Implementation of opiSetup for the O600 machine.
This is for internal use only. Use opiSetup()
with these Arguments.
A list containing one of the following
err = -1
to be implemented
err = -2
O600 sent back an error; bad background parameters
err = -3
O600 sent back an error; bad fixation parameters
err = NULL
Success
Background color 0 to 255.
fixation type 1, 2, 3 or 4.
fixation color 0, 2, 4 or 5.
fixation point intensity 0 to 255.