diff --git a/icom/Makefile.am b/icom/Makefile.am
index 5e4d3ad7e..0df3bad6e 100644
--- a/icom/Makefile.am
+++ b/icom/Makefile.am
@@ -1,9 +1,9 @@
 ICOMSRCLIST = ic706.c icr8500.c ic735.c ic775.c ic756.c icall.c \
               ic275.c ic475.c ic821h.c icr7000.c ic910.c ic970.c \
-			  ic718.c
+			  ic718.c os535.c
 
 lib_LTLIBRARIES = libhamlib-icom.la
-libhamlib_icom_la_SOURCES = $(ICOMSRCLIST) icom.c frame.c
+libhamlib_icom_la_SOURCES = $(ICOMSRCLIST) icom.c frame.c optoscan.c
 libhamlib_icom_la_LDFLAGS = -no-undefined -module -version-info 0:0:0
 libhamlib_icom_la_LIBADD = ../src/libhamlib.la
 
diff --git a/icom/icom.c b/icom/icom.c
index 07744f397..7451cf393 100644
--- a/icom/icom.c
+++ b/icom/icom.c
@@ -2,7 +2,7 @@
  *  Hamlib CI-V backend - main file
  *  Copyright (c) 2000-2002 by Stephane Fillod
  *
- *		$Id: icom.c,v 1.54 2002-03-05 23:31:31 fillods Exp $
+ *		$Id: icom.c,v 1.55 2002-03-06 21:10:56 fillods Exp $
  *
  *   This library is free software; you can redistribute it and/or modify
  *   it under the terms of the GNU Library General Public License as
@@ -255,6 +255,7 @@ static const struct icom_addr icom_addr_list[] = {
 		{ RIG_MODEL_ICR9000, 0x2a },
 		{ RIG_MODEL_MINISCOUT, 0x94 },
 		{ RIG_MODEL_IC718, 0x5e },
+		{ RIG_MODEL_OS535, 0x80 },
 		{ RIG_MODEL_NONE, 0 },
 };
 
@@ -2418,6 +2419,8 @@ int initrigs_icom(void *be_handle)
 
 		rig_register(&icall_caps);
 
+		rig_register(&os535_caps);
+
 		return RIG_OK;
 }
 
diff --git a/icom/icom.h b/icom/icom.h
index d9e3cdaea..21efe3b9c 100644
--- a/icom/icom.h
+++ b/icom/icom.h
@@ -1,8 +1,8 @@
 /*
  *  Hamlib CI-V backend - main header
- *  Copyright (c) 2000,2001,2002 by Stephane Fillod
+ *  Copyright (c) 2000-2002 by Stephane Fillod
  *
- *		$Id: icom.h,v 1.41 2002-03-05 23:31:31 fillods Exp $
+ *		$Id: icom.h,v 1.42 2002-03-06 21:10:56 fillods Exp $
  *
  *   This library is free software; you can redistribute it and/or modify
  *   it under the terms of the GNU Library General Public License as
@@ -108,6 +108,10 @@ int icom_set_powerstat(RIG *rig, powerstat_t status);
 int icom_get_powerstat(RIG *rig, powerstat_t *status);
 int icom_decode_event(RIG *rig);
 
+int optoscan_open(RIG *rig);
+int optoscan_close(RIG *rig);
+const char* optoscan_get_info(RIG *rig);
+
 extern const struct confparams icom_cfg_params[];
 
 extern const struct rig_caps ic706_caps;
@@ -127,6 +131,8 @@ extern const struct rig_caps icall_caps;
 extern const struct rig_caps ic275_caps;
 extern const struct rig_caps ic475_caps;
 
+extern const struct rig_caps os535_caps;
+
 extern BACKEND_EXPORT(rig_model_t) proberigs_icom(port_t *p);
 extern BACKEND_EXPORT(int) initrigs_icom(void *be_handle);