Interesting topic - Slow/Fast commands

[PokeMon]

I found this quite interesting and reminded me of my college days when the Pentium 386 was very popular. I remember some intel machines in that era had a "turbo" button.

The very first IBM PC (XT) had a clock frequency of 4.77 MHz.
Than later, the AT machines got faster (12 MHz or 16 MHz) and this way it was hard to play games created for IBM XT. So you could benefit from faster machine without loosing it's ability to play games with. Later games were not bound to a specific frequency so turbo setting off became useless over the time and this feature was deprecated for later machines.

[1024MAK]

Aye, but on some later systems, the button was still present on the case, just not used for anything. So on one computer I owned, I used it to control the fan speed - on for full speed, off for three-quarter speed

Mark