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nextpnr
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3 Commits

Author SHA1 Message Date
Keith Rothman a30043c8da Fix assorted bugs in FPGA interchange. 
Fixes:
 - Only use map constant pins during routing, and not during placement.
 - Unmapped cell ports have no BEL pins.
 - Fix SiteRouter congestion not taking into account initial expansion.
 - Fix psuedo-site pip output.

Signed-off-by: Keith Rothman <537074+litghost@users.noreply.github.com>
 2021-02-23 14:09:28 -08:00
Keith Rothman 184665652e Finish dedicated interconnect implementation. 
Signed-off-by: Keith Rothman <537074+litghost@users.noreply.github.com>
 2021-02-23 14:09:28 -08:00
Keith Rothman 2fc353d559 Add initial logic for handling dedicated interconnect situations. 
Signed-off-by: Keith Rothman <537074+litghost@users.noreply.github.com>
 2021-02-23 14:09:28 -08:00