On Thursday, August 30, 2018 at 12:41:32 PM UTC-4, Janne Johansson wrote:   
   >    
   > Doing PCBs before you know how the stuff will map into memory seems a   
   > slight bit backwards.   
      
   Maybe, but not always.  I'm designing my own computer as well (8-bit, 65C02   
   based).  It will use a CPLD to control the memory mapping.  This basically   
   means I can change the memory mapping anytime I like.  In fact, I plan on   
   supporting different memory    
   maps to run some legacy software from different machines.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: Agency HUB, Dunedin - New Zealand | Fido<>Usenet Gateway (3:770/3)