cyclone III configuration chain problem

Hi,

Thanks for the replies.

Initially I had both nCONFIG connected together, both nSTATUS connected together and both CONF_DONE connected together. The nCEO of the master device ( pin 162 ) was connected to the nCE ( pin 30 ) of the slave. The master is set up for AS and the slave as PS.

Then when trying to figure out why things were not working I split the signals so I could see each FPGA on its own but they are now back together.

The schematic for the config section should hopefully be attached.

The really strange thing is that even when I am only trying to configure one fpga with a pof which holds two sofs it will not configure. Then using the pof with one sof it will configure. Is there anything I need to know about the convert programming files?

One other item I should point out is that my master is at 3v3 as is the config device but the slave is at 2v6. The DCLK, DATA and nCEO all go through MC74VHC1GT50 level shifters. The pull ups on nSTATUS, nCONFIG and CONF_DONE are 10kOhms to 2V6.

Best regards

Gary