From fc3d74616f284eaccdc7d105cd77572953602d7f Mon Sep 17 00:00:00 2001
From: Eddie Hung <eddie@fpgeh.com>
Date: Fri, 12 Jul 2019 00:50:42 -0700
Subject: Combine SB_CARRY+SB_LUT into one $__ICE40_CARRY_LUT4 box

---
 techlibs/ice40/abc_u.box | 14 +++++---------
 1 file changed, 5 insertions(+), 9 deletions(-)

(limited to 'techlibs/ice40/abc_u.box')

diff --git a/techlibs/ice40/abc_u.box b/techlibs/ice40/abc_u.box
index f44deabc4..3a71addef 100644
--- a/techlibs/ice40/abc_u.box
+++ b/techlibs/ice40/abc_u.box
@@ -3,15 +3,11 @@
 # NB: Inputs/Outputs must be ordered alphabetically
 #     (with exceptions for carry in/out)
 
-# Inputs: I0 I1 CI
-# Outputs: CO
+# Inputs: A B CI
+# Outputs: O CO
 #   (NB: carry chain input/output must be last
 #        input/output and have been moved there
 #        overriding the alphabetical ordering)
-SB_CARRY 1 1 3 1
-675 609 278
-
-# Inputs: I0 I1 I2 I3
-# Outputs: O
-SB_LUT4 2 1 4 1
-1285 1231 1205 874
+$__ICE40_CARRY_LUT4 1 1 3 2
+1231 1205 875
+675  609  278
-- 
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