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AR# 23972 8.2i SP3 Virtex-5 MAP - Enhancement to retarget Virtex-4 RAMB16s to Virtex-5 RAMB18SDPs

Description

Keywords: RAMB16, RAMB18SDP, WIDTH

Prior to 8.2.3i, MAP only retargeted Virtex-4 RAMB16s to RAMB18 or RAMB36_EXP. The following four cases cause a Virtex-4 RAMB16 to be retargeted to a Virtex-5 RAMB18SDP (all involve setting the WIDTH attributes of the RAMB16):

Case 1: READ_WIDTH_A = "36", WRITE_WIDTH_A = "0", READ_WIDTH_B = "0", WRITE_WIDTH_B = any
Case 2: READ_WIDTH_A = any, WRITE_WIDTH_A = "0", READ_WIDTH_B = "0", WRITE_WIDTH_B = "36"
Case 3: READ_WIDTH_A = "0", WRITE_WIDTH_A = "36", READ_WIDTH_B = any, WRITE_WIDTH_B = "0"
Case 4: READ_WIDTH_A = "0", WRITE_WIDTH_A = any, READ_WIDTH_B = "36", WRITE_WIDTH_B = "0"

Solution

This change has been included in the latest 8.2i Service Pack available at:
http://www.xilinx.com/xlnx/xil_sw_updates_home.jsp
The first service pack containing the change is 8.2i Service Pack 3.


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AR# 23972
Date Created
Last Updated 09/15/2006
Status Active
Type
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