"oppie" wrote in message
...
aifk the type of clock is spec'ed in the 'configuration bits' section of
MPLAB. There is a default clock that is initially used and this depends on
the target device (also specified in MPLAB). Past that, the download is
synchronous so the clock is not initially important just as long as there
is one.

Perhaps a better way of phrasing my question - is the PGC clock supplied by
the ICSP interface sufficient on its own during programming, or does an
external clock have to be provided in the absence of an internal clock
generator?