Basic program for Lattice ispLSI1032e

We have an old PCB based on a Lattice ispLSI1032e.
The PCB takes a trigger signal as input and outputs several other trigger signals with programmable delays. 6 digital inputs to the Lattice chip are used to set the programmable delays.
Our problem is that we have lost the documentation on how to use those 6 digital inputs to set the programmable delays.
The job is to re-develop a program for the Lattice chip and supply us with the source-code and a programmed Lattice chip so that we can put it in place on the PCB socket.
See attached document for more details