On: Building a vacuum tube computer

[PaulHoule]

RISC-V has pretty big registers and a lot of them, so you will need more tubes than you otherwise might...

[NikkiA → PaulHoule]

I'd probably say a 6800/6805 is about the right complexity for doing in tubes and not breaking the bank

[Taniwha → PaulHoule]

there's an embedded subset with half the number of registers

[monocasa → Taniwha]

That's still huge for the technology. The tube machines were in the order of a hundred or so gates, an RV32E is around 10k-15k.

[Taniwha → Taniwha]

(and people have talked about doing 16-bit subsets)