公开(公告)号：CA1216953A

公开(公告)日：1987-01-20

申请号：CA473182

申请日：1985-01-30

Applicant: IBM

Inventor： CHESELKA HARRY ,  HLADIK GERALD J ,  KARABATSOS CHRIS ,  MOSHER LAWRENCE G ,  MORRISON RICHARD M

IPC: G06F12/02 ,  G06F13/00 ,  G06F13/12 ,  G06F13/14 ,  G06F13/38

Abstract: REMOTE FAN OUT FACILITY FOR DATA TERMINALS A remote fan out facility used in an information handling system including a plurality of data terminals located remotely from a central processor unit. Messages transmitted from the central processing unit to one of the plurality of data terminals are modified by creating and inserting a terminal device address into the outbound messages. The messages are then transmitted to a fan out box located near the addressed terminal. The fan out box strips the terminal address from the received message, decodes the stripped address, and directs the message to the appropriate data terminal according to the stripped decoded address. By this means, a single serial transmission link can be used to connect the central processing unit to a plurality of data terminals without undue modification of an existing system.

公开(公告)号：CA1257707A

公开(公告)日：1989-07-18

申请号：CA510143

申请日：1986-05-28

Applicant: IBM

Inventor： BUCKLEY JAMES F ,  KENNEY GARRISON Q ,  MORRISON RICHARD M ,  STEMBER MICHAEL J ,  WENDELL EDWARD J

IPC: G06F9/00 ,  G06F11/22 ,  G06F12/06

Abstract: A terminal controller system is described wherein several feature cards are plugged into slots on a board, and I/O signal cables are connected between cards and/or remote multiplexors or terminals. A special purpose card identification (ID) bus is driven by the feature cards and received by an ID adapter. The ID adapter has one select line running to each of the slots on the board. The ID adapter enables the select lines one at a time, whereby the selected feature cards drive their IDs onto the ID bus. A processor records the slot population by ID and also can analyze the IDs to determine if a valid configuration exists. The processor then performs a wrap test on each of its ports. This test alters the ID which it wraps and by comparison with the IDs recorded originally, this enables the processor to logically establish the physical link to particular cards connected to the ports.