Has anyone used a dragonball for palm alike development? I just received some literature from big M. Wonder where is a good start from a picer's point. Yansong ----- Original Message ----- From: Dwayne Reid To: Sent: Monday, January 15, 2001 4:10 PM Subject: Re: [PIC]: grounding unused inputs > At 03:55 PM 1/15/01 -0500, David VanHorn wrote: > > >Interesting. > >I see what you mean here. > >On the AVR or Z8, this isn't a problem because the tris-equivalent > >registers can't be modified by inputs like this. > > Hi there, Dave. > > Something you wrote puzzles me - maybe there is yet another PIC wrinkle > that I am not aware of. Is there any condition where the TRIS register can > be changed by something happening on the port pins? If so, this is a new > problem to me! > > The only port related problem I can think of right now is the > read-modify-write issue - its not a problem since I am aware of it. But I > am not aware of a TRIS register susceptibility. Is there a problem > there? What causes it and what does it do? > > I always check or refresh TRIS and other important registers simply because > I can't predict what a nasty ESD or EMI event might do to me - all I can do > is deal with the problem if it happens. But it sure doesn't happen during > normal operation. > > dwayne > > > > > Dwayne Reid > Trinity Electronics Systems Ltd Edmonton, AB, CANADA > (780) 489-3199 voice (780) 487-6397 fax > > Celebrating 17 years of Engineering Innovation (1984 - 2001) > > * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * > Do NOT send unsolicited commercial email to this email address. > This message neither grants consent to receive unsolicited > commercial email nor is intended to solicit commercial email. > > -- > http://www.piclist.com#nomail Going offline? Don't AutoReply us! > email listserv@mitvma.mit.edu with SET PICList DIGEST in the body > > > -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu