diff --git a/desmume/src/wifi.h b/desmume/src/wifi.h
new file mode 100644
index 000000000..8934a2101
--- /dev/null
+++ b/desmume/src/wifi.h
@@ -0,0 +1,92 @@
+/*  
+    Copyright (C) 2007 Tim Seidel
+
+    This file is part of DeSmuME
+
+    DeSmuME is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    DeSmuME is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with DeSmuME; if not, write to the Free Software
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+#ifndef WIFI_H
+#define WIFI_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Referenced as RF_ in dswifi: rffilter_t */
+/* based on the documentation for the RF2958 chip of RF Micro Devices */
+/* using the register names as in docs */
+/* even tho every register only has 18 bits we are using u32 */
+typedef struct rffilter_t
+{
+	union
+	{
+		struct
+		{
+/* 0*/		unsigned IF_VGA_REG_EN:1;
+/* 1*/		unsigned IF_VCO_REG_EN:1;
+/* 2*/		unsigned RF_VCO_REG_EN:1;
+/* 3*/		unsigned HYBERNATE:1;
+/* 4*/      unsigned :10;
+/*14*/      unsigned REF_SEL:2;
+/*16*/      unsigned :2 ;
+		} bits ;
+		u32 val ;
+	} CFG1 ;
+	union
+	{
+		struct
+		{
+/* 0*/		unsigned DAC:4;
+/* 4*/		unsigned :5;
+/* 9*/      unsigned P1:1;
+/*10*/		unsigned LD_EN1:1;
+/*11*/      unsigned AUTOCAL_EN1:1;
+/*12*/      unsigned PDP1:1;
+/*13*/      unsigned CPL1:1;
+/*14*/      unsigned LPF1:1;
+/*15*/      unsigned VTC_EN1:1;
+/*16*/      unsigned KV_EN1:1;
+/*17*/      unsigned PLL_EN1:1;
+		} bits ;
+		u32 val ;
+	} IFPLL1
+	union
+	{
+		struct
+		{
+/* 0*/		unsigned IF_N:16;
+/*16*/      unsigned :2;
+		} bits ;
+		u32 val ;
+	} IFPLL2
+	union
+	{
+		struct
+		{
+/* 0*/      unsigned KV_DEF:4;
+/* 4*/      unsigned CT_DEF:4;
+/* 8*/      unsigned DN1:8;
+/*16*/      unsigned :2;
+		} bits ;
+		u32 val ;
+	} IFPLL3
+} rffilter_t ;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif