# Xilinx FPGA version

**URL:** <https://discourse.myriadrf.org/t/xilinx-fpga-version/7030>\
**Category:** LimeSDR\
**Created:** [18 March 2021 18:25 UTC](https://discourse.myriadrf.org/t/xilinx-fpga-version/7030 "2021-03-18T18:25:32Z")\
**Posts on this page:** 1\
**Showing post:** 7

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**Author:** ![mzs](https://yyz2.discourse-cdn.com/flex034/user_avatar/discourse.myriadrf.org/mzs/32/2678_2.png) [@mzs](https://discourse.myriadrf.org/u/mzs)\
**Post date:** [25 March 2021 07:40 UTC](https://discourse.myriadrf.org/t/xilinx-fpga-version/7030/7 "2021-03-25T07:40:21Z")

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Use Xilinx’s MicroBlaze ?

NIOS II is Altera(Intel) 32-bit softcore RISC  
MicroBlaze is Xilinx(AMD) 32-bit/64-bit softcore RISC.  
Both are closed source, and not going to be available to be licensed on their competitors FPGA.

Or you could use an open source [Verilog](https://github.com/search?l=Verilog&q=RISC-V&type=Repositories), [SystemVerilog](https://github.com/search?l=SystemVerilog&q=RISC-V&type=Repositories) or [VHDL](https://github.com/search?l=VHDL&q=RISC-V&type=Repositories) RISC-V core instead. There was a [branch in github](https://github.com/myriadrf/LimeSDR-USB_GW/tree/riscv) to [migrate](https://discourse.myriadrf.org/t/this-is-good-news-risc-v-cpu-core-for-limesdr/1192) the LimeSDR-USB gateware away from the proprietary NIOS II to a RISC-V core, but has not been updated in 5 years, so I suspect it might be a dead end (anyone know more ?). Or look on [opencores](https://opencores.org/) for other softcore options.

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