I’m working on porting the OC8051 project from OpenCores to the Butterfly Platform. The ultimate goal is to have a core that supports a c compiler like gcc or sdcc and that supports wishbone for easily connecting Wings.
I’ve got the design synthesizing but am running into trouble with the ROM. It appears that the tool included to generate roms creates a format that doesn’t work with Webpack. So I’m working on implementing a BRAM based ROM that can be merged into the bitstream with out re-synthesizing everything.