From: joemonk64@gmail.com   
      
   > But while we're here, would it have been possible to    
   > create an 8080 that wasn't so different from the 8086    
   > that there would be an expectation of binary    
   > compatibility?    
   >    
      
   > What do you recommend?   
      
   A chip by NEC called the V20/V30. It could run both 8080A and 8086 code...   
   (V20 = 8 bit bus, model uPD70108, V30 = 16 bit bus, model uPD70116) It was   
   binary compatible with both the 8080A and the 8086.   
      
   "The uPD70108/70116 has two CPU operating modes: native and 8080 emulation. In   
   native mode, the uPD70108/70116 executes all the instructions given in Section   
   12, with the exception of the RETEM and CALLN instructions. In 8080 mode, the   
   microprocessor    
   executes the instruction set for the uPD8080AF and the RETEM and CALLN   
   instructions. These modes are selected by special instructions or by using an   
   interrupt. The most significant bit of the PSW is a mode (MO) flag that   
   controls mode selection."   
      
   https://ia903205.us.archive.org/28/items/bitsavers_necV20V30U_11   
   51331/V20_V30_Users_Manual_Oct86.pdf   
      
   Joe   
      
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