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- Mother board with para port.
February 24, 2016, 10:27 pm
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Re: Mother board with para port.
That style of design, terminates on the SuperI/O.
The brand of chip could be Nuvoton, but I can't
make out the part number.
If I take a SuperI/O from my datasheet collection,
this is what it says for that style of port.
I don't know how to figure out the I/O address
for that thing. The chip is on the LPC bus, and
I don't know how an I/O instruction maps to the
LPC bus. How the transaction gets directed to
the right place.
Wikipedia has this to say about LPT
* Logical parallel port 1: I/O port 0x3BC,
IRQ 7 (usually in monochrome graphics adapters)
* Logical parallel port 2: I/O port 0x378,
IRQ 7 (dedicated IO cards or using a controller built into the mainboard)
* Logical parallel port 3: I/O port 0x278,
IRQ 5 (dedicated IO cards or using a controller built into the mainboard)
My two powered computers at the moment, don't
have parallel ports on the motherboard. So I don't
immediately have access to a sample to give
a number on a board that still has the port.
I can tell you though, I have a PCI Express parallel
port, and both the I/O address is wrong, as well
as the port not being recognized by VPC2007 (virtual
machine software) as a port that can be passed thru
to a VM. So while I have a piece of software that
will work with my LPT3 on this board, not every
piece of software is as forgiving about the
Your motherboard on the other hand, should be OK.
It should be "dongle material" :-)
Nobody wastes a PCI or PCI Express parallel port chip
on a design that needs other SuperI/O stuff anyway.
While it's getting harder to buy old-fashioned SuperI/O
chips, these motherboard companies buy those by the million,
and getting 10,000 to build a batch of your motherboard,
probably isn't a problem for them.