Date: Thu, 1 Aug 1996 11:28:23 -0600 (MDT) From: Nate Williams <nate@mt.sri.com> To: Nate Williams <nate@mt.sri.com> Cc: Thomas Graichen <graichen@axp5.physik.fu-berlin.de>, hackers@freebsd.org Subject: Re: tcp/ip over lp0 Message-ID: <199608011728.LAA07275@rocky.mt.sri.com> In-Reply-To: <199608011723.LAA07242@rocky.mt.sri.com> References: <199607312120.PAA03869@rocky.mt.sri.com> <199608011615.SAA01210@mordillo> <199608011723.LAA07242@rocky.mt.sri.com>
next in thread | previous in thread | raw e-mail | index | archive | help
Nate Williams writes: [ Argh, I hit send before I meant to. Sorry ] > > That's a *really* long cable. Also, *MAKE SURE* that neither machine > > has another device using it's interrupt, and that there is a driver for > > all hardware that generate interrupts. > > > > If you happen to use the commonly-used IRQ 7 for the parallel port and > > something other than the parallel port either generates interrupts on 7 > > or one another unregistered port you'll have lots of problems. > > > > Make sure both machines have don't have IRQ conflicts and shorten the > > cable. > > > > i tried another shorter cable and it's the same - so it must be the > controller - can some bios settings or things like AUTO_EOI* or > DUMMY_NOOPS have any influence ? The BIOS settings could affect it, but I doubt the kernel setting would. > - as far as i'm aware of all interrupts are correct set (ok i > think nearly all are used - serial: 3,4,9(2), parallel: 7, ethernet: 5, > sound: 11, ide controllers: 14,15 - should'nt i get something like stray > interrups if something is wrong ? will this help you ? The parallel controller would 'swallow' them, so you wouldn't see them, except that lpt0 wouldn't work very well. :( > graichen@mordillo:~> vmstat -i > interrupt total rate > clk0 irq0 212749 99 > rtc0 irq8 272238 127 > fdc0 irq6 1 0 > wdc0 irq14 20300 9 > mcd0 irq10 1 0 > vt0 irq1 9619 4 > sio0 irq4 6251 2 > sio3 irq9 53109 24 > ed0 irq5 1 0 > Total 574269 269 > > there's no irq 7 to see - but i haven't used it until the vmstat - > does the lptcontrol -p/-i affect the lp0 device too or is it always > using the interrupt version ? It affects it. Also, I'm not sure the lpt0 device actually registers the interrupts. :( > do you have any idea ? - i'll try to experiment further. I still think it's a misconfigured IRQ and/or a parallel port that's not setup correctly. (In the BIOS see if you can set it to 'extended' or some other setting). Nate
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199608011728.LAA07275>