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fabulous: Allow adding extra custom prims and map rules

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Signed-off-by: gatecat <gatecat@ds0.me>
This commit is contained in:
gatecat 2022-11-16 13:35:37 +01:00 • committed by myrtle
parent f111bbdf40
commit b6467f0801
4 changed files with 53 additions and 0 deletions
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3
tests/arch/fabulous/custom_map.v Normal file
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module AND(input [7:0] A, B, output [7:0] Y);
ALU #(.MODE("AND")) _TECHMAP_REPLACE_ (.A(A), .B(B), .Y(Y));
endmodule

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tests/arch/fabulous/custom_prims.v Normal file
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(* blackbox *)
module AND(input [7:0] A, B, output [7:0] Y);
endmodule
(* blackbox *)
module ALU(input [7:0] A, B, output [7:0] Y);
parameter MODE = "";
endmodule

10
tests/arch/fabulous/customisation.ys Normal file
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read_verilog <<EOT
module prim_test(input [7:0] a, b, output [7:0] q);
AND and_i (.A(a), .B(b), .Y(q));
endmodule
EOT
# Test adding custom primitives and techmap rules
synth_fabulous -top prim_test -extra-plib custom_prims.v -extra-map custom_map.v
cd prim_test
select -assert-count 1 t:ALU