30f
#include <stdio.h>
#include <dos.h>


main(int argc, char **argv)
{
	unsigned int far *vecbase = MK_FP(0x0000, 0x0000);
	int int_num;

	if(argc == 1) {
		printf("INTVEC  Shows interrupt vector for an interrupt\n");
		printf("usage: intvec <IntNum | X>\n");
		printf("X shows all 256 interrupt vectors\n");
		exit(0);
	}

	if((argv[1][0] == 'x') || (argv[1][0] == 'X')) {
		for(int_num = 0; int_num < 256; int_num++) {
			printf("INT %02Xh vector = ", int_num);
			printf("%04X:%04X\n",vecbase[int_num * 2 + 1],vecbase[int_num * 2]);
		}
	} else {
		if(sscanf(argv[1],"%X", &int_num)) {
			printf("INT %02Xh vector = ", int_num);
			printf("%04X:%04X\n", vecbase[int_num * 2 + 1], vecbase[int_num * 2]);
		} else
			printf("Error: bad number\n");
	}
}
.

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