diff --git a/core/vip.c b/core/vip.c
index 74b9bb2..cabbd4e 100644
--- a/core/vip.c
+++ b/core/vip.c
@@ -234,7 +234,7 @@ static void vipWriteCell(VB *sim, uint32_t offset, int type, int32_t value) {
         case VB_S8:
         case VB_U8:
             value = offset & 1 ?
-                value << 8 |           sim->vip.ram[0x20000 | offset] :
+                value << 8 |           sim->vip.ram[0x20001 ^ offset] :
                 value      | (int32_t) sim->vip.ram[0x20001 | offset] << 8
             ;
             break;
@@ -284,7 +284,7 @@ static void vipWriteObject(VB *sim, uint32_t offset, int type, int32_t value) {
         case VB_S8:
         case VB_U8:
             value = offset & 1 ?
-                value << 8 |           sim->vip.ram[0x3E000 | offset] :
+                value << 8 |           sim->vip.ram[0x3E001 ^ offset] :
                 value      | (int32_t) sim->vip.ram[0x3E001 | offset] << 8
             ;
             break;
@@ -326,7 +326,7 @@ static void vipWriteWorld(VB *sim, uint32_t offset, int type, int32_t value) {
         case VB_S8:
         case VB_U8:
             value = offset & 1 ?
-                value << 8 |           sim->vip.ram[0x3D800 | offset] :
+                value << 8 |           sim->vip.ram[0x3D801 ^ offset] :
                 value      | (int32_t) sim->vip.ram[0x3D801 | offset] << 8
             ;
             break;