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Microprocessor

Microprocessor
The first microprocessor to include virtual memory in the intel microprocessor family is

 80386
 80286
 80486
 Pentium

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Microprocessor
The microprocessor issues ALE during first T-state of

 fetch cycle only
 memory READ cycle only
 memory WRITE cycle only
 every machine cycle

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

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

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Microprocessor
The program counter in a 8085 micro-processor is a 16-bit register, because

 It counts 16-bits at a time
 There are 16 address lines
 It facilitates the user storing 16-bit data temporarily
 It has to fetch two 8-bit data at a time

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Microprocessor
Temporary registers in 8085 are

 W and Z.
 D and E.
 B and C.
 H and L.

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Microprocessor
Identify the programmable DMA controller from the following

 8253
 8251
 8279
 8257

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