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


  

 
 86 Family interview questions  86 Family Interview Questions
 VLSI interview questions  VLSI Interview Questions
 DSP interview questions  DSP Interview Questions
 Embedded Systems AllOther interview questions  Embedded Systems AllOther Interview Questions
Question 
What is PSW?
 Question Submitted By :: Nalini C K
I also faced this Question!!     Rank Answer Posted By  
 
  Re: What is PSW?
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 ?    65 Yes 21 No
Geo
 
  Re: What is PSW?
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 ?    61 Yes 18 No
Pratik
 
 
 
  Re: What is PSW?
Answer
# 3		 PSW is a 8-bit register. 5 bit indicates status of 5 flags.
3 bits are user definable. 
Is This Answer Correct ?    18 Yes 22 No
Nandhini. R
 
  Re: What is PSW?
Answer
# 4		 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 ?    11 Yes 11 No
Md Riyaz Alam
 
  Re: What is PSW?
Answer
# 5		 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 ?    17 Yes 5 No
Saravanan
 
  Re: What is PSW?
Answer
# 6		 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
 
  Re: What is PSW?
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.
[psw]<- [A]+[flag] 
Is This Answer Correct ?    14 Yes 5 No
Mahim Nimbawat
 
  Re: What is PSW?
Answer
# 8		 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
 
  Re: What is PSW?
Answer
# 9		 The Program Status Word (PSW) contains status bits that
reflect the current CPU state 
Is This Answer Correct ?    6 Yes 3 No
Santhoshi
 
  Re: What is PSW?
Answer
# 10		 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 5 No
Dhananjay Mishra
 

 
 
 
Other 86 Family Interview Questions
 
  Question Asked @ Answers
 
write an assembly code which can call function in a loop with al value from 0 to 9 Google5
What are set up time & hold time constraints What do they signify Which one is critical for estimating maximum clock frequency of a circuit? AMD1
Which type of architecture 8085 has? Sasken6
Draw a Transmission Gate-based D-Latch?  1
7. What are tri-state devices and why they are essential in a bus oriented system? Wipro4
Design a divide-by-3 sequential circuit with 50% duty circle?  1
Explain RC circuit?s charging and discharging? Epsilon5
What are the different flags in 8085? TCS21
Why are program counter and stack pointer 16-bit registers? HCL2
Return address will be returned by function to Wipro1
In a processor these are 120 instructions . Bits needed to impliment this instructions [a] 6 [b] 7 [c] 10 [d] none Wipro2
How many memory locations can be addressed by a microprocessor with 14 address lines? HCL5
 
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