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SymbiFlow / yosys

SymbiFlow WIP changes for Yosys Open SYnthesis Suite
http://www.clifford.at/yosys/
ISC License
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Moved techmaps from Yosys to SymbiFlow #8

Closed mkurc-ant closed 5 years ago

mkurc-ant commented 5 years ago

I've added techmaps that allow to synthesize for Vivado P&R using Yosys. I've also moved what was possible of VPR related techmaps according to: https://github.com/SymbiFlow/symbiflow-arch-defs/issues/294

The macro code for synth_xilinx was modified to accomodate changes. I've also added additional flags that allow to disable DRAM and/or BRAM inference.