TMS-1500


The TMS-1500 was used in a few Texas Instruments calculators, such as the TI-57, TI-55 and MBA.


TI-57

Texas Instruments programmable calculator.

full die shot at siliconpr0n

ROM array with bits overlaid updated 10/22/2017 - 4 bits fixed

raw ROM dump from siliconpr0n pic updated 10/22/2017 - 4 bits fixed

ROM dump updated 10/22/2017 - 4 bits fixed

ROM dump transcribed from patents 4078251 4079459 4100600 4107781 4125901 4164037


TI-55

Texas Instruments programmable calculator.

die shots

ROM array

ROM array with top metal removed

raw ROM dump

ROM dump


MBA

Texas Instruments programmable calculator.

ROM array

ROM array with top metal removed

raw ROM dump

ROM dump


TI-57 emulator and documentation

TI-57 emulator for PC and HP calculators

TI-57 memory map

TI-57 info

TI calculator chips


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