Full savestating to memory

include/ram.h

@@ -2,6 +2,18 @@
 
 #include <common.h>
 
+typedef struct {
+    u8 wram[0x2000];
+    u8 hram[0x80];
+} ram_context;
+
+typedef struct {
+    ram_context ctx; 
+} ram_state;
+
+void ram_save_state(ram_state*);
+void ram_load_state(const ram_state*);
+
 u8 wram_read(u16 address);
 void wram_write(u16 address, u8 value);