picorv32_top to instantiate BUFGCTRL, and picorv32.sh to use picorv32.ys script
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@ -2,6 +2,7 @@
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set -ex
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rm -f picorv32.v
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wget https://raw.githubusercontent.com/cliffordwolf/picorv32/master/picorv32.v
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yosys -p 'synth_ice40 -json picorv32.json -top top' picorv32.v picorv32_top.v
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../nextpnr-ice40 --hx8k --asc picorv32.asc --json picorv32.json
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icetime -d hx8k -t picorv32.asc
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yosys picorv32.ys
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../nextpnr-xc7 --json picorv32.json --xdl picorv32.xdl
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#../nextpnr-ice40 --hx8k --asc picorv32.asc --json picorv32.json
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#icetime -d hx8k -t picorv32.asc
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@ -11,13 +11,22 @@ module top (
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output [ 3:0] mem_wstrb,
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input [31:0] mem_rdata
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);
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wire gclk;
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BUFGCTRL clk_gb (
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.I0(clk),
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.CE0(1'b1),
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.S0(1'b1),
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.O(gclk)
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);
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picorv32 #(
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.ENABLE_COUNTERS(0),
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.TWO_STAGE_SHIFT(0),
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.CATCH_MISALIGN(0),
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.CATCH_ILLINSN(0)
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) cpu (
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.clk (clk ),
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.clk (gclk ),
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.resetn (resetn ),
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.trap (trap ),
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.mem_valid(mem_valid),
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