For a sleepy minute there I thought you meant because you were driving and wanted to play donkey.bas while commuting in a self driving car

spacebar works (it's the only key needed).

The "any" key also works, as well as the onscreen keys (e.g. F1)

It's not surprising that this simulation of a 36 year old 4.77Mhz desktop runs fine in javascript on my 1.3GHz quadcore $40 phone... but in a way, it is.

This makes me wonder how accurate the timing is. I've been looking at the Gameboy Link Cable, which seems to need very low latency. Are we there yet, in the browser?

It doesn't necessarily need accurate timing under emulation. The emulator is god: it can play with time as it likes.

More interesting to me is to connect a real Gameboy to an emulator, probably with the BGB protocol - http://bgb.bircd.org/bgblink.html

In the browser, I expect we are (like having two emulator instances in a single web page). Emulating a link cable via web sockets, now that gets interesting...

There are a couple of gameboy emulators that can communicate over a TCP connection, I imagine doing the same with Websockets would be fairly trivial.

Use d and h for left and right worked for me.

You only need one key. Any one except Esc will do.

Try the letters l and r.

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