The TMS-1500 was used in a few Texas Instruments calculators, such as the TI-57, TI-55 and MBA.
Texas Instruments programmable calculator.
full die shot at siliconpr0n
ROM array with bits overlaid
raw ROM dump from siliconpr0n pic
ROM dump transcribed from patents 4078251 4079459 4100600 4107781 4125901 4164037
TI-57 emulator for PC and HP calculators
TI-57 memory map
TI calculator chips
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