--- a/CHANGES	Wed Dec 26 07:04:32 2018 +0000
+++ b/CHANGES	Wed Dec 26 07:22:44 2018 +0000
@@ -3,6 +3,13 @@
 * New developer utility fc-rftab2c can convert per-band RF parameter tables
   into C code snippets for inclusion into FreeCalypso firmware sources.
 
+* There have been many different versions of the Calypso silicon made over the
+  years, including hardware differences, at least 3 ARM boot ROM versions and
+  at least 3 DSP ROM versions.  New target utility calversion (to be run via
+  fc-iram) helps identify unknown Calypso chip versions: it reports the ARM
+  boot ROM version, the DSP ROM version and the values read from the few
+  documented ID registers.
+
 Changes from fc-host-tools-r9 to fc-host-tools-r9a:
 
 * fc-loadtool can now correctly program the flash on Mot C155/156 phones: