Comment on TKey: A reasonably secure RISC-V computer in a USB stick
dannym@lemmy.escapebigtech.info 8 months agothere are use cases, such as security, where you want as few instructions as possible, so a full ARM processor isn’t the best idea
Comment on TKey: A reasonably secure RISC-V computer in a USB stick
dannym@lemmy.escapebigtech.info 8 months agothere are use cases, such as security, where you want as few instructions as possible, so a full ARM processor isn’t the best idea
dragontamer@lemmy.world 8 months ago
On the contrary, RISC-V is typically bigger and less efficient than Cortex-M7 on the Teensy.
There are 10-cent ARM Cortex M0+ processors (M0+ being the smallest ARM). M7 is kinda-small. ARM scales to different sizes and power-efficiencies.
dannym@lemmy.escapebigtech.info 8 months ago
dragontamer@lemmy.world 8 months ago
developer.arm.com/…/Instruction-set-summary
So is the Cortex M7. The entirety of the M0+, M4, and M7 microcontroller cores are very, very small ARMs.
Hmmm. Okay, so its an FPGA Risc-V then.
That’s kind of sad, that means there’s no hope that its as power-efficient as a proper ASIC core like ARM-M7.