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ice40: reduce ABC9 internal fanout warnings with a param for CI->I3

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This commit is contained in:
Eddie Hung 2020-01-24 11:59:48 -08:00
parent da6abc0149
commit b178761551
6 changed files with 26 additions and 32 deletions
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techlibs/ice40/abc9_u.box
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@ -6,13 +6,12 @@
# Box 1 : $__ICE40_CARRY_WRAPPER (private cell used to preserve
# SB_LUT4+SB_CARRY)
# Outputs: O, CO
# (Exception: carry chain input/output must be the
# last input and output and the entire bus has been
# moved there overriding the otherwise
# alphabetical ordering)
# name ID w/b ins outs
$__ICE40_CARRY_WRAPPER 1 1 5 2
#A B I0 I3 CI
#A B I0 I3 CI
1231 1205 1285 874 874 # O
675 609 - - 278 # CO