1 files changed, 18 insertions, 0 deletions
diff --git a/mapper.h b/mapper.h
index f38b000..46db0a4 100644
--- a/mapper.h
+++ b/mapper.h
@@ -1,2 +1,20 @@
 
 #include "mapper_066.h"
+
+
+
+struct mapper {
+	void (*init)(struct nes_state *state);
+	uint8_t (*prg_read)(struct nes_state *state, uint32_t addr);
+	void (*prg_write)(struct nes_state *state, uint32_t addr, uint8_t value);
+	uint8_t (*chr_read)(struct nes_state *state, uint32_t addr);
+	void (*chr_write)(struct nes_state *state, uint32_t addr, uint8_t value);
+	uint8_t (*ciram_read)(struct nes_state *state, uint32_t addr);
+	void (*ciram_write)(struct nes_state *state, uint32_t addr, uint8_t value);
+	void (*tick)(struct nes_state *state);
+};
+
+union mapper_data {
+	struct mapper_066 m066;
+};
+