Changes

Peripheral Soft Reset

75 bytes removed, 08:26, 10 September 2022
== Known Hardware ==
The Soft Reset feature is useful (initialize hardware expansions), but no used a lot, ; the [[PlayCity]] is , [[Nova]] and [[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.
* [[Media:S158ap12.pdf|SOFT 158 Appendix 12 (XII) (The Hardware)]] - general info on Port F8FFh (page 3)
* [[Media:S968ap13.pdf|SOFT 968 Appendix 13 (XIII) (Hints Tips and Workarounds)]] - info on Port F8FFh and interrupts (page 7)
 
[[Category:Hardware]]
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