Hi
I'm seeing some demos and games which read port 1F. For example "Uwol - Quest for Money" (and all conversions from mojon twins), xonix, alteregobeta, and some others.
If I return the usual value FF on my ZEsarUX emulator (or floating ula value), these games seem to read some key? xonix for example, the sprite is always moving to the right. on uwol, seems to read a key so the menus doesn't wait a keypress...
If I return a 0 value for this port, these games work...
So, I have found references to port 1F for betadisk ports and also "power of sound turbo-AY (bit 0 of port #1F)". But doesn't seem to be related with keyboard...
Anyone knows why these demos are reading port 1F?
Thanks