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I got almost all of my wishes granted with RP2350

(dmitry.gr)
700 points elipsitz | 2 comments | 08 Aug 24 13:03 UTC | HN request time: 0s | source
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synergy20 ◴[08 Aug 24 15:15 UTC] No.41192422[source]▶
You can pick either ARM cores or RISC-V cores on the same die? Never saw design like this before. Will this impact price and power consumption?

"The Hazard3 cores are optional: Users can at boot time select a pair of included Arm Cortex-M33 cores to run, or the pair of Hazard3 cores. Both options run at 150 MHz. The more bold could try running one RV and one Arm core together rather than two RV or two Arm.

Hazard3 is an open source design, and all the materials for it are here. It's a lightweight three-stage in-order RV32IMACZb* machine, which means it supports the base 32-bit RISC-V ISA with support for multiplication and division in hardware, atomic instructions, bit manipulation, and more."

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jononor ◴[08 Aug 24 17:17 UTC] No.41193928[source]▶
This seems like a great way to test the waters before a potential full-on transition to RISC-V. It allows to validate both technically and market reception, for a much lower cost than taping out a additional chip.
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1. askvictor ◴[09 Aug 24 00:26 UTC] No.41197755[source]▶
Indeed, though I'm curious about the rationale behind it. It is a 'plan B' in case their relationship with ARM sours? It is aiming for cost-cutting in the future (I can't imagine the ARM licences are costing them much given the price of the RP2040, but maybe they're absorbing it to get marketshare)
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2. snvzz ◴[09 Aug 24 00:46 UTC] No.41197846[source]▶
Embracing RISC-V, the high-quality open-source ISA that is rapidly growing the strongest ecosystem, does make a lot of sense.