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| author | Eddie Hung <eddie@fpgeh.com> | 2020-01-28 12:46:18 -0800 |
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| committer | Eddie Hung <eddie@fpgeh.com> | 2020-01-28 12:46:18 -0800 |
| commit | a855f23f22c9e6dbba5ff17a9541a7d26342b56a (patch) | |
| tree | f62715ee5a790615d8d4fcda7814a940608c7310 /techlibs/ice40/abc9_u.box | |
| parent | f5e0a07ad679696b0d3077ef877941d4c1f864d7 (diff) | |
| parent | 7939727d14f44b5d56ca3806d0907e9fceea2882 (diff) | |
| download | yosys-a855f23f22c9e6dbba5ff17a9541a7d26342b56a.tar.gz yosys-a855f23f22c9e6dbba5ff17a9541a7d26342b56a.tar.bz2 yosys-a855f23f22c9e6dbba5ff17a9541a7d26342b56a.zip | |
Merge remote-tracking branch 'origin/master' into eddie/opt_merge_init
Diffstat (limited to 'techlibs/ice40/abc9_u.box')
| -rw-r--r-- | techlibs/ice40/abc9_u.box | 24 |
1 files changed, 14 insertions, 10 deletions
diff --git a/techlibs/ice40/abc9_u.box b/techlibs/ice40/abc9_u.box index f00e247b8..3d4b93834 100644 --- a/techlibs/ice40/abc9_u.box +++ b/techlibs/ice40/abc9_u.box @@ -1,13 +1,17 @@ # From https://github.com/cliffordwolf/icestorm/blob/be0bca0/icefuzz/timings_up5k.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 -1231 1205 1285 874 874 -675 609 - - 278 +# 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 +1231 1205 1285 874 874 # O +675 609 - - 278 # CO |