I am using the ESP-488 on VxWorks as the driver for communicating with my GPIB-ENET/100.  I have multiple VxWorks systems that need to communicate simultaneously with the GPIB-ENET/100.  However, the ESP-488 doesn't support the NI-488.2 function iblck.  How can I achieve the functionality of iblck in ESP-488?
-Daniel