sec.c

Go to the documentation of this file.

 
#include <types.h>
 
int stoi(const char* str) {
    char pows[] = {1, 10, 100};
    size_t num = 0;
    size_t size = 0;
    for(; str[size] != 0; size++) {}
    size--;
 
    for(size_t i = 0; str[i] != 0; i++)
        num += pows[size - i] * (str[i] - '0');
    return num;
}
 
__start int main() {
    char* param1 = NULL;
    char* param2 = NULL;
    for(int i = 0; * (char*)(0x80 + i) != 0; i++) {
        if(*(char*)(0x80 + i) == ' ') {
            *(char*)(0x80 + i) = 0;
            param1 = 0x80;
            if(*(char*)(0x81 + i) != 0)
                param2 = 0x81 + i;
            break;
        }
    }
    if(param2 == NULL)//if provided less than 2 parameters
        return -1;
 
    int track = stoi(param1);
    int sector = stoi(param2);
 
    char disk[512];
    asm("int 0x13\n"::"a"(0x0201), "b"(disk), "c"(track<<8 | sector), "d"(0));
    for(int i = 0; i < 512; i++)
        asm("int 0x20"::"a"(disk[i]));//putc
 
    asm("int 0x20"::"a"('\n'));//newline
 
    return 0;
}