1 files changed, 37 insertions, 0 deletions
diff --git a/nuttx/ReleaseNotes b/nuttx/ReleaseNotes
index 8f236c06c..3a572ad46 100644
--- a/nuttx/ReleaseNotes
+++ b/nuttx/ReleaseNotes
@@ -1330,3 +1330,40 @@ of issues:
     multicast groups.  Outbound traffic to enter and leave multicast groups
     has been verified, but full verification will require a switch capable of
     multicast.  Issues associated with the receipt of multicast packets are likely.
+
+nuttx-5.9
+^^^^^^^^^
+
+This is the 56th release of NuttX.  This release is difficult to categorize;
+NuttX-5.9 was really released because there were too many changes accumulating
+in CVS -- a few important, some unfinished implementations, and a couple of
+important bugfixes.
+
+  * By far biggest change in this release is the complete implementation
+    of on-demand paging support.  This feature will allow you to execute large
+    programs on a mass storage device (such as SPI FLASH) in a small RAM.
+    All of the core on-demand paging logic was completed (see
+    http://www.nuttx.org/NuttXDemandPaging.html) and support was implemented
+    for the ARM-9 family.  A test configuration is in place for the NXP
+    LPC3131.  It has been verified that this new logic does not interfere
+    with normal fixed-page ARM9 operation, but otherwise this new on-demand
+    paging feature is untested.
+  * Add support for the CodeSourcery toolchain to the Olimex-lpc2378 port
+    and for the Neuros OSD port.
+  * The Neuros OSD port has been updated to work with the production v1.0
+    OSD (previously it only worked with the development board).
+  * And some miscellaneous feature enhancements as detailed in the ChangeLog.
+
+This includes several important bugfixes:
+
+  * NXP LPC17xx - Fixed a critical bug in the GPIO configuratino logic:
+    When attempting to set no pull-up or pull-down (floating), it would,
+    instead, select pull-down.
+  * TI/Luminary LM3Sxxxx - Fixed (1) a logic error in an address table
+    lookup, (2) GPIO port encoding the limited support to only 8 GPIO
+    ports.
+  * Corrected the lease time in the DHCPC implementation:  It was not in
+    host byte order.
+  * And several other less important bugs as documented in the ChangeLog:
+    Warnings, cornercase compilation problems, etc.
+