Claim 16 got dropped from your repost:

16. In a microprocessor system including a central processing unit, a method for clocking said central processing unit comprising the steps of:

providing said central processing unit upon an integrated circuit substrate, said central processing unit being constructed of a first plurality of transistors and being operative at a processing frequency;

providing an entire variable speed clock disposed upon said integrated circuit substrate, said variable speed clock being constructed of a second plurality of transistors;

clocking said central processing unit at a clock rate using said variable speed clock with said central processing unit being clocked by said variable speed clock at a variable frequency dependent upon variation in one or more fabrication or operational parameters associated with said integrated circuit substrate, said processing frequency and said clock rate varying in the same way relative to said variation in said one or more fabrication or operational parameters associated with said integrated circuit substrate;

connecting an on chip input/output interface between said central processing unit and an off-chip external memory bus, and exchanging coupling control signals, addresses and data between said input/output interface and said central processing unit; and

clocking said input/output interface using an off-chip external clock wherein said off-chip external clock is operative at a frequency independent of a clock frequency of said variable speed clock, wherein said central processing unit operates asynchronously to said input/output interface.