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It's an instruction set architecture with different extensions, a "family" if you would. Just like ARM has 32-bit Cortex M0..M4 microcontrollers, as well as AR
by NonEUCitizen 10y ago
It's an instruction set architecture with different extensions, a "family" if you would. Just like ARM has 32-bit Cortex M0..M4 microcontrollers, as well as ARM64 with MMU and the works.
These RISC-V silicon implementations on CrowdSupply are on the low end, RV32I (32-bits, integer-only). The SiFive one supports M (multiply) A (atomic) C (compressed, like Thumb for ARM) extensions. No, you cannot build a smartphone with these.
But there are other implementations. An example high-end implementation, 64-bits (you cannot buy silicon yet, but maybe you can burn your own FPGA) is BOOM:
https://github.com/ucb-bar/riscv-boom