path: root/src/pat.c

/*
	Copyright 2022-2023 Gabriel Jensen.

	This file is part of agbsum.
	agbsum is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
	agbsum is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details.
	You should have received a copy of the GNU Affero General Public License along with agbsum. If not, see <https://www.gnu.org/licenses/>.
*/

#include <agbsum.h>

#include <stdio.h>

void agb_pat (FILE * const restrict rom, unsigned char chksum)
{
	fseek (rom,(long)(agb_romsrt+agb_chksumoff), SEEK_SET);

	if (fwrite (&chksum,0x1u,0x1u, rom) != 0x1u) {
		fputs ("Unable to patch ROM\n", stderr);
		agb_exi (agb_cnd_err, rom);
	}
}