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Diffstat (limited to 'techlibs/ice40/cells_sim.v')
-rw-r--r-- | techlibs/ice40/cells_sim.v | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/techlibs/ice40/cells_sim.v b/techlibs/ice40/cells_sim.v new file mode 100644 index 00000000..a1d9b0ca --- /dev/null +++ b/techlibs/ice40/cells_sim.v @@ -0,0 +1,12 @@ +module SB_LUT4(output O, input I0, I1, I2, I3); + parameter [15:0] INIT = 0; + wire [ 7: 0] s3 = I3 ? INIT[15: 8] : INIT[ 7: 0]; + wire [ 3: 0] s2 = I2 ? s3[ 7: 4] : s3[ 3: 0]; + wire [ 1: 0] s1 = I1 ? s2[ 3: 2] : s2[ 1: 0]; + assign O = I0 ? s1[1] : s1[0]; +endmodule + +module SB_DFF (output reg Q, input C, D); + always @(posedge C) + Q <= D; +endmodule |