University of Mumbai 2003 B.E Information Technology MICRO PROCESSOR - I - Question Paper

1) Attempt any 5 ques..
(2) Figures to the right indicate full marks.
(3) Give proper comments with assembly language programs.
(4) Neat diagrams must be drawn whenever necessary.
1.a) discuss the architecture of IC 8086 in detail with the help of block diagram. (15)
(b) discuss interrupt structure of 8086. (5)
2.(a) Draw the timing diagrams for:-
(i) Memory learn when CPU operated in minimum mode. (15)
(ii) Memory write when CPU operated in minimum mode.
(iii) Memory write when CPU operated in maximum mode.
(b) Differentiate ranging from minimum mode and maximum mode operation of 8086. (5)
3.(a) Write the a procedure to compute the factorial of N using recursive procedure. (10)
(b) discuss the concept of direct memory access. discuss various, operating modes supported by
IC 8237 A. (10)
4.(a) Draw the flow diagram for provided subsequent sequence of events, normal priority, and that EOI command must be output:- (10)
(i) Request on IR3. (vi) EOI to clear ISR 2.
(H) Request on IR2. (vii) EOI to clear ISR 3.
(iii) Request on IR6. (viii) If reset to 1.
(iv) If reset to 1. (ix) EOI to clear ISR 1.
(v) If reset to 1

(b) Write an 8086/8087 procedure to compute the area of a circle, presume that the integer radius is passed in register AH and return the area [rounded to closest integer] in BX :AX. (10)
(a) Design a 8086 based single board microprocessor system with subsequent specifications :- (20)
(i) 8086 CPU working at five MHz
(ii) 8087 co-processor for numeric calculations.
(iii) 64 K of EPROM memory using 16 k devices for operating software.
(iv) 256 k of S RAM using 64 k devices.
(v) 8237 DMAC controller connected in the system for DMA access for two high speeds devices.
(vi) 2 input ports and 2 output ports |all-8-bit], interrupt discuss the design. Show memory a I/O map. [ignore timing considerations]
6.(a) Draw serial communication interface diagram. discuss 2 types, of serial communications (10)
(b)What you mean by Bus arbitration ? When it is needed ? discuss various kinds of arbitration schemes.
(c)Write a program to generate a one kHz square wave at output port OD4H presume a 5MH2 8086 microprocessor. (10)
7.(a) Draw the block diagram of 8255 A and discuss its various modes of operation. (10)
(b) Write a program to generate a one kHz square wave at output port 0D4H. presume a five MHz 8086 microprocessor.. (10)
8.(a) Write short notes on:- (10)
(i) Comparison of I/O mapped I/O and memory mapped I/O. (ii) Programmed I/O and interrupt I/O.
(b) List the data kinds supported by the 8087 math co-processor.
discuss any 1 data kind in detail with an example. (10)

Earning:   Approval pending.