architecture

CHIP : Today no chip is designed from scratch.. Every chip is derived from previous chips with some changes in specifications based on customer/market requirement. When architecture of chip is started then old chip architecture is taken as reference and few changes in register definitions or memory or other module addition/subtraction/modification is done. Once architecture is made then chip is given to designers and chip is made. It is obvious that new chip will always have many features of old chip with better features added. but sometimes few old features can be problematic for one customer and good for for other customer.

LIFE : Similarly child(new chip) also doesnt have architecture from scratch. It has almost all features of parents(old chip) with similar architecture but along with new and improved features as per environment(customer above) needs. It is again true that this child might be good for certain environments(customer) and bad for others.