implement basic iNES and Mapper 0 ROM loading

It seems like the test ROM loads fine but the instructions are not,
but that's exactly what the test ROM is for I suppose.

1 files changed, 17 insertions, 0 deletions

diff --git a/rom.h b/rom.h
new file mode 100644
index 0000000..a52bda1
--- /dev/null
+++ b/rom.h
@@ -0,0 +1,17 @@
+enum screen_mirroring {
+	M_HORIZONTAL,
+	M_VERTICAL,
+	M_FOUR,
+};
+
+struct Rom {
+	char *prg_rom;
+	char *chr_rom;
+	size_t prg_rom_size;
+	size_t chr_rom_size;
+	uint8_t mapper;
+	enum screen_mirroring mirror;
+};
+
+void parse_rom(const uint8_t *data, size_t data_len, struct Rom *rom);
+void free_rom(struct Rom *rom);