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   comp.arch      Apparently more than just beeps & boops      131,241 messages   

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   Message 129,358 of 131,241   
   John Savard to All   
   Re: By Popular Demand   
   09 Aug 25 17:01:30   
   
   From: quadibloc@invalid.invalid   
      
   I modified the 35-bit instructions so as to introduce the wonders of   
   addressing modes to load-store memory-reference instructions with a 16-bit   
   displacement, instead of just load-store memory-reference instructions   
   using register indirect addressing.   
      
   But that lost the memory-reference operate instructions the opcodes for   
   the Compatible floating-point type. That shouldn't have been a worry...   
   but the feature in the Type V header that I thought I had at one time had   
   been removed. So I put it back... and added another one that was needed   
   which I had never thought to include.   
      
   So now I can say that in this block, not only will normal floating-point   
   instructions use the old 360 format, but they'll *truncate* instead of   
   rounding, to produce exactly the same results, bad as they might have   
   been, as a real 360 would have produced back in the day.   
      
   The Type V block format, at least with option bits 00, was made to do a   
   particular job - and so I'm seeing to it that it will do that job!   
      
   John Savard   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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