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National Instruments Corporation
G-1
PCI-Based MXI-2 Interface for Windows
Glossary
Prefix
Meaning
Value
p-
pico-
10
–12
n-
nano-
10
–9
µ-
micro-
10
– 6
m-
milli-
10
–3
k-
kilo-
10
3
M-
mega-
10
6
G-
giga-
10
9
t-
tera-
10
12
A
A16 space
VXIbus address space equivalent to the VME 64 KB short address space.
In VXI, the upper 16 KB of A16 space is allocated for use by VXI devices
configuration registers. This 16 KB region is referred to as VXI
configuration space.
A24 space
VXIbus address space equivalent to the VME 16 MB
standard
address
space
A32 space
VXIbus address space equivalent to the VME 4 GB
extended
address space
ACFAIL
A VMEbus backplane signal that is asserted when a power failure has
occurred (either AC line source or power supply malfunction), or if it is
necessary to disable the power supply (such as for a high-temperature
condition)
address
Character code that identifies a specific location (or series of locations) in
memory. In VISA, it identifies a resource.
address modifier
One of six signals in the VMEbus specification used by VMEbus masters
to indicate the address space in which a data transfer is to take place
