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Remove EXPLICIT_CARRY logic.

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The symbiflow-arch-defs tool chain no longer needs the EXPLICIT_CARRY
within yosys itself.

Signed-off-by: Keith Rothman <537074+litghost@users.noreply.github.com>
This commit is contained in:
Keith Rothman 2019-08-19 08:42:09 -07:00 • committed by Marcelina Kościelnicka
parent 57af8499df
commit 819f1d8c20
3 changed files with 2 additions and 150 deletions
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23
techlibs/xilinx/cells_sim.v
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@ -455,29 +455,6 @@ module CARRY8(
assign CO[7] = S[7] ? CO[6] : DI[7];
endmodule
`ifdef _EXPLICIT_CARRY
module CARRY0(output CO_CHAIN, CO_FABRIC, O, input CI, CI_INIT, DI, S);
parameter CYINIT_FABRIC = 0;
wire CI_COMBINE;
if(CYINIT_FABRIC) begin
assign CI_COMBINE = CI_INIT;
end else begin
assign CI_COMBINE = CI;
end
assign CO_CHAIN = S ? CI_COMBINE : DI;
assign CO_FABRIC = S ? CI_COMBINE : DI;
assign O = S ^ CI_COMBINE;
endmodule
module CARRY(output CO_CHAIN, CO_FABRIC, O, input CI, DI, S);
assign CO_CHAIN = S ? CI : DI;
assign CO_FABRIC = S ? CI : DI;
assign O = S ^ CI;
endmodule
`endif
module ORCY (output O, input CI, I);
assign O = CI | I;
endmodule