NAME¶

ibrsc - request system control (board)

SYNOPSIS¶

#include <gpib/ib.h>

int ibrsc (int ud, int request_control);

DESCRIPTION¶

If request_control is nonzero, then the board specified by the board descriptor ud is made system controller. If request_control is zero, then the board releases system control.

The system controller has the ability to assert the REN and IFC lines, and is typically also the controller-in-charge. A GPIB bus may not have more than one system controller.

RETURN VALUE¶

The value of ibsta is returned.