Comparative Study on Reconfigurable Devices for Analog Evolvable Hardware
Wang Yue-ke · Dianzi qijian · 2008
The lack of flexible reconfigurable devices essential to the study of hardware evolution process,namely evolvable hardware(EHW),has led the researchers into a dilemma.On one hand,the original purpose of commercial reconfigurable devices is not for evolvable hardware dedicatedly,though,most of which do have the ability of dynamically reconfiguration which is necessary for evolution.On the other hand the custom designed EHW-oriented chips are not commercial available,not either seem to be available in the near future.Two categories of reconfigurable analog devices,commercial field programmable analog array(FPAA)devices and custom designed field programmable transistor array(FPTA)devices are studied referring to their suitability for designing evolvable hardware.The authors argue that until the FPTA begin commercial available,it's significant to go through FPAA EHW research since these devices already have flexible reconfiguration interface and enough on-chip reprogrammable resources.