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Microprocessor

Microprocessor
Pick out the matching pair

 SID; SIM
 READY; RIM
 S0;S1;wait status
 HOLD; DMA

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Microprocessor
How many T-states are required for execution of OUT 80H instruction?

 13
 10
 16
 7

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Microprocessor
The first machine cycle of an instruction is always

 A memory write cycle
 An I/O read cycle
 A fetch cycle
 A memory read cycle

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Microprocessor
Identify the programmable DMA controller from the following

 8279
 8253
 8257
 8251

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Microprocessor
XCHG instruction exchanges the content of H-L with ______ register pair.

 B-C
 Stack Pointer
 PSW
 D-E

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Microprocessor
The processor status word of 8085 microprocessor has five flags namely:

 S, Z, AC, P, OV
 S, OV, AC, P, CY
 S, Z, AC, P, CY
 S, Z, OV, P, CY

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