Service Processor Architecture and Microcode Algorithm for Performing Protocol Conversions Start/Stop, BSC, SDLC
Original Publication Date: 1989-May-01
Included in the Prior Art Database: 2005-Jan-28
This article describes the hardware and the associated microcode architecture which give the full protocol conversion capability of all attached consoles to a service processor, which is also named MOSS (Maintenance Operator Subsystem). The protocol used by each attached console is under customer control and can be modified at any time to comply with a new console or network, such as a migration from Start/Stop to BSC or SDLC. (Image Omitted) Each attached console has its own PCA (Protocol Conversion Adapter) set for the required application and protocol. The Protocol Conversion Adapter Code manages data between interconnected consoles at bus level and performs arbitration to avoid contention.