Chips that changed the world

Tony Duell ard at p850ug1.demon.co.uk
Sat May 2 12:36:05 CDT 2009


> 
> 
> 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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