Experimental Physics and
Industrial Control System

Ned Arnold <[email protected]> · Thu, 16 Mar 2000 08:19:43 -0600 (CST)

> 
> Hi,
> 
> How do I determine the link number L in the input fields of a GPIB_IO
> device?  We are attempting to use and NI-1014.  I looked through the
> driver to find that the driver automatically searches for  NI-1014
> boards starting at VME address 0x5000 and that each  board occupies
> 0x200 bytes of VME space.  I forgot to write down how far the search
> proceeds in VME space.  From what I could tell the number after L
> identifies which controller to use based on the distribution in VME
> space.  So if I have the 1014 at address 0x5000 and my GPIB device at 2
> the INP specification would be  "#L0 A2 @".  Is this correct?
> 
> Thanks
> 
> Geoff
> 

Yes, that's correct.

Old style drivers have the starting address, interrupt vectors, 
max number of cards, etc stored in include/module_types.h .  The 1014
has the following :

/******************************************************************************
 *
 * Addresses and IRQ information used by the NI1014 and NI1014D cards.
 *
 ******************************************************************************/
MODULE_TYPES_DEF(unsigned short NIGPIB_SHORT_OFF)
#ifdef MODULE_TYPES_INIT
                =  0x5000;/* First address of link 0's region */
#endif
                                /* Each link uses 0x0200 bytes */
#define    NIGPIB_NUM_LINKS  4     /* Max number of NI GPIB ports allowed */
MODULE_TYPES_DEF(int NIGPIB_IVEC_BASE )
#ifdef MODULE_TYPES_INIT
                = 100;   /* Vectored interrupts (2 used for each link) */
#endif
MODULE_TYPES_DEF(int NIGPIB_IRQ_LEVEL  )
#ifdef MODULE_TYPES_INIT
                =5;     /* IRQ level */
#endif

#if 0   /* JRW */
#define NI1014_LINK_NUM_BASE    0
#endif

Newer drivers and device support require a configuration statement in the
st.cmd file, giving the application developer a little more flexibility.

Example :

# Video Sync Gen Configure
#SyncGenConfigure(Card, CardAddress, IrqVector, IrqLevel)
SyncGenConfigure(0, 0x8b00, 0, 1)

The trick is knowing what needs done for any given device type.

	Ned

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System