You should boot up your Amiga and access the early bootup menu by holding both mouse buttons, and see there if the accelerator is detected and showed as working.
On the other hand, the motherboard you have, 1D1 is the most compatible one regarding accelerators, so it is a bit weird.
Have you checked your ram stick? Try to boot your Amiga with the accelerator plugged and no simm fitted.
Good luck mate! I hope you find what the problem is!
