Timing Diagram Of Minimum and Maximum Mode 8086

TIMING DIAGRAM of MINIMUM MODE 8086

The HOLD pin is checked at the end of each bus cycle.

If it is received active by the processor before T₄ of the previous cycle of during T₁ state of the current cycles, the CPU activates HLDA in the next clock cycle and for the succeeding bus cycles; the bus will be given to another requesting master.

The control of the bus is not regained by the processor until the requesting master does not drop the HLDA pin low.

When the request is dropped by the requesting master, the HLDA is dropped by the processor at the trailing edge of the next clock, as shown in Fig

The other conditions have already been discussed in the signal description section for the HOLD and HLDA signals.

TIMING DIAGRAM of MAXIMUM MODE 8086

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