Since the VTU scheme changed to 2010 in Aug,2013 there are only two question papers to refer to. Dec/jan 2014 and June/July 2014.
(Word Format)
(Word Format)
1 a) What is an embedded system? Explain the purpose of ES? List its major application areas
and give one example for each.-8M b) Differentiate the following, with an example: i) Microprocessor and microcontroller ii) Embedded system and general purpose computers.-6M c) Write a requirement chart for digital camera.-3M d) List challenges of embedded computing system design. Explain briefly any two challenges. -3M 2 a) What are the major difference between Von neuman and Harward architecture?-4M b) Explain the following: i) Restrictions of MUL instruction. ii) Uses of MLA instruction iii) Register indirect addressing in ARM. iv) Write a ARM assembly code for below C- statement z=(x|22) and (y>>2) v) Disadvantages of busy-wait IO.-7M c) What is an interrupt? Explain with neat diagram the interrupt mechanism.-5M d) Solve the following: i) What is the average memory access time of machine whose hit rate is 93% with cache
access time of 5ns and main memory access time is 80ns.-4M ii) Calculate cache hit rate, if the cache access time is 5ns, average memory access
time is 6.5 ns and main memory access time is 80ns.-4M 3 a) Explain with a neat diagram, the bus with a DMA controller.-5M b) Explain the following briefly: I) Counter ii) Watchdog Timer iii) Break point iv) Timer-4M c) Differentiate PCI and USB by their characteristics.-3M d) Assume that the bus has a 1MHz bus clock period, width is 2 bytes per transfer, data
transfer itself takes 1 clock cycles, address and handshaking signals before data is 2 clock
cycles and sending ACK after data is 1 clock cycles i) What is the total transfer time in clock cycles to transfer a total 612000 bytes of data? ii) What is the total burst mode transfer time in clock cycle, if B=2 byte with 2 byte wide iii) Calculate the total real time to transfer data.-8M 4 a) Consider the following ARM assembly code, which illustrate some sample C statement.
| LDR | LDR | ADD | STR | LDR | LDR | ADD | STR | LDR | ADD | STR | LDR | LDR | SUB | STR |
| r0,a | R1,b | R2,r0,r1 | R2,w | R0,c | R1,d | R2,r0,r1 | R2,x | R1,e | R0,r1,r2 | R0,u | R0,a | R1,b | R2,r1,r0 | R2,z |
Answer the following: I) Write the sample C code fragment for the above ARM assembly code. ii) Draw a lifetime graph that shows uses of register in register allocation for the above
C statement iii) Modify the obtained C code statement using operator scheduling for register allocation iv) Draw a lifetime graph for the modified 'C' code appear. v) Write a ARM assembly code for the modified 'C' code using register allocation.-10M b) Consider the following 'C' code segment if(a>b) x=a+b; else x=a-b; I) Write CDFG for the above 'C' statement ii) Generate the ARM assembly code for the above 'C' statement.-7M c) Explain briefly different types of performance measures on programs.-3M Part-B 5 a) What is RTOS? Explain with an example the hard real time and soft real time.-6M b) Differentiate process and threads. What are the parameters of PCB of a process? Why
should each process have a distinct PCB?-8M c) What is the significance of spin lock?-2M d) What is semaphores? Explain briefly the different types of semaphores?-8M 6 a) Explain with neat diagram, the concept of memory mapped object.-8M b) Explain the following: I) Message passing ii) Remote procedure call for IPC.-6M c) What are the factors needs to be evaluated in selection of an RTOS? Explain.-6M 7 a) Explain with neat diagram the various fields of IP packet.-8M b) List the features of internet LAN.-4M c) With neat diagram, explain the various fields of CAN frame.-6M d) Briefly explain any two features of HTTP protocols.-2M 8 a) Explain the following I) Simulator ii) Target system iii) Debugging iv) Logic analyzer-8M b) Explain features advantages and limitations of simulator based debugging.-6M c) Explain the types of multitasking.-6M
Typographical errors are regretted....
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