Communication controller transparently integrated into a host CPU

US4322793A · kind A · utility

Assignee

• International Business Machines Corporation · US

Inventors

• Kurt-Inge Andersson · Öregrund, SE
• Victor Gjerstad · Öregrund, SE
• Karl G. Gohl · Öregrund, SE
• Lars Hallberg · Sollentuna, SE
• Bertil E. Norstedt · Lidingö, SE
• Helmut Schaal · Waldenbuch, DE

Key dates

• Filing date: Dec 26, 1979
• Grant date: Mar 30, 1982
• Expiry date: Dec 26, 1999

Classification

• Technology area (CPC G): Physics
• CPC primary: G06F13/385
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

Communication control functions are performed by an integrated adapter implemented as microcode resident in host CPU storage. The integrated adapter shares a common high speed bus with other CPU facilities. A high speed bus adapter provides an interface between the common high speed bus and low speed line adapters. Communication controlling commands and register structures are described.