Glossary
G-8
ni.com
VMEbus System
Controller
a device configured for installation in Slot 0 of a VXIbus mainframe or Slot
1 of a VMEbus chassis. This device is unique in the VMEbus system in that
it performs the VMEbus System Controller functions, including clock
sourcing and arbitration for data transfers across the backplane. Installing
such a device into any other slot can damage the device, the
VMEbus/VXIbus backplane, or both.
VXIbus
VMEbus Extensions for Instrumentation
vxiinit
a program in the NI-VXI bus interface software package that initializes the
board interrupts, shared RAM, VXI register configurations, and bus
configurations
vxitedit
VXI Resource Editor program, a part of the NI-VXI bus interface software
package. Used to configure the system, edit the manufacturer name and ID
numbers, edit the model names of VXI and non-VXI devices in the system,
as well as the system interrupt configuration information, and display the
system configuration information generated by the Resource Manager.
W
Word Serial Protocol
the simplest required communication protocol supported by message-based
devices in a VXIbus system. It utilizes the A16 communication registers to
transfer data using a simple polling handshake method.
write posting
a mechanism that signifies that a device will immediately give a successful
acknowledge to a write transfer and place the transfer in a local buffer. The
device can then independently complete the write cycle to the destination.
