Abstract: Application of Programmable Logic Device(PLD) makes the design of logic circuits more flexible,and the realization more convenient.Present PLD CAD systems are not always adaptable to some field application and need special system input techniques.This paper describes a PLD oriented ABEL text file automatic generation system of Large scale Multiple Input Single Output Logic circuits.It can partition large scale logic into PLD chips respectively,produce their ABEL text files and give their links' mode automatically.Because of specific selection of partitioning algorithm,none combination explosion problems would be occured in this system.