The later CPU32 Motorola chips might be helpful in figuring the LT1 TPU out. They have integrated TPU on a FPGA matrix that can also be custom microcode programmed.
Have a look at the documentation:
https://www.nxp.com/docs/en/applicat...te/TPUPN00.pdf
https://www.nxp.com/docs/en/reference-manual/TPURM.pdf