Thread

1. rkagerer · 1789796807 · focus · HN ↗

   The RP2350 is Raspberry Pi’s dual-core microcontroller: each processor socket can select either an Arm Cortex-M33 or a RISC-V Hazard3 core at boot.

   Does that mean there are four cores on the die? Is there crazy amounts of MUXing going on? Does the extra, semi-unused area give the chip a premium price tag? Or did I misinterpret this?

   1. raphlinus · 1789800206 · focus · HN ↗

      Yes, four cores in the chip. And yes, there's additional muxing, but I think that adds a fairly small amount of chip area compared with the crossbar. In addition to the two core slots, there are a lot of peripherals contending for single cycle bus access.

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