Is there any SMP test ROM/SPC file?

I'm writing a dinky little SPC player for funsies and I have some bugs in my SMP code. Are there any test ROMs (preferably in SPC file format -- as that's easy to load) I can use to help track them down?

I searched for forums and found a thread from back in 2012 where kevtris talked about writing one, but I didn't see a link to it in the thread, and other searches have turned up empty.

Thanks.

blargg posted a series of tests here. Initialise RAM, load them at $400 and exec from $430. Output is at $8000, quit once you get back to $FFC0.

I ran them through bsnes-plus with state poisoning and logged the output (7z, 6M) to make comparing a bit easier. I don't think they're all encompassing, but they seem to cover most of the basics.

Awesome. Thanks.

I thought you already had a full SNES emulator named Schuper?