Subject: Re: User-visible kernel change
To: Charles Hannum <>
From: Chris G. Demetriou <cgd@nobozo.CS.Berkeley.EDU>
List: current-users
Date: 12/16/1993 23:19:56
> Some of you will notice that the kernel no longer reports the same amount
> of memory you think you have installed in your machine.  It now reports
> the amount of conventional + extended memory that the NVRAM reports as
> actually being usable.  On some machines, the part that coincides with the
> I/O `hole' is mapped above the normal memory in hardware, and thus will
> still be visible; on other machines it is not and it won't.

an addendum to this:

if your motherboard does this mapping, and you've got 16M of RAM
on an ISA motherboard or on an EISA motherboard with an ISA disk
controller, strange DMA problems might result...

*sigh*  "standard hardware" my ass...  8-)