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Microprocessor

Microprocessor
In order to save accumulator value on the stack, which of the following instruction may be used

 PUSH A
 PUSH SP
 PUSH PSW
 POP PSW

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Microprocessor
A number of 1-bit registers used in microprocessors to indicate certain conditions are usually referred to as

 counters
 flags
 latches
 shift registers

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Microprocessor
During OPCODE fetch the state of S0 and S1 is

 01
 10
 00
 11

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Microprocessor
Pick out the matching pair

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

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Microprocessor
Pick up the programmable interrupt controller from the following

 8279
 8257
 8275
 8259

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Microprocessor
Which general register or general register pair is incremented/decremented by 2 during PUSH and POP instructions?

 H-L.
 Program Counter.
 D-E.
 Stack Pointer.

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