What is the purpose of the 8255 peripheral in an 8085-based microcomputer? a)         To provide serial communicationb)         To interface with external memoryc)         To control input/output devicesd)         To perform arithmetic/logical calculations

Ques 1: Explain why the number of output ports in the peripheral mapped I/O is restricted to 256 ports. Ques 2: In the peripheral mapped I/O, can an input and an output port have same address ? Ques 3: If an output and input port have same 8-bit address , how can the 8085 microprocessor differentiate between the ports ? Ques 4: Specify the two 8085 signals that are used to latch data in an output port . Ques 5: Specify the two types of pulse required to latch data in the 7475 . Ques 6: Are data latched in 7475 at the leading edge, during the level, or at the trailing edge of the enable signal ? Ques 7: Specify the 8085 signals that are used to enable an input port. Ques 8: Explain why a latch is used for an output port, but a tri state buffer can be used for an input port ? Ques 9: What are the control signals necessary in the memory mapped I/O ? Ques 10: Can the microprocessor differentiate whether it is reading from memory mapped input port or from memory ?

Draw and explain the pin diagram of the 8085 Microprocessor

In a memory mapped I/O in 8085, which of following is trueSelect oneOa Arithmetc and Logical Operations can be carried out directly with VOb. Devices have s bit addressc. Devices accessed using IN and OUT instructionsOd: 256 input and 256 output devices can be configured

The 8085 microprocessor responds to the presence of an interruptAnswer( Please choose a correct answer )   CLEARBy checking the trap pin for ‘high’ status at the end of execution of each instructionBy checking the trap pin for ‘high’ status at the end of each instruction fetchBy checking the trap pin for ‘high’ status at regular intervalsBy As soon as the trap pin becomes ‘LOW’ the trap pin for ‘high’ status at regular intervals

hich of the following statement is FALSE? A) 8085 requires +5v power supply B) 8085 requires +10v power supply C) 8085 is 8-bit general purpose microprocessor D) 8085 can operate with 3MHz clock