CS609 Mid Term Current Paper (Dec 2010)
Q (5 marks)
Explain the usage of XON and XOFF is software based flow control Ans (Page # 158 , lec # 17) Q Write a function that will read the status of COM Port and return the modem line status is a unsigned int. COM port number will be passed as parameter. Q Write down the purpose of int 12H and int 15H/88H Ans : int 12H : used for memory interface int 15H/88H return = No. of kb above 1 MB Q Write down the detail of the Service (00,01,02) of int 17H which is used in printer. Ans : 00 : Display characters 01 : Initialze Printer 02 : Request printer. some questions of Another Paper. Q (2 Marks ) write stands for THR RBR DLL DLM Q write stands for. DSR DTR RTS CTS
