[lug] sportster modem questions/problems

[Stephen Coffin]

>> Sounds like a IRQ or IO conflict.
>>    com1 = irq4 
>>    com2 = irq3
>>    com3 = irq4
>>    com4 = irq3
>>    soundcard often on irq5
>> Do you have some other device taking irq 2/9?  
>> 
>> I would disable both ttys on the mother board, remove all cards but the
>> video and see if it works on com3 under Linux. (some devices can share IRQs
>> under DOS but not under Linux).

As far as I know (cat /proc/interrupts :-), no devices are using
int 2/9 or 5.  My sound card is on irq 7.

>> If it works, just add things back one at a time until it stops. Also I have

I was hoping for some wisdom from this group; dis-assembling my machine
doesn't seem too hopeful either, unless I get some knowledge :-)

>> had problems with PCI devices trying to use the same IRQ as ISA devices
>> causing some strangeness.  I would disable PnP management of the IRQ you
>> select, 2/9,5,3 or 4
>> (in the BIOS/CMOS).

no pnp support on this PPro motherboard.

>> Do you still need to do some 'setserial' magic if you're using IRQs
>> other than 4 and 3 for a serial port?  I seem to recall, when I
>> had a Sportster internal on IRQ 5, having to change one of the init
>> scripts to specifically set that IRQ on ttyS2.

yes, I used setserial to select the irq at boot time (and set some
jumper on the sportster for com3 and irq).  No joy, hangs either
with or without the setserial.

Thanks for any comments.  IMHO, modem and serial port support still
seems to be somewhat rudimentary in linux.  It should be a lot
easier than this to do something just slightly unusual.

ps= And I still have not solved the "reset" or "hung modem" problem.
Why is minicom the only program that will open the port/modem
after a call is made and hung up cleanly?

and stay with my old external modem

				=S.Coffin
				GV Computing
				scoffin at netcom.com