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> Van: AndrŽ  Malafaya Baptista               <ABaptista@SE.EFACEC.PT>
> Aan: PICLIST@MITVMA.MIT.EDU
> Onderwerp: Program Memory
> Datum: dinsdag 3 november 1998 16:38
> 
> On the 16C84 programming specification, it is said that locations in
range
> 0000-1FFF will access program memory, 2000-200F will access configuration
> memory and 2010-3FFF will access "user memory". What is understood by
"user
> memory"? Is it normal program memory, ie. 3000 is equivalent to 1000? Or
is
> it RAM memory (SFRs)?
> 
> TIA,
> AndrŽ Malafaya Baptista

0000-1FFF -> User memory. Ony 0000 thru 03FF used : 1K code space
2000-200F -> Configuration memory. Can _not_ be accessed while running. 
Only adres 2007 is important : contains the Configuration word.  2000-2003
are ID locations (7 bit wide) : Could be used as a Manufacturing-code or
Creation-date storage.
2100-213F -> EEProm memory. Accessible by special file-registers/routines
while running.

Data at adresses 2000-203F, 2140-and-up (excluding EEProm) can only be
accessed during Programming.

All other "memory" is Write-only :-)

Greetz,
  Rudy Wieser