1
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.
2
GATE ECE 1988
MCQ (Single Correct Answer)
+1
-0.3
For a microprocessor system using I/O-mapped I/O the following statement(s) is NOT true
A
Memory space available is greater.
B
Not all data tranfer instructions are available
C
I/O and Memory address spaces are distinct.
D
I/O address space is greater.
3
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
4
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
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