Messages in this thread | | | Date | Fri, 11 Jun 1999 21:12:33 -0700 | From | Mark Jefferys <> | Subject | Re: holes for ISA boards... |
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On Sat, Jun 12, 1999 at 03:07:34AM +0200, Hirling Endre wrote: % On Fri, 11 Jun 1999, Aaron J. Grier wrote: % % > Any idea what's going on? Is it impossible for me to poke a hole in memory % > from 12-16MB so I can hack on this silly ISA board? % % Your patch creates a hole in Linux's virtual address space, but your % card needs a hole in the physical RAM, or it will conflict with chips % in that range. I think there's no way to do this with a machine that % has more than 12M of RAM.
Some BIOSes have the capability of creating a hole within memory just for supporting legacy ISA cards. My FIC PA-2013 has such an option, although only for 14-16M or 15-16M hole.
% But then again, you have Linux, an OS that runs fine with even 12M of % RAM :)
In fact, I activated the memory hole feature when setting up my machine and ended up with Linux detecting only 14M. It took me a few days to notice that I was running on vapors...
Which makes me wonder why Linux doesn't support this situation, and where I could find info that would let me fix it.
Mark
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