diff -ur hal/arm/lpc2xxx/var/current/ChangeLog hal/arm/lpc2xxx/var/current/ChangeLog.new
--- hal/arm/lpc2xxx/var/current/ChangeLog
+++ hal/arm/lpc2xxx/var/current/ChangeLog.new
@@ -1,3 +1,12 @@
+2006-02-03  Sergei Gavrikov <sg@sgs.gomel.by>
+
+	* cdl/hal_arm_lpc2xxx.cdl: Added CYGNUM_HAL_ARM_VECTOR_0x14. That
+	gives us a chance to correct a LPC2XXX program signature (ARM
+	unused vector at 0x14).  The program signature is the two's
+	compliment of the checksum of the ARM7 vector table. Note:
+	you can quite overwrite that CDL value in your plf. startup
+	code (hal_platform_setup.h).
+
 2006-05-08  Andy Jackson <andy@grapevinetech.co.uk>
  
 	* src/lpc2xxx_misc.c: Fixed issue with VPBDIV initialisation on
diff -ur hal/arm/lpc2xxx/var/current/cdl/hal_arm_lpc2xxx.cdl hal/arm/lpc2xxx/var/current/cdl/hal_arm_lpc2xxx.cdl.new
--- hal/arm/lpc2xxx/var/current/cdl/hal_arm_lpc2xxx.cdl
+++ hal/arm/lpc2xxx/var/current/cdl/hal_arm_lpc2xxx.cdl.new
@@ -112,6 +112,24 @@
         }
     }
 
+    # Important! Be very careful changing this value. That will always
+    # enter the LPC2XXX bootloader after reset and consequently will
+    # never run your code. You must know what you are doing. Look at
+    # arch. vectors.S for details.
+    cdl_option CYGNUM_HAL_ARM_VECTOR_0x14 {
+        display       "ARM vector at 0x14"
+        flavor        data
+        default_value 0xB4405F62
+        legal_values  0 to 0xFFFFFFFF
+        description "
+           In order to detect if a valid program is present, every
+           user program must have a program signature. This signature
+           is a word-wide number that is stored in the unused
+           location in the ARM7 vector table at 0x00000014. The
+           program signature is the two's compliment of the checksum
+           of the ARM vector table."
+    }
+
     cdl_option CYGNUM_HAL_ARM_LPC2XXX_VPBDIV {
         display       "VPB clock divisor"
         flavor        data