Disabling IO probing is a bad idea 

Forum: PCMCIA Installation and Configuration Issues
Re: Question: Machine Reboots on high volume network traffic (Jason M. Sullivan)
Date: 1999, Nov 29
From: David Hinds <dhinds@pcmcia.sourceforge.org>

> So I got the PCMCIA package and cardmgr running (I needed to turn off IO > probing. Disabling IO port probing is a very bad idea unless you're very sure about what you're doing. My guess is that you've now got an IO port conflict, which is causing reads and writes to the card to sometimes have unexpected results. Rather than disabling the IO probe, it would be much better to play with the IO port windows in /etc/pcmcia/config.opts to find a setting that doesn't cause a freeze. -- Dave

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More: Working now, but one last question Re: Disabling IO probing is a bad idea (David Hinds) Date: 1999, Nov 30 From: Jason M. Sullivan Jason0x21

Ok, I got the card working with a minimal amount of frittering around, but one question remains. The port scan picked up a port that seemed to work (or worked much better than the previous ones), but my memory map lists that as in use by MIDI. I suppose I need to check and see if I can play a MIDI tune while accssing the nextwork, but the question is this: How does the port actually get asigned? Does it just look for a "free" port?, and tell the card where to respond? If that's the case, I'm guessing I should probably exclude the MIDI port? Thanks!

Clean resource allocation is hard Re: More: Working now, but one last question (Jason M. Sullivan) Date: 1999, Nov 30 From: David Hinds <dhinds@pcmcia.sourceforge.org>

The drivers try to avoid clashes with known devices, but the Linux kernel currently does not make this particularly easy. If you have a fairly recent PCMCIA package and compile it with PnP BIOS support enabled, it will generally do a better job of this, because the BIOS may know more about the resources used by your devices than the Linux kernel. However, PnP BIOS calls cause problems on some systems, so I don't enable this by default. You should exclude the MIDI ports if the PCMCIA drivers are trying to reuse them. -- Dave

More: Time for me to talk to TI/Acer Re: Clean resource allocation is hard (David Hinds) Date: 1999, Nov 30 From: Jason M. Sullivan Jason0x21

Thanks for the info. I did more checking on the websites that TI/Acer have for the TravelMate series, and in their doumentation for setting up a PCMCIA ethernet card, they say to use the very port that the linux pcmcia package is picking, so it looks like there's a conflict in their documentation as well. :-) Looks like I'm gonna be bugging Acer now. Thanks again!

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