Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
18 years ago

Cyclone III AS configuration bizarreness

I am using a cyclone III (EP3C25F324C8N) with an EPCS16 configuration device. I am programming the configuration device through the FPGA with the serial flash loader. The problem is that the Cyc...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

Could this be a problem just in Quartus 7.1. We are having a similar problem and we did find that for a small design just RTL (Cyclone III C25, Industrial samples)

Quartus 8.0 works with and without the capacitance that people is talking about with and without compress programming file

Quartus 7.1 SP1 seems to work better with uncompress data streams (no idea why) and works with compress data stream when using the capacitance.

With a design which includes an embedded Nios running form embedded Memories it works in 8.0 and it doesn´t in 7.1.

That´s it mean that the .sof is different from the versions and it is just a matter of luck? Otherwise it something special when using Quartus 8.0 about loading from the EPCS?

Could it be something depending on the streaming of the configuration file?