Why does only ROM 2.0V work for the TI-81?
Unlike the other calculators, the TI-81's hardware was substantially altered between ROM revisions. There are two versions of the TI-81, each with incompatible hardware. At present, 2.0V is the only ROM that Emu8x has been tested with.
Q8: If a hen can lay half an egg in half a day, how many flapjacks does it take to shingle a doghouse?
A8: Give the cow 168, because TI-86-TI-82 = -168.