1 starts up, and during the 'Peeewwwww' falling-down-screen start, there's a brief graphical glitch. After that, I've variously had Bonk talk and gotten the menu w/minor glitches, had bonk load and the menu be a huge mess, or get stuck with a spotlight and no bonk.
The Bonk 3 burned backup CD also behaves oddly - first time I tried it, I got intro music, but no game; just a black screen. The second time, not even that. (I've only tried twice).
So, here are my thoughts.
The CDs are 650 MB golds, Kodak media (Maxell branded, but they wereburned at 8x, the lowest I can go so far.
The "diving board" adapter doesn't have all pins connected, and from what I've read, some adapters don't work with "Arcade Card" games, due to the system not being able to use the RAM on the card.
I do *not* know if the diving board works iwth SUPER CD games, though. I'm fairly good with electronics, so I can certainly describe the pin paths on the diving board, relative to the pinout guides out there.
Also, I have no idea if the Arcade Card Pro itself works properly! I'm not sure if I've ever used it with a Duo game successfully, but I do seem to recall having done so a number of years ago, which makes me wonder about the whole RAM/pins thing But, my memory is NOT the best.
Unfortunately, what I don't have is a single real Super CD game to test with.
So, what are some thoughts / suggestions? Should the Arcade Card work with a Diving Board adapter on Super CD games? Do the issues described sound like they could just be a fiddly CD drive plus media that's not-quite-right?
Unfortunately, all of my original Super CDs are lost, stolen, or destroyed - it's absurd. (Had my Duo, a large collection of Duo & TG16 games inc Ys, Shadow of the Beast, Bonk 3, Bomberman '93, 4-in-1, etc, plus SNES, 3DO w/games and several other things along with a car stereo stolen a number of years ago. Sigh).
Of course, if any of you live in Maine in the US, I'd love to try out each other's equipment, mixed! (I'll even stick the FreeMcBoot bootloader / "softmod" onto your PS2 memory card, if that's your sorta thing).