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Simulating a TI calculator with crazy 11-bit opcodes

This realistic simulator of a 4-function Texas Instruments calculator from 1974 runs the calculator's source code instruction by instruction by simulating the processor. The unusual processor has 11-bit opcodes, 44-bit BCD registers, and a 9-bit address bus.....

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http://files.righto.com/calculator/TI_c ... lator.html

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