diff --git a/README b/README
index b673035..86e7ba0 100644
--- a/README
+++ b/README
@@ -60,10 +60,18 @@ cat /dev/pigerr &
 
 echo "help" >/dev/pigpio
 
-PYTHON INTERFACE
+PYTHON MODULE
+
+By default the Python pigpio module is installed to the
+default python location.  You can install it for additional
+Python versions by
+
+pythonx.y setup.py install
+
+where x.y is the Python version.
 
 If the pigpiod daemon is running you can test the Python
-interface by entering the following commands.
+module by entering the following commands.
 
 python
 
diff --git a/pigpio.c b/pigpio.c
index 5b721b8..82803f5 100644
--- a/pigpio.c
+++ b/pigpio.c
@@ -25,7 +25,7 @@ OTHER DEALINGS IN THE SOFTWARE.
 For more information, please refer to <http://unlicense.org/>
 */
 
-/* pigpio version 7 */
+/* pigpio version 8 */
 
 #include <stdio.h>
 #include <string.h>
@@ -3176,7 +3176,7 @@ static void initClock(int mainClock)
 
 /* ----------------------------------------------------------------------- */
 
-static void initDMAgo(uint32_t  * dmaAddr, uint32_t cbAddr)
+static void initDMAgo(volatile uint32_t  * dmaAddr, uint32_t cbAddr)
 {
    DBG(DBG_STARTUP, "");
 
diff --git a/pigpio.h b/pigpio.h
index ce7b8b2..8ab7c67 100644
--- a/pigpio.h
+++ b/pigpio.h
@@ -26,7 +26,7 @@ For more information, please refer to <http://unlicense.org/>
 */
 
 /*
-This version is for pigpio version 7
+This version is for pigpio version 8
 */
 
 #ifndef PIGPIO_H
@@ -49,6 +49,8 @@ This version is for pigpio version 7
 / 7) notifications when any of gpios 0-31 change state.                     /
 / 8) the construction of arbitrary waveforms to give precise timing of      /
 /    output gpio level changes.                                             /
+/ 9) rudimentary permission control through the socket and pipe interfaces  /
+/    so users can be prevented from "updating" inappropriate gpios.         /
 /                                                                           /
 / NOTE:                                                                     /
 /                                                                           /
@@ -82,7 +84,7 @@ This version is for pigpio version 7
 
 #include <stdint.h>
 
-#define PIGPIO_VERSION 7
+#define PIGPIO_VERSION 8
 
 /*-------------------------------------------------------------------------*/
 
@@ -179,6 +181,7 @@ gpioCfgDMAchannel          Configure the DMA channel (DEPRECATED).
 gpioCfgDMAchannels         Configure the DMA channels.
 gpioCfgPermissions         Configure the gpio access permissions.
 gpioCfgInterfaces          Configure user interfaces.
+gpioCfgInternals           Configure miscellaneous internals.
 gpioCfgSocketPort          Configure socket port.
 
 */
@@ -1641,8 +1644,14 @@ int gpioCfgPermissions(uint64_t updateMask);
 /* Configures pigpio to only allow updates (writes or mode changes) for the
    gpios specified by the mask.
 
-   The default setting is to allow updates to gpios 0-31, i.e. an update mask
-   of 0x00000000FFFFFFFF.
+   The default setting depends upon the board revision (Type 1 or Type 2).
+   The user gpios are added to the mask.  If the board revision is not
+   recognised then the mask is formed by or'ing the bits for the two
+   board revisions.
+
+   Unknown board: PI_DEFAULT_UPDATE_MASK_R0        0xFBE6CF9F
+   Type 1 board:  PI_DEFAULT_UPDATE_MASK_R1        0x03E6CF93
+   Type 2 board:  PI_DEFAULT_UPDATE_MASK_R2        0xFBC6CF9C
 */
 
 
diff --git a/setup.py b/setup.py
index ceff7d9..bc27f8c 100644
--- a/setup.py
+++ b/setup.py
@@ -4,9 +4,14 @@ from distutils.core import setup
 
 setup(name='pigpio',
       version='1.0',
-      description='Raspberry Pi gpio utility',
       author='joan',
       author_email='joan@abyz.me.uk',
+      maintainer='joan',
+      maintainer_email='joan@abyz.me.uk',
       url='http://abyz.co.uk/rpi/pigpio/python.html/',
+      description='Raspberry Pi gpio module',
+      long_description='Raspberry Pi Python module for access to the pigpio daemon',
+      download_url='http://abyz.co.uk/rpi/pigpio/pigpio.tar',
+      license='TBD',
       py_modules=['pigpio']
      )