Question

When the signal on REST IN goes low, which of the following happens in 8085?
1. The program counter is set to zero
2. The buses are tristated
3. The MPU is reset
4. All of these

Answer 1

Correct Answer - Option 4 : All of these

RESET IN: When the signal on this pin is low (0), the program-counter is set to zero, the buses are tristated and the microprocessor unit is reset.

RESET OUT: This signal indicates that the MPU is being reset. The signal can be used to reset other devices.