logger -nowarn "Yosys has only limited support for tri-state logic at the moment\. .*"
logger -nowarn "Ignoring boxed module .*\."

read_verilog <<EOT
module top(input [24:0] A, input [17:0] B, output [47:0] P);
DSP48E1 #(.PREG(0)) dsp(.A(A), .B(B), .P(P));
endmodule
EOT
techmap -autoproc -wb -map +/xilinx/cells_sim.v
opt
scc -expect 0


design -reset
read_verilog <<EOT
module top(input signed [24:0] A, input signed [17:0] B, output [47:0] P);
assign P = A * B;
endmodule
EOT
synth_xilinx -abc9
techmap -autoproc -wb -map +/xilinx/cells_sim.v
opt -full -fine
select -assert-count 1 t:$mul
select -assert-count 0 t:* t:$mul %D


design -reset
read_verilog -icells -formal <<EOT
module top(output [42:0] P);
\$__MUL25X18 mul (.A(42), .B(42), .Y(P));
assert property (P == 42*42);
endmodule
EOT
async2sync
techmap -map +/xilinx/xc7_dsp_map.v
verilog_defaults -add -D ALLOW_WHITEBOX_DSP48E1
synth_xilinx -abc9
techmap -autoproc -wb -map +/xilinx/cells_sim.v
opt -full -fine
select -assert-count 0 t:* t:$assert %d
sat -verify -prove-asserts


design -reset
read_verilog <<EOT
module top(input signed [29:0] A, input signed [17:0] B, output signed [47:0] P);
wire [47:0] casc;
DSP48E1 #(.AREG(1)) u1(.A(A), .B(B), .PCOUT(casc));
DSP48E1 #(.AREG(1)) u2(.A(A), .B(B), .PCIN(casc), .P(P));
endmodule
EOT
synth_xilinx -run :prepare
abc9
clean
check
logger -expect-no-warnings