8086 pins configuration
8086 pins configuration The description of the pins of 8086 is as follows: AD0-AD15 (Address Data Bus): Bidirectional address/data lines. These are low order address bus. They are multiplexed with data. When these lines are used to transmit memory address, the symbol A is used instead of AD, for example, A0- A15. A16 - A19 (Output): High order address lines. These are multiplexed with status signals. A16/S3, A17/S4: A16 and A17 are multiplexed with segment identifier signals S3 and S4. A18/S5: A18 is multiplexed with interrupt status S5. A19/S6: A19 is multiplexed with status signal S6. BHE /S7 (Output): Bus High Enable/Status. During T1, it is low. It enables the data onto the most significant half of data bus, D8-D15. 8-bit device connected to upper half of the data bus use BHE signal. It is multiplexed with status signal S7. S7 signal is available during T3 and T4. RD (Read): For read operation. It is an output signal. It is active when...
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