I can't figure out this board?

Hello, First off I want to point out I'm completly cluelesss to macintosh
hareware as my expertise is more toward x86,Sparc, and MIPS systems.

Okay I got ahold of a Macintosh 575 Performa computer so I could get the
motherboard, and put in Macintosh Color Classic with so nicely sits on my
desk. Problem is when I pulled out the board on the 575, it looks like it
has some kind of accelrator card since it has Daystar on it, and they were
known for making those cards.

The 575 doesn't have an OS on it, and the Color Classic keeps giving me a
Bus Error , so I can't identify it that way. The card has a Motorola
68LC040 processor and a PowerPC 601 processor on it. It also has a a
daugtherboard on it that seems like memory. If you know, please tell me.