Ports in a Virtual Machine

June 26, 2010 at 06:59:11
Specs: DOS
I hope this is the right forum.. couldn't find a specific one for virtual machine stuff.

I was wondering, just generally, if it is possible for a guest OS to use the host machine's ports -- even ports added to the host via PCI cards.

I have a machine with two parallel printer ports.. one on-board, one via PCI card.

Just wondering if the guest OS can use both, or is that beyond the capability of virtual machines?

Yes I know I could experiment with it and I plan to, but I was looking for some general insight about it first.


640K is plenty.

See More: Ports in a Virtual Machine

June 26, 2010 at 08:10:00
Aside from the CPU the client OS knows nothing of the physical hardware of the host. The client sees only the emulated hardware provided for it. The number of ports seen by the client will be determined by the virtual machine. Check your virtual machines setting to see what is available.

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June 26, 2010 at 11:33:12
Yeah, I figure there's some kind of "mapping" that goes on before the client OS is turned-on... not sure.

I'm having a hard time getting my head around the whole VM thing.. I'm an old skooler I guess.

640K is plenty.

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June 26, 2010 at 15:43:16
VM's can attach their virtual ports to your physical ports. The vm can act just as if the physical port was connected to the vm.

See documentation.

I support the 'Everybody Draw Mohammed Day'. A religion doesn't deny my freedom.

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