Post by thread:[EE] Problem With ICD2: Strange Effects

I'm trying to debug a complex PCB based on LF88 running at 3.5V. For the last 6 weeks, bringing up the earlier code, no problems were discovered at all. A 3 week lull ensued, caused by external issues. Now that they are resolved, I have returned to it, only to discover than the ICD2 is acting very strangely. 1. The ICD2 seems to work perfectly- no errors are posted to MPLAB7.0 at all. 2. The LF88 acts like it is operating correctly. The PA and PB registers act in MPLAB as if they are working correctly (MPLAB shows them correctly changing state). But get this: the actual LF88 itself has no pin state changes at all!!! With a scope attached, not an edge transition occurs! 3. I have checked for ICD2 debug PGM area overruns, for protected register overwrites, everything I can think of. I have one more ICD2 I can switch to, but it is RS232 only. Before I rip up the station, does anybody have any ideas? -- I am running MCs ICD2, short (6") cable, external GND, on a 1200Mhz 256Mb Win2K system. --Bob -- Note: To protect our network, attachments must be sent to spam_OUTattachTakeThisOuTengineer.cotse.net . 1-866-263-5745 USA/Canada http://beam.to/azengineer

Is brownout detect off? ================================= DXTron Technology Inc Atlanta, Ga PCB Assembly TH and SMT PCB Design PIC Chip Programming Systems Design and Programming ================================= .....redrock8KILLspam@spam@dxtron.com http://www.dxtron.com ================================= {Original Message removed}

Yes, brownout detect is off. But good idea, tho. --Bob redtock8@dxtron wrote: {Quote hidden}> Is brownout detect off? > ================================= > DXTron Technology Inc > Atlanta, Ga > PCB Assembly > TH and SMT > PCB Design > PIC Chip Programming > Systems Design and Programming > ================================= > redrock8KILLspamdxtron.com > http://www.dxtron.com > ================================= > {Original Message removed}