From: quadibloc@invalid.invalid   
      
   On Thu, 21 Aug 2025 02:32:42 +0000, John Savard wrote:   
      
   > Alas, no. Even making instructions as short as possible to exist in a   
   > limited form does _not_ permit them to coexist with the existing full   
   > instruction set as I had hoped in this particular fashion.   
   >   
   > It may, however, be possible to salvage something from this idea.   
      
   It was possible to salvage something, indeed.   
      
   I threw out the other idea, of having a header for 36-bit instructions,   
   since the same capabilities were already provided by variable-length   
   instructions.   
      
   What I salvaged was memory to register operate instructions that could fit   
   inside the basic 32-bit instruction set. To make them fit, though, I had   
   to take that opcode space hog, the load and store multiple instructions,   
   and shrink it down - by also restricting those instructions to aligned   
   operands.   
      
   So, while the leading bits of the headers will get shuffled around a bit,   
   the basic structure of the headers won't end up getting changed   
   significantly. Although I would have liked to trim down the headers, I   
   also didn't want to lose the capabilities to which they offered access, so   
   this does not dismay me too much.   
      
   John Savard   
      
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