> To read from my EEPROM inside the 'F628 I put the desired EE address in w
> and call 'ReadEE' (see code snippet).
>
> I'll confirm the value in address 0x00 of the EE space equal to 0xAA, and
> address 0x01 equal to 0x55 by looking at the EEPROM memory window.  If I
run
> at 4Mhz and read the two addresses one after the other, 'ReadEE' sends
back
> 0xAA each time.

How do you know this if you're not stepping?  Betcha there is an assumption
in there somewhere you're not thinking about right now.

> If I step through the program using the ICE2000, I'll get
> the correct values: 0xAA, and 0x55.  What gives?
>
> ReadEE
>         BANK1
>                 movwf   EEADR                   ;Address to read
>                 bsf     EECON1,RD               ;EE Read
>                 movf    EEDATA,w                ;w = EEDATA
>         BANK0
>                 return

I don't believe it.  The EEPROM read looks fine to me, and I don't believe
it is acting differently at high and low speed.  You'll find this a lot
quicker by assuming the PIC is working correctly and something is wrong with
your code.  Have you tried this on the real chip or just the emulator?


********************************************************************
Olin Lathrop, embedded systems consultant in Littleton Massachusetts
(978) 742-9014, olin@embedinc.com, http://www.embedinc.com

--
http://www.piclist.com hint: To leave the PICList
mailto:piclist-unsubscribe-request@mitvma.mit.edu