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Regular Visitor
yangf3
Posts: 16
Registered: ‎12-20-2007
0

How to solve the unsupported RAM template error

I'm using Spartan xc3s250e and got this synthesis error:

ERROR:Xst:1443 - Unsupported RAM template for signal <signal_array>.

 

I couldn't find detailed information about this error. 

 

The array is defined as

reg [9:0] signal_array [1462:0]; 

 

It is a large array, but there should be sufficient space for it. I tried block RAM with larger size and there's no eeror. But due to the delay requirment, I prefer not to use block RAM.

Expert Contributor
bassman59
Posts: 5,772
Registered: ‎02-25-2008
0

Re: How to solve the unsupported RAM template error


yangf3 wrote:

I'm using Spartan xc3s250e and got this synthesis error:

ERROR:Xst:1443 - Unsupported RAM template for signal <signal_array>.

 

I couldn't find detailed information about this error. 

 

The array is defined as

reg [9:0] signal_array [1462:0]; 

 

It is a large array, but there should be sufficient space for it. I tried block RAM with larger size and there's no eeror. But due to the delay requirment, I prefer not to use block RAM.


 

Showing the rest of your code will help.

 

-a 


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