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None The card decodes 10 bits, the bridge decodes 16 bits 

Forum: PCMCIA SCSI Host Adapter Issues
Re: Question Panasonic KXL-783A: Let's try this again... (Mike Bilow)
Re: None It should actually work (David Hinds)
Re: None Not quite what I meant... (Mike Bilow)
Date: 2000, Mar 28
From: David Hinds <dhinds@pcmcia.sourceforge.org>

The card itself decodes 10 bits of address space.  The PCMCIA bridge
decodes all 16 bits, so the card will never see accesses to aliases
like 0x250-0x25f if the bridge was configured for 0xa50-0xa5f.

If your power management device is particularly goofy and only decodes
10 bits of address, then yes, you would need to also exclude all
aliases of 0x250-0x25f.

There is no interface for directly forcing the IO port range for a
card.  I decided to not provide such an option because it should never
be needed and I expected it to be generally misused.

I'm not sure if it is a good idea to assume that your kernel has SCSI
CD-ROM support built in.  At least, check your /lib/modules/*/scsi
directory to see if there is an sr_mod module.  If so, try loading
that before inserting your card.

-- Dave

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