公开(公告)号：JPH06259196A

公开(公告)日：1994-09-16

申请号：JP4405193

申请日：1993-03-04

Applicant: IBM

Inventor： ASANO HIDEO ,  SHIMOMURA KEISUKE ,  MURAKAMI MASAYUKI

IPC: G06F3/06 ,  G06F13/14 ,  G06F13/40 ,  G11B33/06

Abstract: PURPOSE: To designate two disk driving devices connected with an AT interface as a master or a slave in local selection or cable selection only by one jumper block. CONSTITUTION: This is a disk driving device connected through plural interface lines including one interface line connected with a first voltage level of a data processor with the data processor. This device includes plural connecting points connected with the plural interfaces lines, first connecting point selectively connected with one interface line, second connecting point which is held in a floating voltage, third connecting point connected with the first voltage level, fourth connecting point connected with a second voltage level, and selectively connected with one of the first, second, and third connecting points, a controller connected with the fourth connecting point which detects the voltage level of the fourth connecting point, and recognizes itself as a first disk driving device or a second disk driving device.