Elmer, any word from Krikzz on the information you need?
Nothing back from KRIKzz on his forums, and he hasn't decided to just send me a PM instead.
As I've said, I no longer own a TED1, so I can't do any tests myself, but I can create a test ROM that will let you know if there's a "serious" problem ... if someone wants to run it.
At this point, from what I've seen (without the evidence to be certain), I'm guessing that the TED1 doesn't have any way to map out the top 512KB of cartridge space, and so will have the
some kind of bus-fighting going on when you run a Super System Card image.
For clarity ... this is ONLY when you run a Super System Card image, and all the time afterwards until you turn the power off.
From my 30+ year old half-remembered knowledge of electronics, the bus-fighting
may not be
too bad if the top 512KB of TED1 flash-ROM is cleared to $FF (which is the default when it is cleared).
You'd need someone with real electronics training to say if that's really the case with the CMOS electronics on the PC Engine.
Either way ... there's not much that DUO/DUO-R/SuperCDROM owners with a TED1 can do.
You either take the risk of running the unmodified Super System Card image, or you remove the TED1 before you play any SCD games.
Stone Age Gamer specifically warns against removing/inserting the TED1/TED2 too much because it is just slightly thicker than original HuCards and constant removal/insertion may damage your cartridge slot.
That's another reason why I wanted a "safe" version of the Super System Card to run on my TED2 ... I just want to leave it plugged-in, and only remove it to run Arcade Card games (i.e. Sapphire).
