Answers Database
Bitgen M1/M2: Why is there no -t (tie down unused interconnect) or -n (write out tied ncd) for Virtex?
Record #7706
Problem Title:
Bitgen M1/M2: Why is there no -t (tie down unused interconnect) or -n (write out tied ncd)
for Virtex?
Problem Description:
Urgency: Standard
General Description: There is no option in bitgen for Virtex to tie down unused interconnect, or sa
ve that state to an ncd file.
Why is this?
Solution 1:
The Virtex devices have an architecture that makes it easy to tie down, so every design is always ti
ed. Routing special tie signals or
writing out other .ncd files is unnecessary.
End of Record #7706 - Last Modified: 09/27/99 13:36 |
