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

ROM dump transcribed from patents 4078251 4079459 4100600 4107781 4125901 4164037

TI-57 emulator for PC and HP calculators

TI-57 memory map

TI-57 info

TI calculator chips

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