MICROPROCESSOR (MP) May 2012 COMPUTER SCIENCE SEMESTER 5
Con. 3925-12. GN-6962
(3 Hours) [Total Marks : 100]
(2) Solve any four questions from remaining.
(3) Figures to the right indicate marks.
(4) Assume data if necessary.
| 1. (a) | Explain addressing modes of 8085 microprocessor with example. | 10 |
| (b) | What is segmented memory ? State the advantages of it wrt 8086 microprocessor. | 10 |
2. (a) | What is meant by DMA ? Show interfacing of 8237/57 with 8086 and explain. | 10 |
| (b) | Explain following instructions with one example each ( wrt 8086). | 10 |
| (i) SAL (ii) TEST (iii) STOS (iv) CMP (v) JC. | ||
3. (a) | Explain the operation of IC 8259 with block diagram. | 10 |
| (b) | Write an assembly language program for 8086 to exchange the blocks of 1 kB | 10 |
| located at 0100 H and 0200 H using string instructions. | ||
4. (a) | Explain Assembler directives of 8086. | 10 |
| (b) | What are the various modes of operation of 8255 PPI ? | 10 |
5. (a) | Explain the addressing modes of 8085 microprocessor. | 10 |
| (b) | Draw the timing diagram and explain for: | 10 |
| (i) Memory read in minimum mode | ||
| (ii) Memory write in maximum mode. | ||
6. (a) | Explain interrupts of 8086 in detail. | 10 |
| (b) | (i) Explain Generation of address and data Bus. | 5 |
| (ii) Differentiate between memory mapped I/O and I/O mapped I/O. | 5 | |
7. | Write short notes on any three :- | 20 |
| (a) RS 232 serial Interface Standard | ||
| (b) Memory Banking in 8086 | ||
| (c) 8284 Clock Generator | ||
| (d) 8288 Bus Controller. |
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