Microprocessor & Micro‑controller (EX-602) - Important Questions

Explain the internal architecture / block diagram of 8086 microprocessor including roles of EU and BIU in instruction execution.

Derive, draw and explain the timing diagram for 8086 memory read and write operations in minimum mode.

Explain the various addressing modes of the 8086 microprocessor with suitable examples.

Write an 8086 assembly language program for addition of a series of 100 8-bit numbers stored in memory. Explain the logic and registers used.

Explain the working and architecture of the 8257 DMA controller with block diagram, including importance of DMA and priority and control signal management.

Differentiate between memory-mapped I/O and isolated (peripheral-mapped) I/O, including advantages and disadvantages.

Draw the block diagram of 8255A programmable peripheral interface and discuss its architecture. Explain each block and its working.

Explain the interrupt structure of the 8051 microcontroller, including associated registers and priority handling when multiple interrupts occur simultaneously.

Explain the various addressing modes of 8051 with examples and supporting instructions. Why is direct addressing preferred in many cases?

Explain the memory organization of the 8051 microcontroller with diagram.

Explain interfacing of 8051 microcontroller with ADC and DAC, including need, block diagram, interfacing circuit and applications.

Explain the serial communication modes of 8051. Compare mode 1 and mode 3 in terms of control, baud rate and applications.

Draw and explain the functional block diagram of the 8096 microcontroller.

What is the memory status of 8096 microcontroller? Explain the complete 8096 instruction set in detail.

Write short notes on any two of the following: (i) Control and status registers of 8096 microcontroller (ii) Stack structure of 8086 (iii) Programmable interval timer 8254.