yosys/techlibs/ice40/abc_hx.box

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# From https://github.com/cliffordwolf/icestorm/blob/be0bca0/icefuzz/timings_hx8k.txt
# NB: Inputs/Outputs must be ordered alphabetically
# Inputs: C D
# Outputs: Q
SB_DFF 1 0 2 1
- -
# Inputs: C D E
# Outputs: Q
SB_DFFE 2 0 3 1
- - -
# Inputs: C D R
# Outputs: Q
SB_DFFSR 3 0 3 1
- - -
# Inputs: C D R
# Outputs: Q
SB_DFFR 4 0 3 1
- - -
# Inputs: C D S
# Outputs: Q
SB_DFFSS 5 0 3 1
- - -
# Inputs: C D S
# Outputs: Q
SB_DFFS 6 0 3 1
- - -
# Inputs: C D E R
# Outputs: Q
SB_DFFESR 7 0 4 1
- - - -
# Inputs: C D E R
# Outputs: Q
SB_DFFER 8 0 4 1
- - - -
# Inputs: C D E S
# Outputs: Q
SB_DFFESS 9 0 4 1
- - - -
# Inputs: C D E S
# Outputs: Q
SB_DFFES 10 0 4 1
- - - -
# Inputs: C D
# Outputs: Q
SB_DFFN 11 0 2 1
- -
# Inputs: C D E
# Outputs: Q
SB_DFFNE 12 0 3 1
- - -
# Inputs: C D R
# Outputs: Q
SB_DFFNSR 13 0 3 1
- - -
# Inputs: C D R
# Outputs: Q
SB_DFFNR 14 0 3 1
- - -
# Inputs: C D S
# Outputs: Q
SB_DFFNSS 15 0 3 1
- - -
# Inputs: C D S
# Outputs: Q
SB_DFFNS 16 0 3 1
- - -
# Inputs: C D E R
# Outputs: Q
SB_DFFNESR 17 0 4 1
- - - -
# Inputs: C D E R
# Outputs: Q
SB_DFFNER 18 0 4 1
- - - -
# Inputs: C D E S
# Outputs: Q
SB_DFFNESS 19 0 4 1
- - - -
# Inputs: C D E S
# Outputs: Q
SB_DFFNES 20 0 4 1
- - - -
# Inputs: CI I0 I1
# Outputs: CO
SB_CARRY 21 1 3 1
126 259 231
# Inputs: I0 I1 I2 I3
# Outputs: O
SB_LUT4 22 1 4 1
449 400 379 316