diff --git a/bochs/doc/docbook/user/user.dbk b/bochs/doc/docbook/user/user.dbk
index 22a6f3cfa..b536bd0d5 100644
--- a/bochs/doc/docbook/user/user.dbk
+++ b/bochs/doc/docbook/user/user.dbk
@@ -1,7 +1,7 @@
 <!--
 ================================================================
 doc/docbook/user/user.dbk
-$Id: user.dbk,v 1.141 2004-01-17 20:50:45 danielg4 Exp $
+$Id: user.dbk,v 1.142 2004-01-24 18:03:00 danielg4 Exp $
 
 This is the top level file for the Bochs Users Manual.
 ================================================================
@@ -3587,6 +3587,31 @@ Enables limited i440fx PCI chipset support.
 </para>
 </section>
 
+<section><title>pcidev</title>
+<para>
+Examples:
+<screen>
+  pcidev: vendor=0xbabe, device=0x2bad
+</screen>
+Enables the mapping of a host PCI hardware device within the virtual PCI
+subsystem of the Bochs x86 emulator. The arguments
+<varname>vendor</varname> and <varname>device</varname>
+should contain the PCI vendor ID respectively the PCI
+device ID of the host PCI device you want to map within Bochs.
+</para>
+<note>
+<para>
+The PCI device mapping is still in a very early stage of development and thus it is very experimental.
+This feature requires Linux as a host operating system.
+</para>
+</note>
+<para>
+Besides the <varname>pcidev</varname> config line you will need to load
+a pcidev kernel module within your Linux host OS. This kernel module is
+located in the <constant>bochs/host/linux/pcidev/</constant> directory.
+</para>
+</section>
+
 <section><title>usb1</title>
 <para>
 Examples:
@@ -9530,7 +9555,7 @@ linux-$ ./bximage
 ========================================================================
                                 bximage
                   Disk Image Creation Tool for Bochs
-        $Id: user.dbk,v 1.141 2004-01-17 20:50:45 danielg4 Exp $
+        $Id: user.dbk,v 1.142 2004-01-24 18:03:00 danielg4 Exp $
 ========================================================================
 
 Do you want to create a floppy disk image or a hard disk image?
diff --git a/bochs/plugin.h b/bochs/plugin.h
index 65d642a6f..20ab25e69 100644
--- a/bochs/plugin.h
+++ b/bochs/plugin.h
@@ -1,5 +1,5 @@
 /////////////////////////////////////////////////////////////////////////
-// $Id: plugin.h,v 1.22 2004-01-15 02:08:34 danielg4 Exp $
+// $Id: plugin.h,v 1.23 2004-01-24 18:04:18 danielg4 Exp $
 /////////////////////////////////////////////////////////////////////////
 //
 // This file provides macros and types needed for plugins.  It is based on
@@ -75,6 +75,12 @@ extern "C" {
 #define PLUG_load_plugin(name,type) {lib##name##_LTX_plugin_init(NULL,type,0,NULL);}
 #define DEV_register_ioread_handler(b,c,d,e,f) bx_devices.register_io_read_handler(b,c,d,e,f)
 #define DEV_register_iowrite_handler(b,c,d,e,f) bx_devices.register_io_write_handler(b,c,d,e,f)
+#define DEV_unregister_ioread_handler(b,c,d,e)  bx_devices.unregister_io_read_handler(b,c,d,e)
+#define DEV_unregister_iowrite_handler(b,c,d,e) bx_devices.unregister_io_write_handler(b,c,d,e)
+#define DEV_register_ioread_handler_range(b,c,d,e,f,g)  bx_devices.register_io_read_handler_range(b,c,d,e,f,g)
+#define DEV_register_iowrite_handler_range(b,c,d,e,f,g) bx_devices.register_io_write_handler_range(b,c,d,e,f,g)
+#define DEV_unregister_ioread_handler_range(b,c,d,e,f)  bx_devices.unregister_io_read_handler_range(b,c,d,e,f)
+#define DEV_unregister_iowrite_handler_range(b,c,d,e,f) bx_devices.unregister_io_write_handler_range(b,c,d,e,f)
 #define DEV_register_default_ioread_handler(b,c,d,e) bx_devices.register_default_io_read_handler(b,c,d,e)
 #define DEV_register_default_iowrite_handler(b,c,d,e) bx_devices.register_default_io_write_handler(b,c,d,e)
 #define DEV_register_irq(b,c) bx_devices.register_irq(b,c)