[avrdude-dev] [bug #22535] eeprom writing problems with atmega128

[Joerg Wunsch]

Update of bug #22535 (project avrdude):

                  Status:                    None => Need Info              
             Assigned to:                    None => joerg_wunsch           

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Follow-up Comment #1:

Is this on a device where the EEPROM has been erased right
before trying to program it?

When programmin in page mode (which is what the -U option does
on some programmer types), EEPROM cells are handled like flash
ROM cells, i. e. they can only be programmed from bit `1' to
`0', and cell erase cycles is implied.  In contrast, terminal
mode uses one-byte-at-a-time EEPROM programming, which includes
an auto-erase cycle.

So this is essentially an AVR feature than, rather than a bug.

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