Re: Where Big Blue blew it?
You should read the book "Inside Intel", a very interesting and well written book, And 5150 is a Intel processor and AMD is a competitor to Intel with a Intel instruction set.
That's probably a fine book, however the 5150 is the model number of the IBM PC. The IBM PC came with mostly Intel CPUs indeed and all three of the motherboards in my own collection have Intel (I just checked), however AMD was a licensed second source for the 8088 processor. IBM would not use components unless they had a second source. There is no denying that there are machines around with AMD processors. A quick Google finds this one.