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#include <stdio.h>
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#include <stdlib.h>
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int main(int argc, char *argv[])
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{ FILE *fp, *fp1 ;
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int i ;
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unsigned char buf [256] ; //this will hold contents of a page
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unsigned short int Addresses[512] ; //these are the randomly generated logical //addresses //against which you will run your code
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unsigned short int Current ; //current logical address generated by "CPU"
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srand(9) ; // all get same addresses
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for(i = 0; i < 512 ; i++) //generate/print addresses. Print not necessary
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{
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Addresses[i] = rand() % 65535 ;
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printf("Address is %u \n", Addresses[i]) ;
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}
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//declare RAM and init to 0s
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unsigned char RAM [64][256] = { [0 ... 63] = { [0 ... 255] = 0 } };
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// initialize contents of page
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for (i = 0 ; i < 256 ; i++)
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buf[i] = (unsigned char) i ;
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// fill in backing store ('disk'), implemented as a binary external file, with 256 pages
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fp = fopen("Back.bin", "wb") ;
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for (i = 0; i < 256 ; i++)
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fwrite(buf,256, 1, fp) ;
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fclose(fp) ;
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fp = fopen("Back.bin", "rb") ;
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// do your thing!!
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for(i = 0 ; i < 512 ; i++)
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{ Current = Addresses[I] ; //rest of program
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