Absolutely mind boggling.  I have a chunk of code causing some kind of
software reset.  The WDT is disabled, in fact, all interrupts are disabled
in this program in it's entirety.  The kicker is, this code is NOT being
executed when the reset occurs, it is tied to one button, the other button I
push works fine but randomly causes a reset...  when I comment out the code,
it works fine (of course it doesn't do what I need though.)

Here's the snippet...  It's an EEPROM data write.

  ; ** EEPROM DATA STORAGE
  BANK0
  movf DEVSTATUS,w                              ; load data
  bcf PIR2,EEIF                                 ; clear complete flag just in case
  BANK2                                         ; go to bank2
  movwf EEDATA                                  ; set DATA
  movlw 0                                               ; load address
  movwf EEADR                                   ; set ADDRESS
  BANK3                                         ; go to bank3
  bcf EECON1,EEPGD                              ; DATA memory
  bsf EECON1,WREN                                       ; enable writes
;  movlw 0x55                                   ; * required
;  movwf EECON2                                 ; * eeprom
;  movlw 0xAA                                   ; * writing
;  movwf EECON2                                 ; * crap
  bsf EECON1,WR                                 ; initiate write
;  bcf EECON1,WREN                              ; disable writes
  BANK0
;  btfss PIR2,EEIF                              ; wait til the
;    goto $-1                                   ; writing is complete
  bcf PIR2,EEIF                                 ; clear complete flag
  return

if I uncomment any of those lines in ANY combination, I get a reset after a
few presses on my button, which DOES NOT execute this code :( :( :(   It's
almost as thought just having this code in makes it act erratic.  This is
reproducable on 2 different chips, I'm out of ideas and frustrated...

nick@veys.com | www.veys.com/nick

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