From: nowhere@never.at   
      
   On 03/04/2023 17:37, muta...@gmail.com wrote:   
   ...   
      
   > I've written a serial port driver before, for the 8086.   
   > It wasn't a lot of code.   
      
   which pins of the 8086 CPU did you use to become RS232 ?   
      
   I programmed Intel 8251A chips which I added to my Z80 set 1979.   
      
   ...   
   > Can e.g. the serial port be dual-driven by either a memory   
   > write or an IO to cover both?   
      
   sure possible, but why both ?   
   and be aware that serial ports have more than one address.   
      
   ...   
   >> Perhaps reading up on computer architecture would be useful.   
      
   YES, you should read at least a few CPU-manuals.   
   __   
   wolfgang   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)