We have detected your current browser version is not the latest one. Xilinx.com uses the latest web technologies to bring you the best online experience possible. Please upgrade to a Xilinx.com supported browser:Chrome, Firefox, Internet Explorer 11, Safari. Thank you!

AR# 15124

10.1 Constraints Editor - Initialization value of block RAM is out of range of the actual RAMB4s


When I initialize a RAMB4 in Constraints Editor, the tool allows me to enter value out of range of this block RAM. What is the actual range?


For RAMB4, the range for the INIT values should be from 00 to 09 only and no parity. Currently, Constraints Editor only applies the checks for the RAMB16 values. 


Constraints Editor in 11.1 no longer supports the INIT values.

AR# 15124
Date Created 09/03/2007
Last Updated 05/14/2014
Status Archive
Type General Article