-functionality described in the standard is implemented and tested.
-The MAC itself is platform-independent, but it requires (1) a suitable radio
-driver, (2) Alarms/Timers with symbol precision and (3) some "platform glue"
-code (defining guard times, etc.). Currently the only supported platform is
-TelosB (but without additional hardware support on TelosB the timing in
-beacon-enabled mode is not standard compliant).
+functionality described in the standard is implemented and tested. The MAC
+itself is platform-independent, but it requires (1) a suitable radio driver,
+(2) Alarms/Timers with symbol precision and (3) some "platform glue" code
+(defining guard times, etc.). Currently the only supported platforms are TelosB
+and micaZ (note: because they do not have a clock that satisfies the
+precision/accuracy requirements of the IEEE 802.15.4 standard -- 62.500 Hz,
++-40 ppm in the 2.4 GHz band -- the timing in beacon-enabled mode is not
+standard compliant).