All,

I am designing a small board with a 12F and need to use the=20
ICSP_CLK/ICSP_DAT and MCLR as inputs.  Apparently there is a Microchip=20
appnote about this, but I have been through the website and cannot seem=20
to find it.

Using the right config bits is assumed (i.e. so it does not need MCLR to=20
run).

The input is a rotary switch with the common to GND.  I plan on using=20
the PIC internal weak pullups (the proposed circuit is at=20
http://edeca.net/temp/electronics/PCB0016.pdf).

Using these pins for the switch selector means I can upload a modified=20
firmware that doesn't read the switch to do ICD.

Obviously I'll have to set the switch to 0 to disconnect it from GND=20
before programming, but are there any other problems with this as an idea?

David
--=20
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