AVR-Chat

I'm able to write the code in C & its working properly when i simulate the same .. the problem is dumping the code .. when i'm trying to dump the code i encounter the following problem. One more thing i wanted to add was the controller given to me was not a virgin controller it was used earlier by some one else .. I would be delighted if u can provide me the sloution or atleast the root cause of the problem. If i'm overlooking any other settings (i've mentioned all my settings below) plz let me know abt the same. Kindly help me as i'm unable to complete my project.

Thanks & Regards,

Krish.

My device is unable to enter into the programming mode .. its unable to dump the code .. and it pops up the following bug:

Tip: Check the ISP programming frequency specified on the 'Board' page is well below 1/4 of the clock frequency of the device. Extra precaution should be made when using the CKDIV fuse and/or Clock Prescalar Register (CLKPR) on parts supporting this. If this does not help, check your connections.

See the troubleshooting section in the help system for more information on wat may have caused the problems."

Microcontroller - ATmega 88

Crystal - 20 Mhz

Programming mode - ISP (In System Programming)

I'm selecting the following jumper settings while trying to dump the code.

VTARGET ® Mounted

AREF ® Mounted

RESET ® Mounted

XTAL1 ® Mounted

OSCSEL ® Mounted on Pins 2& 3

BSEL2 ® Not - Mounted

PJUMP ® Not - Mounted

Device: ATmega88