Amiga.org
Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: bloodline on June 28, 2004, 04:25:53 PM
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Does anyone (Piru? :-D) know where to find programming info for the 68k MMUs? (or any MMUs for that matter!)
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Hey, your picture looks like Guybrush Threepwood with his pants
down... or is it someone else?
:-D :-D :-o
Does the standard A1200 motherboard '020 have a MMU? I understand it's
the 68EC020 so does this mean no MMU or no FPU - or neither?
Why did Amigas never implement parity or ECC like in Unix servers?
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www.motorola.com Product Library Search (http://e-www.motorola.com/webapp/sps/library/prod_lib.jsp)
32-Bit Embedded Processors
68K/ColdFire
68K M680X0
851 MMU: MC68851UM
030 MMU: MC68030UM
040 MMU: MC68040UM
060 MMU: MC68060UM
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Does the standard A1200 motherboard '020 have a MMU?
No.
I understand it's the 68EC020 so does this mean no MMU or no FPU - or neither?
No. For 68020 EC means it has 24bit address bus, not 32bit. No 68020 model has built-in MMU or FPU.
Why did Amigas never implement parity or ECC like in Unix servers?
Because parity/ECC memory was (and is) expensive and not needed for games machine.
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Cheers Piru, I should have thought of that :-D
Yes, my avatar is Guy.brush ;-)
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Try the MC68851 and MC68030 programming guides; they have proper explanations and lots of pseudo code. Avoid the MC68k-family programming guide which lists all the mnemonics.
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I'm reading the 060 MMU guide.. and it's going over my head :-(