by Yidao Ca » Sun, 31 Dec 1899 09:00:00
I have only one parallel port, is there any problem switching them back
and forth? I used "alias parport_lowlevel parport_pc" in conf.modules to
get the
printer recognized, will connecting the superdisk disable the printer
even after I switch it back?
cai
--
by Ronald J R » Sun, 31 Dec 1899 09:00:00
>--------------E4E9D8EFD25933D29891DAFF
>Content-Type: text/plain; charset=gb2312
>Content-Transfer-Encoding: base64
>I have only one parallel port, is there any problem switching them back
>and forth? I used "alias parport_lowlevel parport_pc" in conf.modules to
>get the
>printer recognized, will connecting the superdisk disable the printer
>even after I switch it back?
>cai
>--
>--------------E4E9D8EFD25933D29891DAFF
>Content-Type: text/html; charset=gb2312
>Content-Transfer-Encoding: 7bit
><!doctype html public "-//w3c//dtd html 4.0 transitional//en">
><html>
>I have only one parallel port, is there any problem switching them back
>and forth? I used "alias parport_lowlevel parport_pc" in conf.modules to
>get the
><br>printer recognized, will connecting the superdisk disable the printer
>even after I switch it back?
><p>cai
><pre>--
> </html>
>--------------E4E9D8EFD25933D29891DAFF--
by Uwe Malza » Sun, 31 Dec 1899 09:00:00
>>--------------E4E9D8EFD25933D29891DAFF
>>Content-Type: text/plain; charset=gb2312
>>Content-Transfer-Encoding: base64
>>I have only one parallel port, is there any problem switching them back
>>and forth? I used "alias parport_lowlevel parport_pc" in conf.modules to
>>get the
>>printer recognized, will connecting the superdisk disable the printer
>>even after I switch it back?
>>cai
> I have the same setup and it works fine for me as long as i do a
> rmmod pf
> rmmod epat
> rmmod paride
> before running the printer.
Cheers
Uwe
1. Multiple parallel ports/IRQ sharing/non-use of IRQ by parallel ports?
Hello,
I currently have two parallel ports in my PC (one at address 0x3bc and
one at 0x378) and was wondering if it is possible to use them simultaneously
_without_ using more than one interrupt. I've read that in DOS, most printing
is not interrupt-driven, but instead is accomplished by polling. Having read
the Printing-HOWTO, I have learned that it is possible (under Linux) to toggle
between an interrupt driver and a polling driver for each parallel port
(/dev/lp0, /dev/lp1) using a utility called "tunelp". I was wondering if any
of the following configurations are possible for simultaneous use of the two
parallel ports:
1) Have both ports share IRQ7.
2) Have both ports run with the polling driver (using no interrupts).
3) Have one port using IRQ7 and the other port running with the polling driver.
I know that I can set the two parallel ports up using separate interrupts, but
the card with the second parallel port only allows use of IRQ7 or IRQ5 (it's
an 8-bit I/O card), and IRQ7 is already used by my first parallel port (it's
integrated onto the motherboard and its IRQ is not changeable) and IRQ5 is
being used by an old MIDI interface card (whose IRQ is also not changeable).
Any comments/suggestions are greatly appreciated!
-Alvin
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