ad(4) Unsupported ad(4)Namead - Data Translation A/D converter
Syntax
device ad0 at uba0 csr 0170400 vector adintr
Description
The converter provides the interface to the Data Translation A/D con‐
verter. This is not a real-time driver, but merely allows the user
process to sample the board's channels one at a time. Each minor
device selects a different A/D board.
The driver communicates to a user process by means of ioctls. The
AD_CHAN ioctl selects which channel of the board to read. For example,
chan = 5; ioctl(fd, AD_CHAN, &chan);
selects channel 5. The AD_READ ioctl actually reads the data and
returns it to the user process. An example is
ioctl(fd, AD_READ, &data);
Files
VAX ad(4)