Glossary
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National Instruments Corporation
G-5
interrupt level
the relative priority at which a device can interrupt
IRQ*
Interrupt Signal
K
KB
kilobytes of memory
L
LED
Light-Emitting Diode
logical address
an 8-bit number that uniquely identifies each VXIbus device in a system.
It defines the A16 register address of a device, and indicates Commander
and Servant relationships.
M
master
a functional part of a VME/VXIbus device that initiates data transfers on
the backplane. A transfer can be either a read or a write.
MB
megabytes of memory
MBD
Message-Based Device
message-based
device
an intelligent device that implements the defined VXIbus registers and
communication protocols. These devices are able to use Word Serial
Protocol to communicate with one another through communication
registers.
MITE
a National Instruments custom ASIC, a sophisticated dual-channel DMA
controller that incorporates the Synchronous MXI and VME64 protocols to
achieve high-performance block transfer rates
N
NI-VXI
the National Instruments bus interface software for VME/VXIbus systems
Non-Slot 0 device
a device configured for installation in any slot in a VXIbus mainframe other
than Slot 0. Installing such a device into Slot 0 can damage the device,
the VXIbus backplane, or both.
