Re: BCC, ELKS 24 Bit addressing mode

[Dan Olson <dano@agora.rdrop.com>]

True, I undesrstand, I just thought that the extra banking logic needed 
and the software overhead might negate that added integration, but I'm not 
sure what your goal is in the project.  I've got some 186 CPUs sitting 
around if you have any need for a couple.

 	Dan


On Fri, 24 Mar 2006, Jody wrote:

> 186 CPUs have various non-CPU functionality integrated into the chip itself, 
> which is one reason it's popular in some embedded designs.
>
> Dan Olson wrote:
>>>> Basically you're working with a 286 that's been lobotmized down to a 186 
>>>> with the addressing features in place?
>>>> 
>>>> 
>>> yes, but I need to address 16 Mbytes of RAM so I need to use 24 bit 
>>> addressing mode.
>> 
>> 
>> I hate to ask, but why bother with a 186 in the first place?  As I 
>> understand it, the only real difference (other than some hardware 
>> integration) between the two is that the 286 has a 24 bit address 
>> space....which you'd need if you're going to use 16M of RAM anyway.
>> 
>>     Dan
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