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YosysHQ / apicula

Project Apicula 🐝: bitstream documentation for Gowin FPGAs
MIT License
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Are BRAMs supported? #267

Closed stacksmith closed 3 months ago

stacksmith commented 3 months ago

Having trouble inferring BRAMS on a tang nano9K...

I seem to remember reading elsewhere that BRAMS were not supported yet, but it was a while ago.

yrabbit commented 3 months ago

Do you have a broken example and a compilation log?

You can look into the directory https://github.com/YosysHQ/apicula/tree/master/examples/himbaechel - there is not only direct use of memory primitives (SP, SDP, DP.. etc) but also inferring as part of the RISCV emulator, which works fine on Tangnano9k - https://github.com/YosysHQ/apicula/blob/master/examples/himbaechel/femto-riscv-18.v

stacksmith commented 3 months ago

Thank you, I was hoping to hear that it works. I didn't have working code until today, just got a 65c02 core up with a 2K rom and a 2K RAM using the awful gowin toolchain (takes just over a minute to build!). Tomorrow will rebuild with apicula. Hoping for a faster turnaround, as a minute is way too slow.

Thanks again

stacksmith commented 3 months ago

OK, seems to work fine. Thank you.