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Isn’t it a __lot__ more powerful than a 286? 32 bit dual core at 133 MHz - roughly a Pentium say? Plus some of the early 8 bit machines drove a display with mi
by klelatti 5y ago
Isn’t it a __lot__ more powerful than a 286? 32 bit dual core at 133 MHz - roughly a Pentium say?
Plus some of the early 8 bit machines drove a display with minimal extra hardware - eg the ZX80 / ZX81 although it was very very slow as a result!
- ChuckMcM 5y agoIn terms of instructions per clock and I/O bandwidth it compares more favorably to 16 bit architectures than 32 bit ones even though the Cortex-M family is nominally 32 bits.
- klelatti 5y agoI think memory bandwidth is key and I don’t know how the RP2040 stacks up but even 486 wasn’t superscalar and maxed out at 66MHz by comparison.
- happycube 5y agoRP2040 is designed to provide full bandwidth to both cores at once without bandwidth contention. Combined with the PIO's you can do some really impressive bitbanging.
- klelatti 5y agoThanks - that’s good to know. Must be into at least 486 territory then - with the exception of floating point.