Danny M@lemmy.escapebigtech.info to Technology@lemmy.worldEnglish · edit-211 months agoTKey: A reasonably secure RISC-V computer in a USB stickdev.tillitis.seexternal-linkmessage-square33fedilinkarrow-up1127arrow-down11file-textcross-posted to: [email protected]
arrow-up1126arrow-down1external-linkTKey: A reasonably secure RISC-V computer in a USB stickdev.tillitis.seDanny M@lemmy.escapebigtech.info to Technology@lemmy.worldEnglish · edit-211 months agomessage-square33fedilinkfile-textcross-posted to: [email protected]
minus-squareDanny M@lemmy.escapebigtech.infoOPlinkfedilinkEnglisharrow-up4·edit-211 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. You may want to read the threat model page: https://tillitis.se/products/threat-model/
minus-squaredragontamer@lemmy.worldlinkfedilinkEnglisharrow-up2·11 months agoOn 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.
minus-squareDanny M@lemmy.escapebigtech.infoOPlinkfedilinkEnglisharrow-up3·edit-211 months agodeleted by creator
minus-squaredragontamer@lemmy.worldlinkfedilinkEnglisharrow-up4·11 months ago in this case the instruction set is extremely small https://developer.arm.com/documentation/dui0646/c/The-Cortex-M7-Instruction-Set/Instruction-set-summary So is the Cortex M7. The entirety of the M0+, M4, and M7 microcontroller cores are very, very small ARMs. iCE40 DSPs 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.
there are use cases, such as security, where you want as few instructions as possible, so a full ARM processor isn’t the best idea. You may want to read the threat model page: https://tillitis.se/products/threat-model/
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.
deleted by creator
https://developer.arm.com/documentation/dui0646/c/The-Cortex-M7-Instruction-Set/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.