Sorry, I've made a mistake in my 16F88 fuses used :=20 Here are the ones I 'try' to use without success:=20 __CONFIG( FOSC_INTOSCIO & DEBUG_ON & LVP_OFF & WDTE_OFF & PWRTE_OFF & BOREN_OFF & CP_OFF & MCLRE_ON );=20 I'm using MPLAB v8.9 and Hitech PRO v9.83=20 and I checked many times the fuse's names in the 16F88.h file=20 and they are correct.=20 So does anybody have a simple 16F88 project to show=20 that it can work in debug using 8mhz internal clock (freeing RA6, RA7 pins)= =20 ... Like a C listing with a PDF schematic file of what is connected to that PIC ?=20 Lots of people say it works but there are no practical setup=20 to try that these people did.=20 Please some workin examples..=20 Many thanks !=20 -- View this message in context: http://microcontrollers.2385.n7.nabble.com/PI= C16F88-debugging-using-internal-oscillator-issue-tp198964p198978.html Sent from the MicroControllers - PIC mailing list archive at Nabble.com. --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .