My Mac 512K started up with the sad mac icon and an error code. The error code is 01FF8F.

For what I've been able to track, this might be a ROM error. Am I right? If so, what does the FF8F part of the code mean?

My Mac has two piggy-back boards: Dove MacSnap SCSI board and a Dove MacSnap Version 5.0 RAM board.

If the problem is in the ROMs what can I do? Are these ROMs proprietary or regular Mac Plus ROMs?

Thanks.