On Wed, 20 Mar 2002, Ken Rutledge wrote:
> > We have an instrument that uses bidirectional EPP under dos/windows.
> > We feel our lives would be simplified if we could replace the windows OS
> > with LINUX. Our instrument is a spectrophotometer, with DOS graphics.
> > Graphics launch when we try, but it seems the parallel port is not
> > interacting with the instrument.
> > Can anyone offer suggestions? Are we asking to much from DOSEMU? If not,
> > what guidance can you offer to get these units talking?
>
>
>
> Now clarifications:
>
> DOSemu version is 1.0.2.
>
> Linux version is Red Hat 7.2.
>
> We are running a DOS executable. We have no source code for controlling this
> instrument.
>
> The parallel port needs "SPP" not "bidirectional EPP" as I mentioned originally.
you could try running dosemu as root and putting the relevant port numbers
in $_ports in dosemu.conf
>From the dosemu-howto:
4.8. How can I get the parallel ports to work?
The dosemu.conf has lines at the end to redirect printers to either
lpr or a file. If you want direct access to the bare metal, comment
out these emulation lines, and add the line
$_ports { device /dev/lp0 fast range 0x3bc 0x3bf } # lpt0
for the "monitor card" printer port (corresponds to /dev/lp0), or
$_ports { device /dev/lp1 fast range 0x378 0x37f } # lpt1
or
$_ports { device /dev/lp1 fast range 0x278 0x27f } # lpt2
for LPT1 (/dev/lp1) or LPT2 (/dev/lp2) respectively(97/2/9).
Hans Lermen ([EMAIL PROTECTED]) writes:
But NOTE: these lines should not be _added_ simply, the string should
be concatenated such as:
$_ports = "...."
$_ports = $_ports, " device /dev/lp0 fast range 0x3bc 0x3bf"
=
This blank is important
Though this would not normally be a good idea security-wise, if it is a
stand-alone box it should not be a big deal.
If running dosemu as root you might need to copy
dosemu.conf to /etc/dosemu.conf
global.conf to /var/lib/dosemu/global.conf
Bart
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