I too have been having problems programming 10F22X chips with the ICD2
with a target power supply.

I think that I might have found the problem.

MCLR is set to external. 

I believe that the programming spec for the 10F22X has some information.
Reference Microchip document DS41266B page 3 figure 3-2.

Note that the figure reverences program/verify mode EXIT.  Not the "typical"
high voltage/low voltage programming figure as in a lot of other specs.

This is NEW and DIFFERENT from the other pics.  Usually there is NO EXIT
condition requirements for the relationship between Vdd and VPP.

I found this information late yesterday afternoon.

Since I am using target supply (mine is at 5V), there is no way for the ICD2
to turn off the Vdd prior to Vpp.

I think that we are out of luck.

Hope this helps.

  Cheers,

   Rich S.


>From: Mike Hord <mike.hord <at> gmail.com>
>Subject: [PIC] ICD2 + 10F PICs
>Newsgroups: gmane.comp.hardware.microcontrollers.pic
>Date: 2006-12-06 15:58:54 GMT (2 days, 2 hours and 36 minutes ago)
>
>A search of the archive and datasheets was not helpful.
>
>Is there a non-obvious trap when using the ICD2 to
>program (not debug) a 10F PIC?  My circuit is VERY
>simple- two AA batteries feeding the circuit (no
>regulation), a NO switch from one pin to Vss, and
>an LED on the one pin which is not involved in ICSP.
>
>Did I neglect something here?  The chip seems to
>program once, then not again.  I can't get it to erase
>or blank check, even.
>
>Mike H.
>-- 
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