> I like the Raspberry Pi RP2040 a lot. It's relatively cheap (around $1 USD) and has tons of on-board RAM - 264 KB in fact! It also has what is called Programmable IO, or PIO.
I wonder how benchmarks would compare between the RP2040 and, say, a Z80.
burnte•25m ago
It would destroy the Z80. It's a 32bit, dual core CPU running at 133MHz. Even single cored it'll thrash a Z80. Heck, I bet you could create a drop-in replacement board for the Z80 using an RP2040.
ge96•22m ago
Crazy what you can buy nowadays like the Teensy 4.0 with 600MHz base clock
Granted that's $20 not $1
fortran77•6m ago
The key here is the "PIO" which you won't find on a Teensy. It lets you do extreme "bit banging" tricks including generating video. People have even implemented Ethernet on it. I've used it for some custom serial protocols ("Weigand") used by alarm panels.
zahlman•41m ago
I wonder how benchmarks would compare between the RP2040 and, say, a Z80.
burnte•25m ago
ge96•22m ago
Granted that's $20 not $1
fortran77•6m ago