Strange, it works for me :S
When i read the chip, i will get 00000 not FFFFF, there is possibility that programmer or program converts the bits? sounds wierd, are you sure about this? And after writing program and reading I will get hex like this:
:1000000000000000FF3FFF3FFF3F8F3FFF3FFF3FEC
:10001000280EF23F060883169F00831206089F00F1
:100020000608840087018801890106088600060801
:1000300085000608650006088316870083120608F7
:1000400083168800FF3FFF3FFF3FFF3FFF3FFF3F1B
:10005000FF3F0800FF3FFF3FFF3FFF3FFF3FFF3FE6
:10006000FF3F8312FF3FFF3FFF3FFF3FFF3FFF3F49
:10007000FF3F0610FF3FFF3FFF3FFF3FFF3FFF3FB8
:10008000FF3F2C28FF3FFF3F4028FF3FFF3FFF3F40
:10009000FF3FFF3FFF3FFF3FFF3FFF3FFF3FFF3F70
:1000A000FF3F0A12FF3FFF3FFF3FFF3FFF3FFF3F82
:1000B000FF3F0A12FF3FFF3FFF3FFF3FFF3FFF3F72
:1000C000FF3F2108FF3FFF3FFF3FFF3FFF3FFF3F55
:1000D000FF3F0800000000000000000000000000DA
:1000E0000000000000000000000000000000000010
:1000F0000000000000000000000000000000000000
:1001000000000000000000000000000000000000EF
:1001100000000000000000000000000000000000DF
:1001200000000000000000000000000000000000CF
as i earlier said. the remaining space is filled with zeros like those in the last lines above, is this normal? Should those zeros be F's too?
ICPROG unfortunately doesnt work with my programmer, however i found out that writing a new code to the chip "automaticly" erases the old one, so that should not be problem then.
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