MICROPROCESSOR (MP) DECEMBER 2012 COMPUTER SCIENCE SEMESTER 5
Con.7602-12. KR-5093
(3 Hours) [Total Marks : 100]
N.B: (1) Question No. 1 is compulsory.
(2) Attempt any four questions out of six questions.
| 1. (a) | Explain the following Intel 8086 assembly language instructions giving example :- | 10 |
| (a) TEST | ||
| (b) DAA | ||
| (c) STOS | ||
| (d) SAR | ||
| (e) JC. | ||
| (b) | Explain the interrupt structure of the 8085 microprocessor with a neat diagram. | 10 |
2. (a) | Explain addressing modes of 8085 microprocessor with example. | 10 |
| (b) | Explain assembler directives of 8086. | 10 |
3. (a) | Explain the different bus arbitration techniques with their advantages and | 10 |
| disadvantages | ||
| (b) | Write an assembly language program for 8086 to transfer the block of 1 KB | 10 |
| located at 0100 H to 02 00H using string instructions. | ||
4. (a) | Explain the necessity of a bus controller in 8086 maximum mode operation. Also | 10 |
| explain the 8288 bus controller in detail. | ||
| (b) | What is segmented memory ? State the advantages of segmented memory with | 10 |
| reference to the 8086 microprocessor. | ||
5. (a) | Explain the concept of DMA. Show and explain an interfacing diagram of the | 10 |
| 8086 with the 8237 DMA controller. | ||
| (b) | Explain the operating modes of 8255 PPI. Also, explain the handshaking | 10 |
| operation for input and output in mode 1. | ||
6. (a) | Design an 8086 based system with the following specifications. | 10 |
| (i) 8086 is in minimum mode | ||
| (ii) 64 kbyte EPROM using 52 KB devices | ||
| (iii) 64 kbyte RAM using 32 KB devices. | ||
| Draw the complete schematic of the design indicating address map. | ||
| (b) | Explain the operation of IC 8259 with block diagram. | 10 |
7. | Write short notes on any four of the following :- | 20 |
| (a) RS 232 serial interface standard | ||
| (b) Difference between memory mapped I/O and I/O mapped I/O | ||
| (c) IEEE 488 GPIB | ||
| (d) 8284 clock generator | ||
| (e) String instructions in 8086 | ||
| (f) Addressing modes of 8086. |
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