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Old 10 July 2007, 14:42   #1
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Memory Addressing Architecture

Hiyas Forum Fiends (ahem i mean friends)

Okay I have been having a ponder (as Zetr0's do) and a query has entered my mind.

could anyone confirm or debunk this analysis.

CPU MAA (16bit - 24 bit and 32 bit)

The 68000 use a 16bit memory addressing structure?

The 020's & 030's use a 24bit memory adressing structure ?
*was there some that used 32bit ?*

The 040's and 060's use a full 32bit adressing structure?

I appreciate the help
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Old 10 July 2007, 15:14   #2
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Don't know what MAA means but besides that, all 68Ks have 32bit internal addresses.
The 68000 and 010 have 24 adress lines external and a 16bit data bus.
The 68ec020 have 24 address lines and a 32bit data bus and the 68020 and above have the complete 32 address lines.
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Old 10 July 2007, 16:55   #3
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thanks rgen, that clears up the confusion i was having

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