Place-and-route can be done with arachne-pnr. Synthesis for iCE40 FPGAs can be done with Yosys. How do I use the Fully Open Source iCE40 Flow? Here is a list of currently supported parts and the corresponding options for arachne-pnr (place and route) and icetime (timing analysis): PartĬurrent work focuses on further improving our timing analysis flow. For example, it seems we can create correct functional Verilog models for all bitstreams generated by Lattice iCEcube2 for the iCE40 HX1K-TQ144 and the iCE40 HX8K-CT256 using our icebox_vlog tool. ![]() We are pretty confident that we have the 1K and 8K devices completely documented. Lattice also sells an iCE40-HX8K Breakout Board featuring an HX8K chip.) What is the Status of the Project? This makes it both ideal for creating bitstream documentations and as a reference platform for general purpose FPGA tool development.Īlso, with the Lattice iCEstick there is a cheap and easy to use development platform available, which makes the part interesting for all kinds of projects. There are not many different kinds of tiles or special function units. It has a very minimalistic architecture with a very regular structure. iCE40 LM, Ultra and UltraLite parts are not yet supported. (Most of the work was done on HX1K-TQ144 and HX8K-CT256 parts.) The iCE40 UltraPlus parts are also supported, including DSPs, oscillators, RGB and SPRAM. The focus of the project is on the iCE40 LP/HX 1K/4K/8K chips. The IceStorm flow (Yosys, Arachne-pnr, and IceStorm) is a fully open source Verilog-to-Bitstream flow for iCE40 FPGAs. Project IceStorm aims at documenting the bitstream format of Lattice iCE40 FPGAs and providing simple tools for analyzing and creating bitstream files. 9.3 Other FPGA bitstream documentation projects What is Project IceStorm?
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