diff --git a/src/mame/machine/awboard.c b/src/mame/machine/awboard.c
index 716a425c048..7624e12fd86 100644
--- a/src/mame/machine/awboard.c
+++ b/src/mame/machine/awboard.c
@@ -108,6 +108,7 @@ DEVICE_ADDRESS_MAP_START(submap, 16, aw_rom_board)
 	AM_RANGE(0x08, 0x09) AM_WRITE(mpr_first_file_index_w)
 	AM_RANGE(0x0a, 0x0b) AM_WRITE(mpr_file_offsetl_w)
 	AM_RANGE(0x0c, 0x0d) AM_WRITE(mpr_file_offseth_w)
+	AM_RANGE(0x40, 0x41) AM_READWRITE(adj_offset_r, adj_offset_w)
 ADDRESS_MAP_END
 
 aw_rom_board::aw_rom_board(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
@@ -238,6 +239,7 @@ void aw_rom_board::device_start()
 	save_item(NAME(mpr_file_offset));
 	save_item(NAME(dma_offset));
 	save_item(NAME(dma_limit));
+	save_item(NAME(adjust_off));
 }
 
 void aw_rom_board::device_reset()
@@ -247,11 +249,22 @@ void aw_rom_board::device_reset()
 	mpr_record_index = 0;
 	mpr_first_file_index = 0;
 	mpr_file_offset = 0;
+	adjust_off = 0;
 
 	dma_offset = 0;
 	dma_limit  = 0;
 }
 
+READ16_MEMBER(aw_rom_board::adj_offset_r)
+{
+	return adjust_off;
+}
+
+WRITE16_MEMBER(aw_rom_board::adj_offset_w)
+{
+	adjust_off = data;
+}
+
 WRITE16_MEMBER(aw_rom_board::epr_offsetl_w)
 {
 	epr_offset = (epr_offset & 0xffff0000) | data;
@@ -284,7 +297,8 @@ WRITE16_MEMBER(aw_rom_board::mpr_file_offsetl_w)
 
 WRITE16_MEMBER(aw_rom_board::mpr_file_offseth_w)
 {
-	mpr_file_offset = (mpr_file_offset & 0x0000ffff) | (data << 16);
+	mpr_file_offset = ((mpr_file_offset & 0x0000ffff) | ((data -(adjust_off*0x0100))<< 16));
+
 	recalc_dma_offset(MPR_FILE);
 }
 
diff --git a/src/mame/machine/awboard.h b/src/mame/machine/awboard.h
index 772f8b739ef..daf9b002c91 100644
--- a/src/mame/machine/awboard.h
+++ b/src/mame/machine/awboard.h
@@ -22,6 +22,8 @@ public:
 	DECLARE_WRITE16_MEMBER(mpr_first_file_index_w); // 5f7010
 	DECLARE_WRITE16_MEMBER(mpr_file_offsetl_w);     // 5f7014
 	DECLARE_WRITE16_MEMBER(mpr_file_offseth_w);     // 5f7018
+	DECLARE_READ16_MEMBER(adj_offset_r);			// 5f7080
+	DECLARE_WRITE16_MEMBER(adj_offset_w);			// 5f7080
 
 protected:
 	virtual void device_start();
@@ -37,7 +39,7 @@ private:
 	bool region_is_decrypted;
 
 	UINT32 epr_offset, mpr_file_offset;
-	UINT16 mpr_record_index, mpr_first_file_index;
+	UINT16 mpr_record_index, mpr_first_file_index, adjust_off;
 
 	UINT32 dma_offset, dma_limit;