The slave (which is selected) sends the vector on data bus after the
A. first INTA (active low) pulse from 80286
B. second INTA (active low) pulse from 80286
C. third INTA (active low) pulse from 80286
D. none of the mentioned
Answer:A
The slave (which is selected) sends the vector on data bus after the
A. first INTA (active low) pulse from 80286 B. second INTA (active low) pulse from 80286 C. third INTA (active low) pulse from 80286 D. none of the mentioned
Explanation: The interrupt acknowledge sequence consists of two INTA (active low) pulses. After the second pulse, the selected slave sends the vector on D0-D7 data lines, and 80286 reads it.