In 8100, loop hardware for the attachment of a cluster of I/O units to a loop without having a large number of drops on the main loop cable.; 在IBM 8100信息處理系統(tǒng)中,一種環(huán)路硬件,用于將輸入輸出單元群集 器連接到環(huán)路中,使在主環(huán)路電纜上不用很多的分接器。