NIOS flash programmer question.

Hello all,

I'm having trouble understanding the EPCS flash controller. I use Quartus-II / NIOS version 8.1 build 163. I need to stay at

this version because of legacy systems.

- I have a previous design using a Stratix-II with an EPCS64. I successfully have it copying the EPCS64 image into local SRAM

and run both FPGA configuration and NIOS software [using the uCOS-II OS]. No problems, the mechanism works just fine.

- My newer design uses a Stratix-III with a EPCS64. When I try and use the NIOS flash programmer to do the same, it complains

that my input file is too big. In Quartus-II, the configuration scheme is 'active serial' and device is set for EPCS64 [as it is with

the Stratix-II FPGA]. I've also tried to make the FPGA configuration and NIOS application smaller, but with the same results.

Is there anything different that I should consider or settings when using these different FPGA's ?

Please advise, thank you in advance.