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Registers S16A User’s Guide
26 EDT, Inc. October, 1996
Registers
The S16A SBus 16-bit Dual Analog Interface is configured and controlled with 8-bit and 32-bit SBus
registers. Eleven additional internal registers in the Analog Input Module are accessed indirectly through
the SBus registers using a simple protocol. Applications access S16A registers through library calls or ioctl
calls with S16A-specific parameters, as described in the s16a.h header file.
NOTE: All registers initialized and manipulated by the S16A driver. User applications
do not ordinarily need to read or write these registers.
In addition, the S16A provides a standard SBus configuration ROM at the beginning of its block of
addresses. Thus the S16A answers with valid data for the first 64 KBytes, in addition to the SBus registers.