== Known Hardware ==
The Soft Reset feature is useful (initialize hardware expansions), but no used a lot, ; the [[PlayCity]] and , [[Nova]] and [[CPCISA by Yarek|CPCISA]] are the only hardware expansion using intentionally this feature (though when reverse engineering things by only examining the software drivers one may easily miss its presence, since the OUT [F8FFh] is issued by the BIOS, not by the driver). Aside the [[PlayCity]], the other known hardware that is (maybe unintentionally) using Port F8FFh is [[CPCISA by Yarek]].
Moreover, there are probably various devices that do not directly use Port F8FFh, but that do react to the OUT because of incomplete port decoding. For example, the [[ACU Real Time Clock (DIY)]] decodes only A10,A4,A3 of its Port FBFFh, and so, it will also react to OUT [F8FFh],FFh.