Computer Microprocessor and Assembly Language

291. Which formula is used to calculate the number of memory stall cycles:

1. Reads* Read miss rate * Read miss penalty
2. Write* (Write miss rate * Write miss penalty)+write buffer stalls
3. Memory access * Cache miss rate * Cache miss penalty
4. None of these

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292. Which formula is used to calculate the number of read stall cycles:

1. Reads* Read miss rate * Read miss penalty
2. Write* (Write miss rate * Write miss penalty)+write buffer stalls
3. Memory access * Cache miss rate * Cache miss penalty
4. None of these

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293. Which formula is used to calculate the number of write stall cycles:

1. Reads* Read miss rate * Read miss penalty
2. Write* (Write miss rate * Write miss penalty)+write buffer stalls
3. Memory access * Cache miss rate * Cache miss penalty
4. None of these

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294. Which generate an interrupt to the microprocessor after a certain interval of time:

1. 8251
2. 8254
3. 8255
4. 8259

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295. Which has great important in modular programming:

1. Stack segment
2. Queue segment
3. Array segment
4. All of these

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296. Which is 16 Bit microprocessor:

1. 8088
2. 8086
3. 8085
4. All of these

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297. Which is a programmable communication interface:

1. 8255
2. 8254
3. 8251
4. 8259

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298. Which is an integral part of any microcomputer system and its primary purpose is to hold program and data:

1. Memory unit
2. Register unit
3. A and B
4. None of these

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299. Which is called superhighway:

1. Processor
2. Multiplexer
3. Backbone bus
4. None of these

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300. Which is designed to automatically manage the handshake operation:

1. 8251
2. 8254
3. 8255
4. 8259

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