In ZSNES you could program a button to act as "turbo B" or "turbo A" and holding it down would press B or A respectively up and down very quickly.<br><br>It's a handy way to powergame.

In the 80s and 90s, some desktop PCs included a "Turbo" button, but what it actually did was a little unclear. What was it for and why don't PCs have them now?

Back in the 486 days, it was common to see a “Turbo” button on the front panel of many PCs, which was used to toggle between the CPU’s maximum speed and a slower clock rate that w… ...