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Microprocessor

Microprocessor
DMA signal/signals in 8085 is/are

 HLDA.
 HOLD.
 READY.
 All.

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Microprocessor
The reason for the presence of ALE pin in 8085, but not in 6800 is that

 8085 has 5 interrupts lines, whereas 6800 has only two
 None
 8085 has multiplexed bus, whereas 6800 does not have
 8085 uses I/O mapped I/O, whereas 6800 uses memory mapped I/O

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

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

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

 8
 10
 4
 6

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Microprocessor
A combinational PLD with a programmable AND array and a fixed OR array is called a

 PROM
 PLD
 PLA
 PAL

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Microprocessor
RST0 - RST7 are the __________ in 8085.

 logical interrupts
 software interrupts
 conditional interrupts
 hardware interrupts

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