Which library procedure reads a 32-bit signed decimal integer from standard input?

ReadInt PROC

   Reads a 32-bit signed decimal integer from standard input, stopping when the Enter key is pressed.
   All valid digits occurring before a non-numeric character are converted to the integer value.
   Leading spaces are ignored, and an optional leading + or - sign is permitted.
   ReadInt will display an error message, set the Overflow flag, and reset EAX to zero if the value entered cannot be represented as a 32-bit signed integer.

Call args: None Return args: If OF=0, EAX = valid binary value, and SF=sign. If OF=1, EAX = 0 (invalid input) Example: .data intNum DWORD ? promptBad BYTE "Invalid input, please enter again",0 .code read: call ReadInt jno goodInput mov edx,OFFSET promptBad call WriteString jmp read ;go input again goodInput: mov intNum,eax ;store good value Notes: To read an unsigned integer, use the ReadDec procedure.
       To read in hexadecimal, use the ReadHex procedure.

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A page-replacement algorithm should minimize the number of page faults. We can achieve this minimization by distributing heavily used pages evenly over all of memory, rather than having them compete for a small number of page frames. We can associate with each page frame a counter of the number of pages associated with that frame. Then, to replace a page, we can search for the page frame with the smallest counter. a. Define a page-replacement algorithm using this basic idea. Specifically address these problems: i. What is the initial value of the counters? ii. When are counters increased? iii. When are counters decreased? iv. How is the page to be replaced selected? b. How many page faults occur for your algorithm for the following reference string with four page frames? 1, 2,3, 4, 5, 3, 4, 1, 6, 7, 8, 7, 8, 9, 7, 8, 9, 5, 4, 5, 4, 2. c. What is the minimum number of page faults for an optimal page replacement strategy for the reference string in part b with four page frames?

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