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Altera_Forum
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13 years ago

First in Last out buffer consuming too much resources

Hi all, I'm trying to implement a first in last out buffer, that has the soul purpose of flipping image data horizontally. The image comes in as a stream of pixels in the order (1,1) , (2...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

I found the problem - you didnt constrain the read and write addresses, so they were being made as 32 bit values. Then it could not fit these in the memory you infered, so wont create a memory. I constrained them with

read : integer range 0 to BUFFER_SIZE-1;

and it infered a ram. It even worked with the origional variables.