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synth_intel_alm: alternative synthesis for Intel FPGAs

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By operating at a layer of abstraction over the rather clumsy Intel primitives,
we can avoid special hacks like `dffinit -highlow` in favour of simple techmapping.

This also makes the primitives much easier to manipulate, and more descriptive
(no more cyclonev_lcell_comb to mean anything from a LUT2 to a LUT6).
This commit is contained in:
Dan Ravensloft 2019-11-19 10:19:00 +00:00 • committed by Marcelina Kościelnicka
parent 4c52691a58
commit 2e37e62e6b
29 changed files with 1662 additions and 1 deletions
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108
techlibs/intel_alm/common/megafunction_bb.v Normal file
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// Intel megafunction declarations, to avoid Yosys complaining.
`default_nettype none
(* blackbox *)
module altera_std_synchronizer(clk, din, dout, reset_n);
parameter depth = 2;
input clk;
input reset_n;
input din;
output dout;
endmodule
(* blackbox *)
module altiobuf_in(datain, dataout);
parameter enable_bus_hold = "FALSE";
parameter use_differential_mode = "FALSE";
parameter number_of_channels = 1;
input [number_of_channels-1:0] datain;
output [number_of_channels-1:0] dataout;
endmodule
(* blackbox *)
module altiobuf_out(datain, dataout);
parameter enable_bus_hold = "FALSE";
parameter use_differential_mode = "FALSE";
parameter use_oe = "FALSE";
parameter number_of_channels = 1;
input [number_of_channels-1:0] datain;
output [number_of_channels-1:0] dataout;
endmodule
(* blackbox *)
module altiobuf_bidir(dataio, oe, datain, dataout);
parameter number_of_channels = 1;
parameter enable_bus_hold = "OFF";
inout [number_of_channels-1:0] dataio;
input [number_of_channels-1:0] datain;
output [number_of_channels-1:0] dataout;
input [number_of_channels-1:0] oe;
endmodule
(* blackbox *)
module altsyncram(clock0, clock1, address_a, data_a, rden_a, wren_a, byteena_a, q_a, addressstall_a, address_b, data_b, rden_b, wren_b, byteena_b, q_b, addressstall_b, clocken0, clocken1, clocken2, clocken3, aclr0, aclr1, eccstatus);
parameter lpm_type = "altsyncram";
parameter operation_mode = "dual_port";
parameter ram_block_type = "auto";
parameter intended_device_family = "auto";
parameter power_up_uninitialized = "false";
parameter read_during_write_mode_mixed_ports = "dontcare";
parameter byte_size = 8;
parameter widthad_a = 1;
parameter width_a = 1;
parameter width_byteena_a = 1;
parameter numwords_a = 1;
parameter clock_enable_input_a = "clocken0";
parameter widthad_b = 1;
parameter width_b = 1;
parameter numwords_b = 1;
parameter address_aclr_b = "aclr0";
parameter address_reg_b = "";
parameter outdata_aclr_b = "aclr0";
parameter outdata_reg_b = "";
parameter clock_enable_input_b = "clocken0";
parameter clock_enable_output_b = "clocken0";
input clock0, clock1;
input [widthad_a-1:0] address_a;
input [width_a-1:0] data_a;
input rden_a;
input wren_a;
input [(width_a/8)-1:0] byteena_a;
input addressstall_a;
output [width_a-1:0] q_a;
input wren_b;
input rden_b;
input [widthad_b-1:0] address_b;
input [width_b-1:0] data_b;
input [(width_b/8)-1:0] byteena_b;
input addressstall_b;
output [width_b-1:0] q_b;
input clocken0;
input clocken1;
input clocken2;
input clocken3;
input aclr0;
input aclr1;
output eccstatus;
endmodule