Emax

i have an emax ii in which the zilog 5380 chip that controls the scsi
has failed.  does anyone know where i might obtain this part, aside
from gutting another emax?  i believe it may have been used in some
scsi controllers for PCs around the time that the emax was produced,
but i'm not sure which ones, and scouring the net didn't turn up any
information about what scsi controllers might have a zilog 5380.

rian