Mircea Vasiliu
14-01-2002, 11:01 AM
Hi!
I've read a posting that the checksums are calculated only using every 32 and 33 bytes. However I used NFree and modified different bytes at different locations and the checksum was always modified.
When I modified a byte +1 and another one -1 the checksum stayed the same (so it looks like an addition checksum).
Question 1: why this difference?
Question 2: if the checksum stays the same as viewed with NFree for a modified MCU or PPM will the FAID still need calculation after flashing?
I've read a posting that the checksums are calculated only using every 32 and 33 bytes. However I used NFree and modified different bytes at different locations and the checksum was always modified.
When I modified a byte +1 and another one -1 the checksum stayed the same (so it looks like an addition checksum).
Question 1: why this difference?
Question 2: if the checksum stays the same as viewed with NFree for a modified MCU or PPM will the FAID still need calculation after flashing?