add on_mmu_{rb,wb}(), add gpu_is_active(), fix DEC SP

1 files changed, 2 insertions, 0 deletions

diff --git a/gb.h b/gb.h
index ea092a2..15bd75e 100644
--- a/gb.h
+++ b/gb.h
@@ -40,6 +40,8 @@ typedef struct {
   void (*on_gpu_step)(const gb_t *);
   void (*on_gpu_set_mode)(const gb_t *, const uint8_t);
   void (*on_rst)(const gb_t *, const uint16_t);
+  void (*on_mmu_rb)(const gb_t *, const uint16_t, const uint8_t);
+  void (*on_mmu_wb)(const gb_t *, const uint16_t, const uint8_t);
   void *cb_data;
 } gb_config_t;