EEPROM default values?

1

Hi all

What is the default state of EEPROM registers if they have never been written to?
I was assuming it was FFFF.
If I look at the eeprom.bin (in hex view), all the registers are indeed FFFF.

However, if I close the Editor down, delete the eeprom.bin file and relaunch the Editor (where it recreates a fresh eeprom.bin file), all the EEPROM registers are now 0000.

???

2

FFFF is the same as 0000 just in hex

3

What?
A set bit is not the same as a cleared bit.

4

FFFF is either 65535 when seen as unsigned or -1 as signed, but never 0000.