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Legacy EPCS Flash Controller

Altera_Forum
Honored Contributor II
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Hello, 

 

I am using quartus 14.1. I have a NIOS based system having a legacy EPCS controller interfaced to Spansion device. 

With Legacy EPCS controller IP, I could flash FPGA + NIOS image using .jic file and get the build to work. 

 

However, when I program the flash using .pof file, I could see only FPGA is up, whereas NIOS application does not work. 

 

Then I changed the controller to Altera Serial Flash controller. With this, I could get both FPGA and NIOS work. 

 

I am very curious to understand the difference between these two IPs?  

Why .pof works with a build having Altera Serial Flash controller, but not with Legacy EPCS controller. 

 

Help is appreciated! 

 

Thanks
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