/******************************************/
/*      Converts 256x192 XBM files        */
/*         to Elktronics EPROMS           */
/*            KD2BD Software              */
/*               28-Jul-95                */
/* Copyright 1998  by John A. Magliacane  */
/******************************************/

#include <stdio.h>

FILE *infile, *outfile;

int rotate (x)
int x;
{
	int output=0;

	if ((x==0) || (x==255))
		output=x;
	else
	{
		if (x&128)
			output+=1;
		if (x&64)
			output+=2;
		if (x&32)
			output+=4;
		if (x&16)
			output+=8;
		if (x&8)
			output+=16;
		if (x&4)
			output+=32;
		if (x&2)
			output+=64;
		if (x&1)
			output+=128;
	}

	return (output);
}

void main (argc,argv)
int argc;
char *argv[];
{
	int count, input, output;
	char loop, dummy, line[80];

	if (argc==4)
	{
		outfile=fopen(argv[3],"wb");
		
		for (loop=1; loop!=3; loop++)
		{
			infile=fopen(argv[loop],"rb");
	
			fgets(line,80,infile);
			fgets(line,80,infile);
			fgets(line,80,infile);
			
			printf("Reading %s...\n",argv[loop]);			
			
			for (count=0; count<6144; count++)
		        {
				fscanf(infile,"%i%c",&input,&dummy);
				output=rotate(input)^255;
				fprintf(outfile,"%c",output);
			}
		
			for (count=6144; count<8192; count++)
				fprintf(outfile,"%c",255);

			fclose(infile);
		}
		fclose(outfile);
		printf("%s created!\n",argv[3]);
	}
	else
		fprintf(stderr, "Usage: src1.xbm src2.xbm dest.bin\n");
        
	exit(0);
}