[Linux-parport] True Parallel Port Interface for Bit-banging?

Maciej S. Szmigiero mail at maciej.szmigiero.name
Mon Nov 7 15:53:24 PST 2016

On 07.11.2016 13:44, Sebastian Frias wrote:
> On 10/29/2016 01:12 AM, Maciej S. Szmigiero wrote:
>>> Would you mind sharing the laptop's model?
>> This is Elitebook model 8570p.
> That seems like a fairly recent laptop:
> http://www.notebookcheck.net/Review-HP-EliteBook-8570p-B6Q03EA-ABD-Notebook.82291.0.html
> and it has a true parallel port?

It has parallel port on address 0x378/0x778, IRQ 5 by default which is
realized by Super IO chip.

In PnP config also available for selection are addresses 0x278/0x678,
0x3bc/0x7bc, IRQ 7 and ISA DMA channels 1 and 3.

Although I have never used this port personally it looks like what can
be considered a "true" parallel port.

> Thanks a lot for the pointer!

You are welcome.


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