From 42d5d94a5d28c251dbee62316ba6c1cb7cd71f24 Mon Sep 17 00:00:00 2001 From: Clifford Wolf Date: Thu, 5 Mar 2015 20:37:55 +0100 Subject: Added very first version of "synth_ice40" --- techlibs/ice40/cells_sim.v | 12 ++++++++++++ 1 file changed, 12 insertions(+) create mode 100644 techlibs/ice40/cells_sim.v (limited to 'techlibs/ice40/cells_sim.v') 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 -- cgit v1.2.3