The function of the pins S2, S1 & S0 of 8086.

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written 9.4 years ago by

teamques10 ★ 70k

modified 3.1 years ago by

sagarkolekar ★ 11k

microprocessors and microcontrollers

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written 9.4 years ago by

teamques10 ★ 70k

• modified 9.4 years ago

$ \overline{S_2} - M / \overline{IO}$

In minimum mode, it carries the $M/ \overline{IO}$ signal to distinguish between memory and IO access.
In maximum mode, it carries the $\overline{S_2}$ signal. $\overline{S_2}$ is a status signal given to 8288.

$ \overline{S_1} - DT/ \bar{R}$

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