Microprocessor MCQ on 8085 & 8086 – Part 4 (Multiple Choice Questions)
Last updated on April 30th, 2023 at 04:43 pm
This is part 4 of the Microprocessor MCQ (Multiple Choice Questions) on 8085 & 8086.
This page contains question number 25 to question number 32 [out of 40 questions of this set].
Follow the links given below to find the other 4 parts of this MCQ set containing microprocessor 8085 MCQ and microprocessor 8086 MCQ.
MCQ Part 1 | MCQ Part 2 | MCQ Part 3 | MCQ part 5
Microprocessor MCQ on 8085 & 8086 – part 4
25] PSW(program status word) is a ———–register
a] 8 bits
b] 16 bits
c] 20 bits
d] 32 bits
26] The call location for TRAP interrupt is
a] 0000 h
b] 0020 h
c] 0024h
d] 0034h
27] In DMA operation,data transfer takes place between
a] Memory and CPU
b] CPU and I/O
c] I/O and Memory
d] different CPUs
28] When a subroutine is called ,the address of the instruction next to “CALL” is saved in
a] stack pointer register
b] program counter
c] stack
d] PSW
29] The vector address corresponding to software interrupt RST7 in 8085 is
a] 0017h
b] 0027h
c] 0038h
d] 0700h
30] The CWR address of 8255 PPI connected to 8085 is FBh, what will be the address for Port-A?
a] F8h
b] FAh
c] FCh
d] F9h
31] OUT 02 H is executed by
a] one machine cycle
b] two machine cycles
c] three machine cycles
d] four machine cycles
32] If a DMA request is sent o the microprocessor with a high signal to the HOLD pin, the microprocessor acknowledges the request
a] after completing the present cycle
b] immediately after receiving the signal
c] after completing the program
d] none of these
