4 ms·
Love FPGAs, but they're not very practical if you need to run a non-toy Linux on RISC-V. They will typically top out at 100 MHz for the kind of FPGAs that you
by rwmj 1y ago
Love FPGAs, but they're not very practical if you need to run a non-toy Linux on RISC-V. They will typically top out at 100 MHz for the kind of FPGAs that you and I can afford to buy, and have other problems like limited RAM.
- tucnak 1y agoPrecursor just happens to use Xilinx Spartan 7-class, a 100 MHz VexRISC-V, RV32IMAC + MMU, 4k L1 I/D cache. But these days you could buy Versal devices with 1M+ LUT, and up to 100K DSP slices, in under a thou. However, integrating it—would be the real challenge. The FPGA hardware is sufficient for many non-toy Linux applications; open hardware isn't. This is a gateware limitation, not a hardware one.