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Altera_Forum's avatar
Altera_Forum
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19 years ago

EPCS4 COntroller Problem

Dear Sir,

We are using altera Cyclone2 Fpga in our board. we made one custom

board with EP2c8Q208C8 Cyclone 2 FPGA. we are using EPCS Controller for

Configuration device for FPGA and as well as Normal Serial Flash. We have

tested our board with LED Test program. On that process we have used

Flash Programmer toool for FPGA Image and Software files. After Power

on reset Program is working fine. On that Time Code size is only 1K Bytes

In My board External RAM is also available. In LED Program Software

Project We setted All memory options in SYstem Library options to

On-Chip Memory.

Then We started testing LCD Interface. On that Program is downloading

succesfully. In this Prgram total Program memory size is 20Kbytes. So what

are the setting to be set in System Library. At Present I setted Program

memory option as External RAM, Read/only memory as EPCS and Read/Write

memory as External RAM. In this Configuration Program is downloading.

But Program is not working after Power On Reset.

Sorry for Inconvinience, We are facing this problem from somany days.

Please help us.Plz give me some suggestions.I u want my project i will

send it to you.

Thanking You

Regds

ATLURI

1 Reply

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor

    Hi atluri,

    > Read/only memory as EPCS

    Put your read only memory somewhere else -- like external RAM. Otherwise, the loader will try

    to put your consts, string consts, etc. in the EPCS ROM -- which isn't what you want ;-)

    Regards,

    --Scott