[libre-riscv-dev] 130nm for the hackers : finally a reality ?

[Staf Verhaegen]

Luke Kenneth Casson Leighton schreef op wo 01-07-2020 om 14:56 [+0100]:
> 
> yes.  Raptor Engineering is working on doing that litex testing and
> confirmation.
> 
> just so you know: they... found several deep flaws in litex peripherals,
> such as the QSPI code.  it was not only terribly slow, the FSM would only
> have worked on a few SPI NOR ICs.
> 
> their version saturates the QSPI bus and properly implements the SPI
> protocol as well.

Is there already a design with mixed litex and nmigen code ?
If so, it would save me from reinventing the wheel for the Retro-uC.

greets,
Staf.