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How many parallel and serial port can I use in DOS ? (Developers)

posted by Damien(R), 06.01.2013, 16:05


I've been wondering how many parallel ports I can use in my Dos programs. I mean, considering the fact that I have many PCI slots with many "add parallel port card".

I have seen several times the number of 3 or 4 ports, but I'm not sure of this.
And What is the nature of this limitation? Is the the same for all x86-based PCs? Does it depend on the hardware, the bios, the operating system ?

In other way, have you ever managed to use 4 parallel ports at the same time ?

And of course, same question about serial ports... is there a limitation of 4 ports? Or can we go further with more serial PCI cards ?



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