RP2350 support

[c1570]

Just as a pointer for anyone interested:
https://github.com/c1570/rp2040js features some RP2350 support (RISC-V only).

[urish]

Great! What's the end goal?

[c1570]

I'm mostly using it for https://github.com/c1570/Connomore64 and it's running that already so not sure.

I'll probably implement interrupts (because most normal projects need those) and GPIO/PIO changes (those additional GPIOs are interesting in the context of other retro tinkering). Supporting MicroPython would also be nice.

Of course it would also be interesting to get this into Wokwi but that's probably a long way to go...

[urish]

Awesome, thanks for sharing!

I think GPIO / PIO changes would be great. How long did it take to get it to the stage where you were able to simulate Connomore64?

[c1570]

Difficult to say, around 50 hours probably, including looking at RISC-V for the first time.

Interrupts are there now but need some debugging. Xh3irq is a nifty feature but a bit complex.

Also, I merged most of the recent rp2040js changes apart from reformatting/ESM/tsx changes.
For rp2350js, tsx is much slower than ts-node for some reason (tsx runs is at only about 30% of ts-node's speed even though initial startup is much faster with tsx).

[urish]

That's surprising, at the end of the day, both are just removing the types. IIRC, in recent node versions (22?) you can just use --experimental-strip-types to directly run TypeScript code, without any extra "helpers"