It turns out my IIsi ROM SIMM is an original MacSE/30 ROM SIMM?

The Error Code it produces is

000000C

000000F

I have´nt checked the meaning yet.

Because the ROM does not boot the system and is identical in the markings as the original SE/30 ROM SIMM I pulled out of my MacSE/30 maybe I bought an IIsi with a swaped ROM SIMM and I got the dirty ROM.

Does anyone have a ROM-SIMM from a Mac IIsi to check my version?

Edit - Thank you Gary - seems I do not have a IIsi ROM. To sad - but the IIfx ROM is running aswell.