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ok thats right is all the same but the pc has changeed for 1,5 year but for a month i can programm with this.

yes i have now 12 devices that i can't programm again it was all new devices.

you have no idea what can change but the funny think is i can programm a new device one time and than is out to programm it.

mm i think you don't understand it.

my programmer circuit is ok and works good bevor. i use it over 2 years long now and i have net hed any problem with the programmer and reprogramming the mcu.

this problemm is now here. i can programm new mcu and the next time i didn't can programm it. noting change on the programmer hardware and no changes on the FM sw!

The circuit is from:
http://www.esacademy.com/software/flashmagic/appnotes/ISPHardwareEntryAppNote.pdf
site 5 and it works great. ok.

now you think after this the entry mode isn't ok?

thanks

"Use DTR and RTS to enter ISP mode"  if you mean this, i did'nt change everything.

now i have connnect a lcd display on the i2c bus and if it will programm secound time any data trash came.
this is only on some mcu's.

i can programm every mcu one time the next time i't don't will programm it.

thanks



Post Edited (09-20-06 13:45)

Hey,

i use Flash Magic Programmer a long time ago. I have had no problem with reprogramming the Device. Now i start to programm a device and it is done but i will reporgramm the same device nothing go.
I have not change any values it is all the same as before.

Flash magic can not conect after programing to the device. But the device is running.

Thanks