1
GATE ECE 1993
MCQ (Single Correct Answer)
+1
-0.3
In a microcomputer, wait states are used to
A
make the processor wait during a DMA operation
B
make the processor wait during an interrupt processing
C
make the processor wait during a power shutdown
D
interface slow peripherals to the processor
2
GATE ECE 1992
MCQ (More than One Correct Answer)
+1
-0.3
In an 8085 microprocessor system with memory mapped I/O,
A
I/O devices have 16 bit addresses
B
I/O devices are accessed using IN and OUT instructions
C
there can be a maximum of 256 input devices and 256 output devices
D
arithmetic and logic operations can be directly performed with the I/O data.
3
GATE ECE 1988
MCQ (Single Correct Answer)
+1
-0.3
A 8bit $$\mu $$p has 16bit address bus. A 1KB memory chip is interfaced to processor as shown ib figure. The address range for the chip is _____________. GATE ECE 1988 Microprocessors - Pin Details of 8085 and Interfacing with 8085 Question 1 English
A
F000FH - F40EH
B
F100H - F4FFH
C
F000H - F3FFH
D
F700H - FAFFH
4
GATE ECE 1988
MCQ (Single Correct Answer)
+1
-0.3
A microprocessor with a 16-bit address bus is used in a linear memory selection configuration (i.e. Address bus lines are directly used as chip selects of memory chips) with 4 memory chips. The maximum addressable memory space is
A
64k
B
16k
C
8k
D
4k
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