You can't. The devices you mention are specifically handled within DOSBox as part of the emulation.

There exists some un-official versions of DOSBox that only works in Windows, or only works in Linux, that provide direct access to some of the real hardware from DOSBox. But where to find them I don't know.

Search, search and search again, and you might find them somewhere. But I very much doubt that any of these versions (builds) will give you access to that ISA card.

Of course, if you have a lot of money, I am sure you could bribe one of the developers to create a version that will do what you want.

It seems like Port IO would be possible with dosbox, or at least a simple addition. There are so many IO ports exposed for soundblaster, midi, game controllers, serial/parallel ports, etc.

Is there no way to (for example) set up a fake midi device for 0x240 and use my ISA card instead? It's just a simple Digital I/O card with no IRQ/DMA so it'd be a shame if it couldn't work.

Thanks for your help!

not a shame. but a clear choice.

I don't understand, can you explain?

dosbox is not intended for this. And there are NO ports exposed at all.

DOSBox is about one thing only:

Re: DOS 5.0

Supporting obscure hardware, printers, etc are not something you are likely to see.

wd wrote:

dosbox is not intended for this. And there are NO ports exposed at all.

I thought there were ports exposed for the soundblaster, midi, serial/paraller ports, game controler, etc. I apologize if I misunderstood.

MiniMax wrote:

Supporting obscure hardware, printers, etc are not something you are likely to see.

I thought port I/O was more of a feature (something even available in the limp XP DOS) not obscure. Certainly it would be a nice addition if it wasn't too difficult.

soundblaster and such are pure emulated ports. They have no connections with your real io ports.
Regardless whether it is nice or difficult, it is useless for DOS games.