From: Eddie Hung <eddie@fpgeh.com>
Date: Tue, 9 Apr 2019 21:32:10 +0000 (-0700)
Subject: Add delays to cells.box
X-Git-Tag: working-ls180~1208^2~372
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=b9e19071b8596b8d06b99cbb653325c0c9dc330f;p=yosys.git

Add delays to cells.box
---

diff --git a/techlibs/xilinx/cells.box b/techlibs/xilinx/cells.box
index 31ad4a656..c8092db6e 100644
--- a/techlibs/xilinx/cells.box
+++ b/techlibs/xilinx/cells.box
@@ -1,5 +1,13 @@
-MUXF7 1 0 2 1
-1 1
+# Max delays from https://pastebin.com/v2hrcksd
+# from https://github.com/SymbiFlow/prjxray/pull/706#issuecomment-479380321
 
-MUXF8 2 0 2 1
-1 1
+# F7BMUX slower than F7AMUX
+# Inputs: 0 1 S0
+# Outputs: OUT
+F7BMUX 1 0 3 1
+217 223 296
+
+# Inputs: 0 1 S0
+# Outputs: OUT
+MUXF8 2 0 3 1
+104 94 273