I decapped the TMS0980 from the Ideal game Electronic Detective. I think it was the first product to use the TMS0980- the die says 0980B-00. The ID # on the chip is MP6100A; Stop Thief, a somewhat similar game, is ID MP6101B, and has 0980B-01A on the die. http://www.seanriddle.com/0980.html