How security holes happen

[Mark H. Harris]

On Thursday, March 6, 2014 8:13:02 PM UTC-6, MRAB wrote:
> 
> The Z80's architecture and instruction set is a superset of that of the
> 8080; the 6502's architecture and instruction set isn't a superset of,
> or even compatible with, that of the 6800 (although it can use the same
> I/O, etc, chips).

My point is not what, but who.  Motorola engineers designed the 6502. A rose
is a rose by any other name. Its the people who count... if Motorola had listened 
to those guys, who knows ... ?  neither here nor there now, or course.