Chips that changed the world

Andrew Burton aliensrcooluk at yahoo.co.uk
Sat May 2 14:44:55 CDT 2009



Ahhh, I see. Thanks for clearing that up.


Regards,
Andrew B
aliensrcooluk at yahoo.co.uk


--- On Sat, 2/5/09, Tony Duell <ard at p850ug1.demon.co.uk> wrote:

> From: Tony Duell <ard at p850ug1.demon.co.uk>
> Subject: Re: Chips that changed the world
> To: cctalk at classiccmp.org
> Date: Saturday, 2 May, 2009, 6:36 PM
> > 
> > 
> > Thanks for the link, that was a very interesting read.
> > However, isn't there a mistake in the Motorola
> 68000 description. Doesn't i=
> > t use 32-bit addressing and not 24-bit?
> 
> The addres _registers_ were 32 bits wide, but only 24
> address lines were 
> brought off-chip. There are actually 23 address pins
> (A1...A23), becuase 
> A0 is determined from the states of UDS/ and LDS/ 
> 
> -tony


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