On Fri, 11 Mar 2011 00:11 +0530, "Manu Abraham" wrote: > Hi, >=20 > With an 18F4550, is it necessary to pullup /MCLR with the 10k resistor > when using ICD2 in debug mode ? Hi Manu, I don't know if there is an official published schematic for the ICD2, but the schematics I have seen for it do not float /MCLR under any conditions. So I would say in that case you are OK not having a pullup on your target. Friendly regards, Bob --=20 http://www.fastmail.fm - The way an email service should be --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .