Hi, The HiFive1 is a 32 bit integer only machine, sadly. I guess I must admit being a bit old to re-do software floating point. I still have nightmares of ARM and then later 68000 systems. Your right about the HiFive Unleashed would be a good system, but, expensive. There is a group out of China who is doing a RISC-V 64 bit with floating point. I've ordered one and we'll see what it looks like when it arrives. https://www.indiegogo.com/projects/sipeed-maix-the-world-first-risc-v-64-ai-module#/ The campaign seems closed, but, I'm sure if this works and the team doing this doesn't burn out they will start selling them somewhere. cheers bruce
> These are pretty new, and the prices are higher than other ISAs with > economies-of-scale and mostly long-amortized development costs (and > there's perhaps no loss-leaders or dumping for market share or lock-in, > like we sometimes see in industry). > > The HiFive1 is more like a $60 Arduino or maybe RasPi: > https://www.sifive.com/boards/hifive1 > > The HiFive Unleashed, when combined with their Expansion Board, could be > used to make a workstation, but is pretty new, and costs thousands of > dollars: > https://www.sifive.com/boards/hifive-unleashed > > I've seen "RISC-V" USB dongle-like boards, but the ones I've seen are > just little FPGA experimenter boards burnt with RISC-V logic. > > That's what I found, last time I looked. Paulo or others might know > other boards. > > There's also always emulators, and RISC-V logic you program yourself on > bigger general-purpose FPGA boards. (Programming FPGA yourself means > you're one small enhancement away from being able to call yourself a CPU > designer. :) If you do FPGA, it would help to try to use an open > toolchain, but I think the options for that are still relatively early > and improving. (Last I looked, the open toolchains would let you use > only a few small FPGAs, but I saw something the other day that suggests > the environment is improving, so look for the latest info/news, whenever > you start.) > > -- > You received this message because you are subscribed to the Google Groups > "Racket Users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to racket-users+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to racket-users+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
