#include <stdio.h>
#include <stdlib.h>

static char buf[262144];

int newaddr(int a)
{
	int n;

	n = 0;
#ifdef SIMPLE
	for (int i = 0; i < 18; i++)
		if (a & (1 << i)) n |= (1 << (17 - i));
#else	
	/* glyph data: address [4:0] connects rom [13:17] */
	if (a & (1 <<  0)) n |= (1 << 17);
	if (a & (1 <<  1)) n |= (1 << 16);
	if (a & (1 <<  2)) n |= (1 << 15);
	if (a & (1 <<  3)) n |= (1 << 14);
	if (a & (1 <<  4)) n |= (1 << 13);

	/* glyph index: address [17:5] connects rom [12:0] */
	if (a & (1 <<  5)) n |= (1 <<  0);
	if (a & (1 <<  6)) n |= (1 <<  1);
	if (a & (1 <<  7)) n |= (1 <<  2);
	if (a & (1 <<  8)) n |= (1 <<  3);
	if (a & (1 <<  9)) n |= (1 <<  4);
	if (a & (1 << 10)) n |= (1 <<  5);
	if (a & (1 << 11)) n |= (1 <<  6);
	if (a & (1 << 12)) n |= (1 <<  7);
	if (a & (1 << 13)) n |= (1 <<  8);
	if (a & (1 << 14)) n |= (1 <<  9);
	if (a & (1 << 15)) n |= (1 << 10);
	if (a & (1 << 16)) n |= (1 << 11);
	if (a & (1 << 17)) n |= (1 << 12);
#endif
	return n;
}

int main(int argc, char *argv[])
{
	int i;
	FILE *fp;

	if ((fp = fopen(argv[1], "r")) == NULL) {
		printf("file open error\n");
		return 0;
	}

	fread(buf, sizeof(buf), 1, fp);

	for(i = 0; i < sizeof(buf); i++)
		putchar(buf[newaddr(i)]);

	return 0;
}