If it's not a big hassle, a pic of the back side could be useful to insure that the pinout matches the TMS-1100 and they didn't switch to another chip.
The PCB layout is extremely similar to RTD; some of the LEDs are in different locations, but the parts seem to be numbered the same, and even the jumpers are in basically the same locations.
It's interesting that the chip has 6011 printed on it; that was printed on the RTD PCB, under the chip.