Standard serial/parallel ports for new PC

ron ronjscott-rieW9WUcm8FFJ04o6PK0Fg at public.gmane.org
Mon Jan 21 06:07:21 UTC 2008


Kevin Cozens wrote:

> Greetings.
>
> The one thing my new computer (HP computer with Core 2 Duo processor) 
> doesn't have is either a serial or parallel port. I know there are USB 
> adapters to provide these types of ports but they aren't useful to me. 
> I have some programs which require being able to do bit-bashing on the 
> ports. I also want to do use the parallel port for interfacing with 
> some electronic circuits, and I can use it with my old laser printer.
>
> I would like to get a single board that has a 9-pin serial port 
> compatible with a standard 8250/16450/16550 chip, and a 25-pin 
> parallel port compatible with a standard 8255 chip, and that use 
> standard IRQ's for each of the serial and parallel ports on the board.
>
> The boards I have found are a in the $60 to close to $100 but seem to 
> share a single IRQ. Since they do that, I would question their 
> compatability with the ports found on older computers. Anyone happen 
> to know of a source for such a board? If I can't get both ports on one 
> board, I could go with just a parallel port board for now.
>
> The board(s) need to be Linux compatible. A board that would work but 
> comes with some custom Windows driver isn't likely to be useful. The 
> alternative would be to make one myself but that is likely to be a 
> hassle to interface with the PCI bus used in the current day machines.
>
You may want to check out the products on www.lavalink.com. They have 
combo boards as well as parallel and serial boards. They state under 
Operating Systems - Linux 2.4+. The company is located in Toronto. No, I 
don't work for them; don't sell them.

Ron
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