I electronically dumped 3F 06 5B 4F 66 6D 7D 07 7F 6F 80 1C 5E FF 00 00 and 0 1 8 9 2 3 A B 4 5 C D 6 7 E F.
I need to tweak the code a bit to get the dump working better. For Electronic QB, I had to change the voltage and/or the method to get either the entries with the status bit set, or the entries with the status bit clear. For Zodiac, I had to change the voltage. I should be able to dump all the entries at the same voltage, at least.
I got the TI-35 and opened all the calcs. It looks just like the TI Business Analyst-II. The 2 TI-55-IIs look identical, other than markings on the chips.
TI-35: 28 SDIP CD4557NL P M 8227 PHILIPPINES
TI Business Analyst-II: 28 SDIP TP0322-4NL IS 8109 PHILIPPINES
TI-55-II #1: 28 SDIP TP0456NL CD4555 M^8340
40 SDIP TP0456N2L CD4556 M^8310
TI-55-II #2: 28 SDIP CD4555NL P M 8231 PHILIPPINES
40 SDIP CD4556N2L M 8231 PHILIPPINES
Edit: I couldn't dump MP7324 so I decapped it, and it turns out it's a TMS-1400. When it warms up a bit here I'll Whink it.