Does dosbox support LPT soundcards in stereo?
I found information that stereo LPT sounds was done in 2 ways:
a) two LPT ports with two connected DSS
b) one LPT with one DSS. The left/right channel switching is done via signaling on pin #1 of LPT port - the STROBE signal.
I can't answer the dosbox support question, but wanted to calrify a few things: The stereo LPT DAC stuff was usually a "stereo-on-1" circuit that you built yourself. Neither the Covox Speech Thing nor the Disney Sound Source support stereo.
The MSound Stereo LPT DAC *did* support stereo but I don't have any programming documentation for it. It was some sort of reprogrammable D/A that could do mono, stereo, even quad I think. I have a unit in my basement, but all I've ever been able to do with it was use a small program to reprogram it to work like a Speech Thing (which it does very well). The only game I know of that has "native" support for the MSound was Links.
This initial question sounds familiar. A number of DOS era demos used fairly simple circuits that you could build yourself for stereo sound via LPT. Some of them don't like the emulated Sound Blaster, or even a genuine SB16, and for any kind of decent sound, they rely on these circuits you can build yourself. It would be nice to see support for these D/A circuits added to DOSBox.
I found a scematic for these circuits in the documentation for a demo. Screenshots are attatched. Both are from the same document.
