Post by thread:18F452 register organization

Can anyone point me to a tutorial, or howto, on the register organization of the 18F452 chip?? I have looked at the data sheet, and it is not that clear (although once I know the architecture I feel sure the documentation will be crystal clear, as always happens :-) For those of you who might reply with RTFM or generic equivalent thereof, I will be glad to if you can point me to where the FM might be. I figured the data sheet would be it.... Thanks, John -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics

I'm no expert but as I see it..... There are 15 GPR ram banks The SF Regs are at the top of bank 15 address F60h to FFFh GP ram from 0 to 5Fh is classed as Access ram and requires no bank switching to access it. Just ref the location and you have it. The same is true of the SFR's no bank switching needed. There is also some free GP ram at F00h up to the SFR's at F5Fh this I think is Access ram. Other than that it is just paging as before except you can just use MOVLB ? the ? being the bank required. I say all is the same there is one extra thing. MOVFF requires no bank switching. Since the 12-bit addresses are embedded into the instruction word. Hope that helps Tim {Original Message removed}

RTFM page 45, Table 4-1 "Special Function Register Map". {Quote hidden}> -----Original Message----- > From: pic microcontroller discussion list > [spam_OUTPICLISTTakeThisOuTMITVMA.MIT.EDU]On Behalf Of John Nall > Sent: Wednesday, February 12, 2003 5:18 PM > To: .....PICLISTKILLspam@spam@MITVMA.MIT.EDU > Subject: 18F452 register organization > > > Can anyone point me to a tutorial, or howto, on the register > organization of > the 18F452 chip?? I have looked at the data sheet, and it is not that > clear (although once I know the architecture I feel sure the documentation > will be crystal clear, as always happens :-) > > For those of you who might reply with RTFM or generic equivalent > thereof, I > will be glad to if you can point me to where the FM might be. I > figured the > data sheet would be it.... > > Thanks, > John > > -- > http://www.piclist.com hint: The list server can filter out subtopics > (like ads or off topics) for you. See http://www.piclist.com/#topics > > > -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics

> >RTFM page 45, Table 4-1 "Special Function Register Map". Oh. OK. :-~ (that is the symbol for an embarrassed grin). John -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.