Data acquisition with a VAX 11/780 and MBD branch driver

Journal Article · Thu Oct 01 04:00:00 EDT 1981 · IEEE Trans. Nucl. Sci.; (United States)

DOI:https://doi.org/10.1109/TNS.1981.4331857· OSTI ID:6727398

King, S E ^[1]; Lau, Y C; Gould, C R

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1. Duke Univ., Durham, NC

We have designed and implemented a general purpose data acquisition system, XSYS, for the Triangle Universities Nuclear Laboratory VAX-11/780. The interface is a CAMAC Branch Highway connected to a Microprogrammed Branch Driver (MBD-11). A single general reentrant MBD program handles CAMAC operations and data transfers to and from the VAX using a DMA transfer. Each of the eight MBD channels is controlled by an independent subprocess in the VAX which communicates with the MBD via the UNIBUS. Data are double buffered and are sorted by VAX user written EVAL codes after the MBD wakes a hibernating subprocess image. Scalar operations and control of external devices are also supported.

• OSTI ID: 6727398
• Journal Information: IEEE Trans. Nucl. Sci.; (United States), Journal Name: IEEE Trans. Nucl. Sci.; (United States) Vol. NS-28:5; ISSN IETNA
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430303* -- Particle Accelerators-- Experimental Facilities & Equipment
ACCELERATOR FACILITIES
CAMAC SYSTEM
COMMUNICATIONS
DATA ACQUISITION
DATA ACQUISITION SYSTEMS
DATA TRANSMISSION
DESIGN
EQUIPMENT INTERFACES
OPERATION