diff --git a/core/cart_hw/sms_cart.c b/core/cart_hw/sms_cart.c
index 5cf7e11..a4f7a8c 100644
--- a/core/cart_hw/sms_cart.c
+++ b/core/cart_hw/sms_cart.c
@@ -777,11 +777,45 @@ int sms_cart_context_load(uint8 *state)
   {
     /* load Boot ROM mapper settings */
     load_param(bios_rom.fcr, 4);
+
+    /* set default cartridge ROM paging */
+    switch (cart_rom.mapper)
+    {
+      case MAPPER_SEGA:
+      case MAPPER_SEGA_X:
+        cart_rom.fcr[0] = 0;
+        cart_rom.fcr[1] = 0;
+        cart_rom.fcr[2] = 1;
+        cart_rom.fcr[3] = 2;
+        break;
+
+      case MAPPER_KOREA_8K:
+      case MAPPER_MSX:
+      case MAPPER_MSX_NEMESIS:
+        cart_rom.fcr[0] = 0;
+        cart_rom.fcr[1] = 0;
+        cart_rom.fcr[2] = 0;
+        cart_rom.fcr[3] = 0;
+        break;
+
+      default:
+        cart_rom.fcr[0] = 0;
+        cart_rom.fcr[1] = 0;
+        cart_rom.fcr[2] = 1;
+        cart_rom.fcr[3] = 0;
+        break;
+    }
   }
   else
   {
     /* load cartridge mapper settings */
     load_param(cart_rom.fcr, 4);
+
+    /* set default BIOS ROM paging (SEGA mapper by default) */
+    bios_rom.fcr[0] = 0;
+    bios_rom.fcr[1] = 0;
+    bios_rom.fcr[2] = 1;
+    bios_rom.fcr[3] = 2;
   }
 
   /* support for SG-1000 games with extra RAM */