[Uisp-dev] Using uisp with ATmega128 bootloader code

[Harald Kipp]

Hi list,

Some time ago I wrote an Open Source Ethernet
bootloader for the ATmega128 and everything
worked fine using AvrStudio and ATJTAGICE.

Recently I received several requests from
users, that the code doesn't work on their
target and found out, that uisp fails to
write the bootloader code to the correct
flash address.

The (Intel) hex code starts with
:020000021000EC
:10E00000C0E0D1E1DEBFCDBF87E089B988E18AB940
...

Reading it back from a device programmed
with AvrStudio results in the following
(Mot) hex file

S0080000666C617368E9
S21401E000CFEFD0E1DEBFCDBF1124F894A0E0B1E0A0
...

However, when the device was programmed with
uisp, the hex file read back shows

S0080000666C617368E9
S113E000C0E0D1E1DEBFCDBF87E089B988E18AB93C
...

Of course, this device doesn't run.

Any ideas, what I should try next? Thanks
for your help in advance.

Harald Kipp