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#!/bin/bash
set -ex
XILINX_DIR=/opt/Xilinx/14.5/ISE_DS/ISE/
../../yosys - <<- EOT
# read design
read_verilog counter.v
# high-level synthesis
hierarchy -check -top counter
proc; opt; fsm; opt; techmap; opt
# mapping logic to LUTs using Berkeley ABC
abc -lut 6; opt
# map internal cells to FPGA cells
techmap -map cells.v; opt
# write netlist
write_verilog -noattr testbench_synth.v
EOT
iverilog -o testbench_gold counter_tb.v counter.v
iverilog -o testbench_gate counter_tb.v testbench_synth.v \
$XILINX_DIR/verilog/src/{glbl,unisims/{FDRE,LUT1,LUT2,LUT3,LUT4,LUT5,LUT6}}.v
./testbench_gold > testbench_gold.txt
./testbench_gate > testbench_gate.txt
if diff -u testbench_gold.txt testbench_gate.txt; then
set +x; echo; echo; banner " PASS "
else
exit 1
fi
if [ "$*" = "-clean" ]; then
rm -f testbench_{synth.v,{gold,gate}{,.txt}}
fi
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