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Microprocessor

Microprocessor
CALL instruction is a ______ instruction.

 4 bytes
 2 bytes
 3 bytes
 1 bytes

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Microprocessor
The characteristics of RESET OUT signal is/are

 this signal can be used to reset other devices.
 the signal is synchronized to the processor clock.
 all.
 indicates that µp is being reset.

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Microprocessor
How many bytes in a zero memory page should be reserved for vectors used by RST instructions?

 32.
 64.
 16.
 128.

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Microprocessor
Total number of modes the 8253 can work

 12
 8
 6
 4

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Microprocessor
________used to implement the hardware interrupts (RST 7.5, RST 6.5, RST 5.5) by setting various bits to form masks or generate output data via the Serial Output Data (SOD) line.

 EI
 RIM
 SIM
 DI

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Microprocessor
Maximum of how many devices can be connected simultaneously to the microprocessor via 8257 in DMA data transfer mode?

 6
 10
 8
 4

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