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# 9481

4.1i Virtex MAP - Report shows slices usage is significantly higher than 2.1i/Device does not fit


Keywords: 3.1i, MAP, slice, usage, report, overmap, fit, more

Urgency: Standard

General Description:
The 4.1i/3.1i mapper may show a significant difference in the slice usage as opposed to the 2.1i MAP report. In some cases, the device does not fit.


Device utilization will return to 2.1i levels if the "-r" switch is used to turn off register ordering.

The difference is due to the fact that register ordering was not working properly in previous releases. It is now fully functional, but has an impact on density.
AR# 9481
日期 06/13/2002
状态 Archive
Type 综合文章