Force internal mapper state update on system state load

src/map/cnrom.c

@@ -110,6 +110,8 @@ int cnrom_state_read(nes_mapper* nes_map, const void* data) {
     memcpy(map->vram, ptr, sizeof(map->vram));
     ptr += sizeof(map->vram);
 
+    cnrom_set_bank(map, map->bank);
+
     return (ptr - data);
 }
 

src/map/mmc1.c

@@ -246,8 +246,14 @@ int mmc1_state_size(const nes_mapper* nes_map) {
 
 int mmc1_state_read(nes_mapper* nes_map, const void* data) {
     mmc1_mapper* map = (mmc1_mapper*)nes_map->data;
+
     int size = mmc1_state_size(nes_map);
     memcpy(&(map->reg_shift), data, size);
+
+    mmc1_update_prg(map);
+    mmc1_update_chr(map);
+    mmc1_update_vram(map);
+
     return size;
 }
 

src/map/mmc3.c

@@ -355,8 +355,18 @@ int mmc3_state_size(const nes_mapper* nes_map) {
 
 int mmc3_state_read(nes_mapper* nes_map, const void* data) {
     mmc3_mapper* map = (mmc3_mapper*)nes_map->data;
+
+    uint8_t old_bank_select = map->bank_select;
+
     int size = mmc3_state_size(nes_map);
     memcpy(map->r, data, size);
+
+    uint8_t new_bank_select = map->bank_select;
+    map->bank_select = old_bank_select;
+
+    mmc3_update_rom_mode(map, new_bank_select);
+    mmc3_update_vram(map);
+
     return size;
 }