V260 record documentation
Carl Lionberger  7 July 98

Ai records are used for reading the scaler values; the board is assumed
to be configured as 16 24-bit scalers.  The VME board number [0-7] and
selects the board and the signal number [0-15] selects the scaler.

Bi records are used only for reading the inhibit status of the board.  For
each board [0-7], any of the signals [0-15] may be used in the vme io
specification; all scalers on a module will have the same status.  A 1
indicates an inhibited condition.

Bo records are used for controlling the scaler module; each control
operation effects all the scalers.  The vme card parameter [0-7] selects
the board, and the signal parameter [0-2] selects the function as follows:
selects reset, 1 selects inhibit setting, and 2 selects incremention.
Reset occurs when a one is written to a reset record; a one written to an
inhibit record sets the inhibit bit and a zero resets it; a one written to
an incremention record increments all scalers on the board.