The presence of rtos library, and line 294 in RF12B.cpp causes a crash when ISR occurs on falling edge on pin 9.

Dependencies:   mbed

Revision:
0:b4c2aa657754
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Sun Mar 25 20:14:41 2012 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/737756e0b479