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Categories >> Software >> Embedded Systems >> 86 Family
 
 


 

 
 86 Family interview questions  86 Family Interview Questions (53)
 VLSI interview questions  VLSI Interview Questions (200)
 DSP interview questions  DSP Interview Questions (9)
 Embedded Systems AllOther interview questions  Embedded Systems AllOther Interview Questions (24)
Question
What is PSW?
 Question Submitted By :: 86-Family
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
program status word.... a reg in the
microcontroller/microprocessor s showing the current current
status of alu operation

eg: if a carry is generated after an alu operation ,the
corresponding carry flag bit in this reg will set 1.

like if the result is a zero, then the zero flag is set...
 
Is This Answer Correct ?    67 Yes 22 No
Geo
 
Answer
# 2
5 bits indicate the 5 status flags and 3 bits are
undefined. The combination of these 8 bits is called
Program status Word(PSW). PSW and the accumulator are
treated as a 16 bit stack pointer
 
Is This Answer Correct ?    65 Yes 21 No
Pratik
 
 
 
Answer
# 3
PSW is program status word. it contains various flags like
sign, zero, carry, auxillary carry, and parity . these
flags are affected by result of ALU.
 
Is This Answer Correct ?    18 Yes 5 No
Saravanan
 
Answer
# 4
PSW stands for Program Status Word, it is 16-bits hardware
register that maintains the status of program being
executed. It shows the current status of ALU operation.
[psw]<- [A]+[flag]
 
Is This Answer Correct ?    16 Yes 5 No
Mahim Nimbawat
 
Answer
# 5
The Program Status Word (PSW) contains status bits that
reflect the current CPU state
 
Is This Answer Correct ?    7 Yes 3 No
Santhoshi
 
Answer
# 6
program status word.... a reg in the
microcontroller/microprocessor s showing the current current
status of alu operation

eg: if a carry is generated after an alu operation ,the
corresponding carry flag bit in this reg will set 1.

like if the result is a zero, then the zero flag is set...
 
Is This Answer Correct ?    12 Yes 11 No
Md Riyaz Alam
 
Answer
# 7
PSW stands for Program Status Word, it is 16-bits hardware
register that maintains the status of program being
executed. It shows the current status of ALU operation.
 
Is This Answer Correct ?    7 Yes 6 No
Noor
 
Answer
# 8
In computer ,the program status word is an area of memory or a hardware register which contains information about program stateused by the operating system and the underlying hardware.It will normally include a pointer(address)to the next instruction to be executed. 
Is This Answer Correct ?    3 Yes 6 No
Dhananjay Mishra
 
Answer
# 9
program status word.... a reg in the
microcontroller/microprocessor s showing the current current
status of alu operation

eg: if a carry is generated after an alu operation ,the
corresponding carry flag bit in this reg will set 1.

like if the result is a zero, then the zero flag is set...
 
Is This Answer Correct ?    3 Yes 8 No
Vikrant Devendra Musale
 
Answer
# 10
PSW is a 8-bit register. 5 bit indicates status of 5 flags.
3 bits are user definable.
 
Is This Answer Correct ?    21 Yes 27 No
Nandhini. R
 

 
 
 
Other 86 Family Interview Questions
 
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Give a circuit to divide frequency of clock cycle by two ?   6
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In a processor these are 120 instructions . Bits needed to impliment this instructions [a] 6 [b] 7 [c] 10 [d] none Wipro 2
What is the role of segment register?   5
How do you detect if two 8-bit signals are same? Intel 5
What are tri-state devices and why they are essential in a bus oriented system? Keane-India-Ltd 1
Which type of architecture 8085 has? Sasken 6
In 8085 microprocessor READY signal does.which of the following is incorrect statements [a]It is input to the microprocessor [b] It sequences the instructions Wipro 2
What are set up time & hold time constraints What do they signify Which one is critical for estimating maximum clock frequency of a circuit? AMD 1
Explain RC circuit?s charging and discharging? Epsilon 5
Design a divide-by-3 sequential circuit with 50% duty circle?   1
 
For more 86 Family Interview Questions Click Here 
 
 
 
 
 


   
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