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S11LLC01 |
Replacing PS Controls Front End Minicomputers by VME Based 32-bit Processors |
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- A.G. Gagnaire, Ch. Serre, C.H. Sicard, N. de Metz-Noblat
CERN, Geneva, Switzerland
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The PS controls have started the first phase of system rejuvenation, targeted towards the LEP Preinjector Controls. The main impact of this phase is in the architectural change, as both the front-end minicomputers and the CAMAC embedded microprocessors are replaced by microprocessor based VME crates called Device Stub Controllers (DSC). This paper discusses the different steps planned for this first phase, i.e: - implementing the basic set of CERN Accelerator common facilities for DSCs (error handling, system surveillance, remote boot and network access); - porting the equipment access software layer; ¿ applying the Real-time tasks to the LynxOS operating system and J/O architecture, conforming to the real-time constraints for control and acquisition; - defining the number and contents of the different DSC needed, according to geographical and cpu-load constraints; - providing the general services outside the DSC crates (file servers, data-base services); - emulating the current Console programs onto the new workstations.
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DOI • |
reference for this paper
※ doi:10.18429/JACoW-ICALEPCS1991-S11LLC01
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About • |
Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992 |
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