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AR# 16858

6.1i XST - "INFO:Xst:1787 - Unable to map block block_name on BRAM. Output net_name is not connected to a FF"

Description

Keywords: block, RAM, MAP, mapping, BRAM, counters

Urgency: Standard

General Description:
When I attempt to use the new block RAM logic mapping feature for a counter, the following "INFO" message is reported:

"INFO:Xst:1787 - Unable to map block block_name on BRAM. Output net_name is not connected to a FF."

Solution

XST cannot currently map counters into block RAM; there is currently no known way to work around this issue.
AR# 16858
Date Created 03/12/2003
Last Updated 10/20/2005
Status Archive
Type General Article