Hi,

Using a PIC18F4550.

I am writing a modbus slave in C18, all is going well with the osc set 
to 24Mhz (using PLL div by 4).
I am now running out of time to do all the tasks before servicing the 
serial so I would like to increase the cpu freq to 48Mhz (by changing 
the div to 2), when I do this the ICD2 looses connection. If I change to 
div by 3 it will work some of the time but is not reliable.

Does the ICD2 have any clock limitations? I have looked through the spec 
and don't see anything. Is it very fussy about cable lengths etc?
The PIC18F4550 should be good to 48Mhz.

thanks

Lee McLaren
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