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Write a main program that uses these system calls to echo the typed characters. The pseudo code will look something like:
void traphandler () {
if (R0 == 0) { // read system call
R1 = getchar(); // poll the status register of the IO terminal until a char is available then load it into R1
} else if (R0 == 1) { // write system call
putchar(R1); // just store R1 to memory location 0xfff0
}
enableInterrupts();
void main() {
char c;
while (1) {
c = read(); // set R0 to 0 can issue the 'trap' instruction, result will be in R1
write(c); // set R0 to 1 and set R1 to 'c' and issue the 'trap' instruction
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C Program for FUNCTION OF DIVIDER int gcd(int , int); void main() { int m=0,n=0,k=0; clrscr(); printf("ENTER THE FIRST DIGIT: ");
Smugglers are becoming very smart day by day. Now they have developed a new technique of sending their messages from one smuggler to another. In their new technology, they are send
find the greater of the two variables, without using conditional loops or ternary operators?
#questionAt a shop of marbles, packs of marbles are prepared. Packets are named A, B, C, D, E …….. All packets are kept in a VERTICAL SHELF in random order. Any numbers of packets
Reverse a string - C ++ program: Write a program in c to reverse a string. int main() { Stack theStack; String reverse("reverse"); cout
Pebble Merchant
The program reads two numbers and a character (operator). If the character is "+" then sum is displayed. If it is "-"then difference is displayed. If it is "*" then product is disp
explain Storage management: free storage pool, garbage collection, compaction, boundary tag method; Hash tables and hashing functions
Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4
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