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Cleanup ice40 boxes

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This commit is contained in:
Eddie Hung 2019-12-31 18:29:37 -08:00
parent b2046a2114
commit 2358320f51
3 changed files with 43 additions and 30 deletions
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24
techlibs/ice40/abc9_lp.box
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@ -1,13 +1,17 @@
# From https://github.com/cliffordwolf/icestorm/blob/be0bca0/icefuzz/timings_lp8k.txt
# NB: Inputs/Outputs must be ordered alphabetically
# (with exceptions for carry in/out)
# NB: Box inputs/outputs must each be in the same order
# as their corresponding module definition
# (with exceptions detailed below)
# Inputs: A B I0 I3 CI
# Outputs: O CO
# (NB: carry chain input/output must be last
# input/output and have been moved there
# overriding the alphabetical ordering)
$__ICE40_CARRY_WRAPPER 1 1 5 2
589 558 661 465 465
675 609 - - 186
# Box 1 : $__ICE40_CARRY_WRAPPER (private cell used to preserve
# SB_LUT4+SB_CARRY)
# (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
589 558 661 465 465 # O
675 609 - - 186 # CO