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AR# 11600

3.1i CORE Generator - Distributed Memory v3 parameter file (.xco) is not compatible with Distributed Memory v4_x.

Description

Keywords: COREGen, CORE Generator, distributed memory, dist mem, latency, pipeline stages, input_options.

Urgency: Standard

General Description
The parameters for the Distributed Memory core have changed between "dist_mem_v3_x" and "dist_mem_v4_x"; therefore, the .xco files are no longer compatible.

Solution

1

The best work-around is to generate the latest version of the Distributed Memory core by re-entering the parameters through the customization GUI.

2

If CORE Generator is being run in batch mode and you need to use the .xco file from the v3 version, the following parameters must be changed:

The following parameter existed in the Distributed Memory v3_x core:

input_options = "registered" or "non_registered"
pipeline_stages= "0" or "1"

In Distributed Memory v4_x, the following parameters exist:

input_options = "registered" or "non_registered"
latency =

(Note that "pipeline_stages" has changed to "latency." Also, latency = pipeline_stages + input_options, where input_option = 1 for registered and input_option = 0 for non_registered.)
AR# 11600
Date Created 05/14/2001
Last Updated 08/23/2002
Status Archive
Type General Article