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Old 02 June 2016, 00:35   #313
Lord Aga
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Originally Posted by -Acid- View Post
The 68020 is not an 68000 it doesn't claim to be, the 68020 is the direct replacement of the 68000. The Vampire is emulating an 68000 while an 68020 is not it's a different CPU.

The 68020 does not fit the definition of emulation at all, it's an entirely different cpu with a different name with new functions etc. The only thing the Vampire is doing is emulating the 68000... if you cannot see the difference then there is no hope of you ever comprehending why it's not the same thing.
But an FPGA CPU (Vampire if you will) is also not an existing 680X0 CPU and it doesn't claim to be. It is a completely different CPU (superior architecture, better IPC, more instructions and everything). It is not a copy of any existing CPU. Different name, new functions, etc. Everything you said about 68020 also stands here.

They are either both emulations or neither of them is.

Originally Posted by -Acid- View Post
Yes but in this context it is emulating a different cpu. The 68000 is a real physical piece of hardware... the FPGA is also real but it is not a 68000 it is pretending to be one. The technicalities about how the logic gate functions are (almost) identical are irrelevant.
Wrong, and wrong. Read up on the Vampire CPU architecture.

Last edited by Lord Aga; 02 June 2016 at 00:42.
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