Yes, modifications to the microinstructions PLA are more common on TMS1000(SR16) and TMS0970. Touch & Tell looks like it changed much more. Here's some just from the 1st page of the patent, I think it's a bit too much to be able to construct a correct PLA. Maybe you can decap one if you find a one cheap?
default 1100 -> touch n tell
03: XMA -> TAM 3E: IMAC -> XMA 3C: SAMAN -> DCY 01: ALEM -> YNEA
Winbond? I don't think we emulate any of them in MAME.
