Mattel Auto Race has a Rockwell B6000, which looks like the same B6001 that's in Battlestar Galactica, except for the ROM. There are no identifying marks on the Sears die except RMR-0012. So I'm not sure if this is a licensed Mattel cost-reduced game or if it's a knockoff.
I will trace the pinout of Break Up and post it with the other info.
I haven't composited the TMS1040 pics yet, but visually it looked similar enough to a TMS1000- ROM, RAM and PLAs in the same places. Datamath's comparison table shows all the same info as for the 1070.
