Paranoid hardware [PART XVII]

Any desktops/laptops/motherboards/SoCs that do not require closed-source firmware blobs out there?

>>1
You could make your own out of Microchip PICs, downside being that it will be about as fast as a 286.  I'm not sure they have the required clock rate to drive a modern RAM stick, though.  I'm not sure what it would take to get video output out of them, though.

>>20
Interesting idea, maybe one could make a Lisp machine like that.

the nes dose not requir firmware 2 run

>>195
I'm pretty sure the Arduino is faster than a NES, and that's saying a lot.

>>196
Putting aside that ``the Arduino'' isn't a thing, you can't meaningfully compare different processor architectures like that.

>>197
Yes, you're right, I just meant from a general-purpose-computation point of view.

I read about people connecting their AVRs to DRAM chips but apparently the manual refresh takes up about 10% CPU power.  Maybe I could use a second AVR to do that?  Maybe I could use the second AVR as a system bus and memory cache as well.  Although 8 KiB isn't a lot.  Also, I'm not sure about the extra latency involved in memory accesses.