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EPCS4 COntroller Problem

Altera_Forum
Honored Contributor II
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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
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Altera_Forum
Honored Contributor II
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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
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