Hello, I have a problem with an amiga A2386 bridgeboard.
At startup it reports 3x long beeps and 2x short beeps. This indicates a problem with the DMA management.
Does anyone have experience with this? In my opinion, everything points to a defective VLSI VL82c311 chip.

Previously the card ran for about 30 minutes. When I experimented with the oscillator and other values, the card failed.

Amiga OS reports that the Janus library cannot be found.
Many thanks for the support