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Replies to This Discussion


Mostly mcqs were from MOAZZ  file

 what is the purpose of service 1 and 2 of 14h  

draw structer of c  status rigester 

A function that will send com port number will be accessed as parameter 

baqi yaad nahi a raha but jo papers share howay hai is mai say tha kafi kuch aya hai thanks for every one who share paper here

Sheikh Usman  thanks 

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  plz koi current paper solve kr k dy dy plz plz plz....

     mra kal ko paper hai plz

Assalam o ALikm

Thnx to all

Jis bro or sis ko jin Q k anser ate hn zror zror 

share kr dia kren.



thnx to all fellows and friends for sharing current papers, nice work done by every one. thnx again

thanks guys for sharing paper

ALLAH ap ko es ki jaza da.ammen 

plz anyone explain this

((( inport((*lpt) +1)) & 0x80) == 0x80)

 which condition is checked?


Explain this condition?

unsigned int far * lpt = (unsigned int far *)0x00400008;----Direct parallel port programming LPTs swapping

((( inport((*lpt) +1)) & 0x80) == 0x80)

((( inport((*lpt) +1)) & 0x80) == 0x80)

Condition will check whether the printing port is idle or not.

see page #97 for more detail.

unsigned int far * lpt = (unsigned int far *)0x00400008

Here we are accessing the base register address of LPT1 that is on the 40 segment 08 offset

for more info chk page # 91,92 of handbook

thanks RaJa AhMeD

Thx Alot , May Allah bless you

Assalam o Alikm


60 % MCQ’s From Past Papers

Q.1:  write down the purpose of interrupt 11H.

Q.2: When we dicuss flow control using RS232C. Which line are used for data transmission and reception?

Q.3: What the usage of coprocessor control word while testing for coprocessor?

Q.4: Suppose we have got the status byte of LPT1 port usig BIOS function int 17H.Write the condition in C language that can check the time out, transfer error and out of paper error.

Q.5: Draw the status of Clock Status C register.

Q.6: Explain the purpose of UART. 




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