6809 SBC (was Editor religious wars (was Re: Museums))

[Dave McGuire]

On Feb 1, 2010, at 2:57 AM, Alexander Schreiber wrote:
>> As for total memory available to use for temporary
>> work space, when I run Ersatz-11 under WXP on a
>> system with 4 GB of physical memory (I agree that
>> WXP wastes almost 1 GB of that memory),
>
> Not the fault of Windows. For a 32 bit PC system with 4 GB of
> RAM, up to 1 GB of RAM is 'lost' because up to 1 GB of
> the address space is used for the PCI address space (i.e.
> memory mapped access to peripherals[0]). It can be quite bit
> less (such as 500 MB), or up to the full 1 GB - that depends
> on the specific hardware.

   The MMU can easily get around this.  And indeed, I don't have this  
problem with any other OS.  Does Windows not understand PAE hardware?

              -Dave
>


-- 
Dave McGuire
Port Charlotte, FL