Robert Barker <firstname.lastname@example.org> wrote in message
COM3 with an address of 03E8h, irq 4? Huh… I believe my hardware is
it works perfectly with Windows. This is getting somewhat weird. Any
on the Qtalk thing? Or does it need to be in ‘local echo mode’?
Are you telling me that that is where your modem is? or asking where mine
Mine is indeed at 03E8, irq 4 and also works just fine under Windows 98 SE
I am not claiming that anything is wrong with your hardware, my drift is
that maybe you have to have a single instance of devc-ser8250 controlling
both /dev/ser1 and /dev/ser3
(Maybe you are already doing that?)
Mine also works just fine with QNX6 under the following scenario:
- I “slay” the running devc-ser8250 which only detected the first 2 serial
- I start a new devc-ser8250 to run all three serial ports - giving the
addresses and interrupts on the command line
I am positive that ser1 and ser3 share the same interrupt - irq 4
I believe (though I am not absolutely sure) that - unless a single instance
of devc-ser8250 is running both ports that share the interrupt - the fact
that there are two different serial ports with the same interrupt can and
might screw up your communications.
This is, however, only one thought about what might be wrong.
There are others. (Believe me, I have debugged enough modem and serial
problems on QNX2, and QNX4 to last me a long, long while!)
Your subsequent post (to the one I am replying to) seems to indicate that
qtalk (and by implication, the driver) is not seeing any received data.
The “local echo” is an echo to the screen of the data sent to the serial
If you were getting data back on the receive side, you would see your
characters “doubled” as in AATTZZ
Is is also possible to configure the modem to not echo command characters
(the norm is to echo them), and this might also be a potential source of
The command “ATE1” to the modem turns command echo on, and “ATE0” turns it
Also, maybe (under qtalk) try an “ATI4” and see what information comes
back - is there any??
The problem might also be flow-control.
But, just maybe, because of shared interrupts, the driver is not seeing the
interrupt to tell it that a received character is available to be read?
Steve Munnings, Corman Technologies <> email@example.com> > wrote in
news:99q9ie$gmh$> firstname.lastname@example.org> …
I have this exact same modem on my system at home (running QNX6 also)
It is COM3: on my Windows system. This means that it shares the
with COM1 (builtin to the motherboard)
When I slay and restart devc-ser8250, I set it up for all 3 of my serial
I believe that in order to properly share serial interrupts like this at
least 2 things have to be true…
a. The hardware supports this - i.e. the motherboard is designed so that
on-board port AND the ISA-based port can both trigger the interrupt
without causing hardware interference with each other (as I understand
it is impossible to do this with two seperate ISA-based cards because of
design of the ISA bus interrupt lines (active high) )
b. (I am guessing here) A single instance of devc-8250 should be running
both ports that share the interrupt.
BTW. My modem works just fine, and has ever since the initial version
QNX6 distributed at the QNX2000 conference last year…
Robert Barker <> email@example.com> > wrote in message
news:99q3q5$d5n$> firstname.lastname@example.org> …
I’m afraid that its not a PNP modem. Also, could someone tell me how
exactly Qtalk works? Unless I put it into ‘local echo’ mode (or
nothing I type appears in the terminal.
Hardware Support Account <> email@example.com> > wrote in message
news:99njvd$arp$> firstname.lastname@example.org> …
Is the modem a plug and play modem? If so turn off plug and play OS
Robert Barker <> email@example.com> > wrote:
My AOpen FM/ITU-2 (ISA hardware-modem) isn’t workin’ for me.
devc-ser8250 and set it to recognize my modem, but I keep getting
message ‘connection failed’ from phdial. Qtalk hasn’t been much
tell it which port to use, etc. but nothing appears in the
type, and so I have no idea how my modem is responding.
Any help would be greatly appreciated.