For TinyTapeout 1, about 15% of submissions were made with a Hardware Description Language, or HDL. For Tiny Tapeout 2, about 60% of submissions were made with an HDL.
For Tiny Tapeout 3, we are expecting about 60% of submissions to be made with an HDL. To support you, we have some resources here.
Important notes, please read first
Considerations for people moving from FPGA to ASIC
Resources for learning HDL
Handy templates to help submit faster with an HDL
Automatically running cocotb tests