mirror of
https://github.com/YosysHQ/yosys
synced 2025-11-03 21:09:12 +00:00
186 lines
4.8 KiB
Text
186 lines
4.8 KiB
Text
read_verilog << EOT
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module ibuf ((* iopad_external_pin *) input i, output o); endmodule
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module obuf (input i, (* iopad_external_pin *) output o); endmodule
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module obuft (input i, input oe, (* iopad_external_pin *) output o); endmodule
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module iobuf (input i, input oe, output o, (* iopad_external_pin *) inout io); endmodule
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module buf_inside (input i, output o);
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obuf b (.i(i), .o(o));
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endmodule
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module a(input i, output o);
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assign o = i;
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endmodule
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module b(input i, output o);
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ibuf b (.i(i), .o(o));
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endmodule
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module c(input i, output o);
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obuf b (.i(i), .o(o));
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endmodule
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module d(input i, oe, output o, o2, o3);
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assign o = oe ? i : 1'bz;
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assign o2 = o;
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assign o3 = ~o;
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endmodule
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module e(input i, oe, inout io, output o2, o3);
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assign io = oe ? i : 1'bz;
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assign o2 = io;
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assign o3 = ~io;
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endmodule
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module f(output o, o2);
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assign o = 1'bz;
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endmodule
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module g(inout io, output o);
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assign o = io;
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endmodule
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module h(inout io, output o, input i);
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assign io = i;
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assign o = io;
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endmodule
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module i(input i, output o);
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buf_inside b (.i(i), .o(o));
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endmodule
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module j(input i, output o);
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wire tmp;
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obuf b (.i(i), .o(tmp));
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assign o = tmp;
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endmodule
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module k(inout o, o2);
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assign o = 1'bz;
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endmodule
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EOT
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opt_clean
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tribuf
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simplemap
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iopadmap -bits -inpad ibuf o:i -outpad obuf i:o -toutpad obuft oe:i:o -tinoutpad iobuf oe:o:i:io a b c d e f g h i j k
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opt_clean
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hierarchy -check
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check
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select -assert-count 1 a/t:ibuf
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select -assert-count 1 a/t:obuf
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select -set ib w:i %a %co a/t:ibuf %i
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select -set ob w:o %a %ci a/t:obuf %i
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select -assert-count 1 @ib
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select -assert-count 1 @ob
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select -assert-count 1 @ib %co %co @ob %i
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select -assert-count 1 b/t:ibuf
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select -assert-count 1 b/t:obuf
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select -set ib w:i %a %co b/t:ibuf %i
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select -set ob w:o %a %ci b/t:obuf %i
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select -assert-count 1 @ib
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select -assert-count 1 @ob
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select -assert-count 1 @ib %co %co @ob %i
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select -assert-count 1 c/t:ibuf
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select -assert-count 1 c/t:obuf
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select -set ib w:i %a %co c/t:ibuf %i
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select -set ob w:o %a %ci c/t:obuf %i
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select -assert-count 1 @ib
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select -assert-count 1 @ob
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select -assert-count 1 @ib %co %co @ob %i
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select -assert-count 2 d/t:ibuf
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select -assert-count 2 d/t:obuf
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select -assert-count 1 d/t:obuft
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select -set ib w:i %a %co d/t:ibuf %i
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select -set oeb w:oe %a %co d/t:ibuf %i
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select -set ob w:o %a %ci d/t:obuft %i
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select -set o2b w:o2 %a %ci d/t:obuf %i
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select -set o3b w:o3 %a %ci d/t:obuf %i
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select -assert-count 1 @ib
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select -assert-count 1 @oeb
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select -assert-count 1 @ob
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select -assert-count 1 @o2b
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select -assert-count 1 @o3b
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select -assert-count 1 @ib %co %co @ob %i
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select -assert-count 1 @oeb %co %co @ob %i
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select -assert-count 1 @ib %co %co @o2b %i
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select -assert-count 1 @ib %co %co t:$_NOT_ %i
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select -assert-count 1 @o3b %ci %ci t:$_NOT_ %i
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select -assert-count 2 e/t:ibuf
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select -assert-count 2 e/t:obuf
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select -assert-count 1 e/t:iobuf
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select -set ib w:i %a %co e/t:ibuf %i
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select -set oeb w:oe %a %co e/t:ibuf %i
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select -set iob w:io %a %ci e/t:iobuf %i
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select -set o2b w:o2 %a %ci e/t:obuf %i
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select -set o3b w:o3 %a %ci e/t:obuf %i
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select -assert-count 1 @ib
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select -assert-count 1 @oeb
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select -assert-count 1 @iob
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select -assert-count 1 @o2b
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select -assert-count 1 @o3b
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select -assert-count 1 @ib %co %co @iob %i
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select -assert-count 1 @oeb %co %co @iob %i
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select -assert-count 1 @iob %co %co @o2b %i
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select -assert-count 1 @iob %co %co t:$_NOT_ %i
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select -assert-count 1 @o3b %ci %ci t:$_NOT_ %i
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select -assert-count 2 f/t:obuft
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select -assert-count 1 g/t:obuf
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select -assert-count 1 g/t:iobuf
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select -assert-count 1 h/t:ibuf
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select -assert-count 1 h/t:iobuf
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select -assert-count 1 h/t:obuf
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select -assert-count 1 i/t:ibuf
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select -assert-count 0 i/t:obuf
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select -assert-count 1 j/t:ibuf
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select -assert-count 1 j/t:obuf
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select -assert-count 2 k/t:iobuf
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# Check that \init attributes get moved from output buffer
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# to buffer input
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design -reset
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read_verilog << EOT
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module obuf (input i, (* iopad_external_pin *) output o); endmodule
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module obuft (input i, input oe, (* iopad_external_pin *) output o); endmodule
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module iobuf (input i, input oe, output o, (* iopad_external_pin *) inout io); endmodule
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module sub(input i, output o); endmodule
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module a(input i, (* init=1'b1 *) output o);
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sub s(.i(i), .o(o));
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endmodule
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module b(input [1:0] i, oe, (* init=2'b1x *) output [1:0] o);
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wire [1:0] w;
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sub s1(.i(i[0]), .o(w[0]));
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sub s2(.i(i[1]), .o(w[1]));
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assign o = oe ? w : 2'bz;
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endmodule
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module c(input i, oe, (* init=2'b00 *) inout io, output o1, o2);
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assign io = oe ? i : 1'bz;
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assign {o1,o2} = {io,io};
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endmodule
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EOT
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opt_clean
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tribuf
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simplemap
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iopadmap -bits -outpad obuf i:o -toutpad obuft oe:i:o -tinoutpad iobuf oe:o:i:io
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select -assert-count 1 a/c:s %co a/a:init=1'b1 %i
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select -assert-count 1 a/a:init
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select -assert-count 1 b/c:s* %co %a b/a:init=2'b1x %i
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select -assert-count 1 b/a:init
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select -assert-count 1 c/t:iobuf %co c/a:init=2'b00 %i
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select -assert-count 1 c/a:init
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