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.

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