CAMAC - 3982
List Sequencing Crate Controller |
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ABOUT 3982
The Model 3982 is a single-width CAMAC module that functions as an
autonomous auxiliary controller within a CAMAC crate. Connection to the crate's
N (Station Number) and L (Look-at-Me) lines is made through the Auxiliary Controller
Bus (ACB) via a main crate controller such as the Model 3920-Series, 3952, 3988, or
3989. Up to 8192 unique commands may be executed from a preloaded NAF list. This
list is loaded in a Random Access Memory (RAM) from the host computer prior to
execution. Commands to be executed may also be optionally drawn from a
preprogrammed Programmable Read Only Memory (PROM)mounted in place of the
RAM components.
Data associated with commands in the NAF list is stored in one of two 24-bit FIFO
memories. Module options determine whether this memory is 1024, 2048, or 4096
words deep. For CAMAC Write commands, data is preloaded into one of the FIFOs
before list execution begins. Data from CAMAC Read commands is stored in the other
FIFO at S1 time of the Dataway cycle for subsequent readout by the host computer. The
CAMAC Read data may also be read out over the Front-bus.
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