From: muta...@gmail.com   
      
   On Sunday, April 30, 2023 at 9:19:23 PM UTC+8, muta...@gmail.com wrote:   
      
   > > >> the 66 "may"    
   > > >> be ignored by 8086/88, could be an alias for other as well.    
   > > >    
   > > > How can it be an alias on an 8086?    
   >    
   > > would need to remove several layers of dust from my collection    
   > > of Intel books to check if it is mentioned at all.    
   > > the code 0x60..group could be alias for 0x70.. or 0x50..    
   > > similar to 0x82 which is (was until 2000) an alias for 0x80    
   >    
   > This question was never resolved.    
   >    
   > Someone has appeared who is trying to run PDOS/86 on a    
   > 360k floppy on his PC AT.    
   >    
   > So that's 80286 instead of 8086/88.    
   >    
   > 1. Can we get a result from this machine, or does that have    
   > no bearing on the XT?    
   >    
   > 2. If the answer to the above is "yes", can you suggest a test?    
      
   Got an answer to this ...   
      
   All the 6x opcodes are aliases of the corresponding 7x (conditional jump)   
   opcodes on 8086 and 8088.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)