EPCS read problem

[Altera_Forum]

Hello All, 

 I have a problem with a access to the EPCS . I have a NIOS design with epcs controller. My SW use the altera_avalon_epcs_flash_controller. My HW is a “NiosII Development Board Cyclon (1C20)” and a “NiosII Development Board CyclonII (2C35)”. My design SW is QuartusII 9.0 and 9.1.  1) I load the design with JTAG to the HW I can read an write from/to the EPCS 2) I program this design to EPCS and load from this I can read and write from/to the EPCS 3) I program this design to parallel FLASH and load from this I can NOT read the EPCS. The access to EPCS is not possible. The return value of alt_epcs_flash_init is -19 the return value is -22 if OK. The EPCS is unrealized. This problem is with both Quartus versions and both EVA boards.  Why cannot read EPCS if design is load from parallel Flash?  Kind regards weibu

[Altera_Forum]

There was an issue when both CFI and EPCS were present and included in SOPC, but that was a couple of years ago Quartus 6 

There was a "workaround" as we had used both at the same time, fpga image from cfi and EPCS available for access to store another image + SW + user data

[Altera_Forum]

I have not understood this completely. What I must do with it I can read from the EPCS. 

 Thanks weibu