System for selecting an address in an input/output board
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 5, 1988
Grant Date -
N/A
app pub date -
Nov 20, 1985
filing date -
Mar 28, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An input/output board (10 to 12) address selection system selects a desired address in the pluralities of input and output boards (10 to 12) connected to a common bus (6) of an input/output interface unit (1) connected via a serial data transmission system to a main control unit (60). A programmable address translation circuit (5) is provided for deriving a slot select signal (s1 to s16) and an in-board address (BA) from an address for an input/output board accessing address which is provided from a control circuit (2) of the input/output interface unit (1). One of the input and output boards (10 to 12) is selected by the slot select signal (s1 to s16), and one of the addresses in the selected input or output board is selected by the in-board address (BA).
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