caiyu/nextpnr
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4 Commits

Author SHA1 Message Date
Sylvain Munaut
d6fd0e7e5b common/placer1: In random pick, only use grid if there is more than 64 BELs 
If you have a large grid and very few BELs of a given type, picking a
random grid location yields very little odds of finding a BEL of that
type.

So for those, just put all of them at (0,0) and do a true random pick.

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
 2018-11-19 18:52:40 +01:00
Miodrag Milanovic
93a0d24560 Use settings for placer1 and router1 2018-08-09 18:39:10 +02:00
David Shah
b937e6defe Add constraint weight as a command line option 
Signed-off-by: David Shah <davey1576@gmail.com>
 2018-08-03 18:31:54 +02:00
Clifford Wolf
7daa8524c8 Add ctx->place() API 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2018-07-11 18:15:08 +02:00