Thanks Martin. I would agree that a one off pcb is wasteful especially with many companies having a 5/10 board MOQ.

I remember looking at http://www.ichbinzustaendig.de/dev/meeprommer-en but thought that most of the information their was outdated. Regardless the 74HC595 shift registers mentioned ...

OK.
It works...

It seems the power from Arduino Nano would drop to 3.8v on writes. EEPROM would then disable writes.

Used an external power supply works fine :

$ ./meeprommer3.py -c /dev/ttyUSB0 -W -a 0x0000 -p 64 -f /tmp/test.hex
Writing from 0000 to 03ff
Writing from 0400 to 07ff
Writing from ...

OK.. progress .. I think :wink:

I found this fork on git hub :
https://github.com/pda/pda6502/tree/master/tools

Seems someone updated the python scrip for v3.

I also feel I had an issue with my breadboard!!! .. sigh

I think I can write to the EEPROM now :

$ ./meeprommer3.py -c /dev/ttyUSB0 -p ...

Hi BigEd, yeah no luck with strace.
For Mario's original GUI I get nothing
For rpress's I get the same core dump
Nothing in the leading up strace gives much hints

Thanks thou

Hi Tor,
My user has access to the tty devices. However even as root I get the same issue
Thanks anyways

Hi Martin_H,

I did see your fork on github ;) nice job.
I am using Linux, so that wont be much help for me.

I have the 64bit RXTX libraries installed... I wonder if it depends on the 32bit.
I know someone did a lot more work on the python script.. I may turn to that rather the the UI but I would ...

I know this thread has not seen much activity but... amazing work!

I am having a few issues biulding my programer.
I don't plan to use the pre-made sheild but rather make my own.

First issue is that no matter what Arduino firmware I use.
Mario's or Rpress's I get issues.
It "seems' like the GUI ...