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1. The Free On-line Dictionary of Computing (30 December 2018)
Motorola 68010
MC68010

    A microprocessor from Motorola.  It was the
   successor to the Motorola 68000 and was followed by the
   Motorola 68020.  Some instructions which were previously
   user mode were made system mode, which necessitated
   patches to a few programs.

   The 68010's main advantage over the 68000 was that it could
   recover from a bus fault.  The 68000 microcode didn't save
   enough state to restart all instructions; the 68010 corrected
   this fault.  This allowed it to use paged virtual memory.

   The 68010's DBxx (decrement and branch) instructions could
   hold and execute the preceding instruction in the prefetch
   buffer, allowing some two-instruction loops to execute
   without refetching instructions.

   At one time there was a 68010 variant that was pin-for-pin
   compatible with the 68000.  Early Amiga hackers replaced
   their 68000s with 68010s in order to get a small performance
   increase.

   (1995-11-29)


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