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   comp.sys.atari.st      Discussion about 16 bit Atari micros      15,439 messages   

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   Message 15,027 of 15,439   
   Michael Schwingen to Francois LE COAT   
   Re: A German user here ???   
   29 Nov 15 23:29:06   
   
   From: news-1326478115@discworld.dascon.de   
      
   On 2015-11-29, Francois LE COAT  wrote:   
   >   
   > MC68060 processor of my Hades060 is internally clocked at 120MHz.   
      
   No, it is not. The MC68060 is superscalar (for integer, not floating-point),   
   meaning it executes up to two integer instructions per clock cycle (in   
   certain conditions).  That means given the right instructions, it runs   
   (nearly) *as fast as* a theoretical singlescalar CPU which runs at 120MHz,   
   but the internal logic of the MC68060 is nevertheless only clocked at 60MHz.   
   Also, with worst-case code, it falls back to singlescalar operation (see   
   section 10.1 in the datasheet).   
      
   The datasheet is quite clear in stating that internal logic is clocked at   
   "clk" pin speed, not 2*"clk".   
      
   cu   
   Michael   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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