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Microprocessor

Microprocessor
SPHL instruction copies the content of H-L register pair to the _________.

 B-C
 Stack Pointer
 PSW
 D-E

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Microprocessor
Which of the following is not treated as hexadecimal constant by assembler in 8085?

64 H
45 H
234
6 AFH

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Microprocessor
Bus Interface Unit (BIU) in 8086 performs the following functions:

 Instruction fetch.
 Instruction decoding.
 All the above.
 Arithmatic and Logic operations.

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Microprocessor
During which T-state, contents of OP code from memory are loaded into IR (Instruction Register)?

 T3 OP code fetch
 T1 OP code fetch
 T4 OP code fetch
 T2 OP code fetch

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Microprocessor
The clock speed of 8085 is

 3.2KHz.
 1KHz.
 3.2MHz.
 1MHz.

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Microprocessor
Which one of the following interrupt/interrupts is/are only level triggering?

 TRAP
 RST 5.5
 RST 6.5
 both ‘a’ and ‘b’

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