IIRC the 360/50's didn't have parity checking CPU buss. Long story short CE 
 told me in early 80's CE overtime dropped 50% with intro of 370' and 
another 50%  when 303x's were withdrawn.
 
 
In a message dated 1/8/2014 10:31:01 A.M. Central Standard Time,  
[email protected] writes:

I  believe I can dig in my memory  deeper...


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