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None A strange problem 

Forum: PCMCIA Installation and Configuration Issues
Re: Sad "Bad address mapping" on Sony N505VE (toby cabot)
Date: 2000, Jun 19
From: David Hinds <>

I don't understand how something like this could develop all of a
sudden.  Does it matter if you cold boot linux, versus warm booting
from windows?  If the reported bridge mapping address is 0x000000dc,
that would certainly be a problem; the BIOS is supposed to fill this
in, and it is putting it in space used by your system RAM.

The pcmcia_core module has a parameter, cb_mem_base, that lets you
override the bridge address selected by the BIOS.  You could try using
that as a workaround, assuming this isn't just a symptom of something
more serious.  My first guess was "hardware failure" until you said it
still works under Windows.

-- Dave

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Sad you're not kidding

Re: None A strange problem (David Hinds)
Date: 2000, Jun 20
From: toby cabot toby


It sure is a strange problem. I can't for the life of me figure out what changed between "working fine" for the last five months since the machine was new and "FUBAR" now. I've tried warm-booting from Windows, cold boot, remove battery and power then re-boot, and nothing seems to work (except for win98, which works fine, which really pisses me off).

I scanned my messages log and found that the bridge mapping used to be 0x68000000 when things were working. So I tried setting the cb_mem_base to 0x68000000 but then get "Bad bridge mapping at 0x680000dc!".

I've also tried kernel 2.2.16 with pcmcia-cs 3.1.16 with the same results.

I looked for BIOS upgrades on the Sony website and no luck.

I guess I could try a pre-2.4 kernel but I'm not usually that cutting-edge.


1. None Maybe a very particular hardware fault by David Hinds, 2000, Jun 20
... 1 Message(s)
A strange problem

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