| 1. | Address line for TRAP is ? | |
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0023H
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0024H
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0033H
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0036H
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Report Question| 2. | In microprocessor based system DMA refers to ? | |
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Direct memory access for the user
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Direct memory access for the microprocessor
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Direct memory access for the microprocessor and user
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Direct memory access for the i/o devices
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| 3. | Ready pin of a Microprocessor is used ? | |
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To indicate that the microprocessor is ready to receive IP
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To indicate that the microprocessor is ready to receive O/P
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To introduce wait states
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To provide direct memory access Direct Memory Access
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| 4. | Which of the following statements with reference to a generic microprocessor is ? | |
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Instruction cycle time period is exactly equal to machine cycle time period
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Instruction cycle time period is shorter than machine cycle time period
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Machine cycle time period is shorter than instruction cycle time period
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Instruction cycle time period is exactly half of machine cycle time period
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| 5. | Program Counter (PC. register stores the) ? | |
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Address of the first memory block
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Address of the last memory block
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Address of the next instruction to be executed
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Size of the primary memory
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| 6. | In a microprocessor when interrupted, it a CPU is ? | |
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Stop execution of instructions
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Acknowledges interrupt and branches off subroutine
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Acknowledges interrupt and continues interrupt
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Acknowledges interrupt and waits for the next instruction from the interrupting device
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| 7. | Microprocessor 8085 can address location up to ? | |
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32K
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128K
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64K
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1M
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| 8. | 8085 has ..... software restarts and .............. hardware restarts ? | |
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10, 5
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8, 5
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8, 8
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16, 8
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| 9. | The highest priority in 8085 microprocessor system is ? | |
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RST 7.5
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RST 6.5
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INTR
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TRAP
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| 10. | What addressing mode is used in the instruction RET ? | |
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Direct
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Immediate
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Implicit
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Register-indirect
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