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| author | Eddie Hung <eddie@fpgeh.com> | 2020-01-06 09:44:00 -0800 |
|---|---|---|
| committer | Eddie Hung <eddie@fpgeh.com> | 2020-01-06 09:44:00 -0800 |
| commit | 020606f81c39df234d7a3f5e3e605e5f27422d87 (patch) | |
| tree | 8334168ea6ad76983226fa3bbc631ff151d4fedd /techlibs/ice40/abc9_u.box | |
| parent | 36d79c80d05f93cd4cb565fe7a92d7cb88683852 (diff) | |
| parent | b5f60e055d07579a2d4f23fc053ca030f103f377 (diff) | |
| download | yosys-020606f81c39df234d7a3f5e3e605e5f27422d87.tar.gz yosys-020606f81c39df234d7a3f5e3e605e5f27422d87.tar.bz2 yosys-020606f81c39df234d7a3f5e3e605e5f27422d87.zip | |
Merge remote-tracking branch 'origin/eddie/abc9_refactor' into xaig_arrival_required
Diffstat (limited to 'techlibs/ice40/abc9_u.box')
| -rw-r--r-- | techlibs/ice40/abc9_u.box | 25 |
1 files changed, 15 insertions, 10 deletions
diff --git a/techlibs/ice40/abc9_u.box b/techlibs/ice40/abc9_u.box index f00e247b8..48a51463e 100644 --- a/techlibs/ice40/abc9_u.box +++ b/techlibs/ice40/abc9_u.box @@ -1,13 +1,18 @@ # 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 : $__ICE40_CARRY_WRAPPER (private cell used to preserve +# SB_LUT4+SB_CARRY) +# Outputs: O, CO +# (Exception: carry chain input/output must be the +# last input and output and the entire bus has been +# moved there overriding the otherwise +# alphabetical ordering) +# name ID w/b ins outs +$__ICE40_CARRY_WRAPPER 1 1 5 2 +#A B I0 I3 CI +1231 1205 1285 874 874 # O +675 609 - - 278 # CO |