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Glossary
© National Instruments Corporation G-5 PCI-MXI-2 for Linux
EMI Electromagnetic Interference.
expansion ROM An onboard EEPROM that may contain device-specific initialization and
system boot functionality.
external controller In this configuration, a plug-in interface board in a computer is connected
to the VXI mainframe via one or more VXIbus extended controllers. The
computer then exerts overall control over VXIbus system operations.
F
fair requester A MXIbus master that will not arbitrate for the MXIbus after releasing
it until it detects the bus request signal inactive. This ensures that all
requesting devices will be granted use of the bus.
H
hex Hexadecimal; the numbering system with base 16, using the digits 0 to 9
and letters A to F.
Hz Hertz; cycles per second.
I
I/O Input/output; the techniques, media, and devices used to achieve
communication between machines and users.
IC Integrated Circuit.
IEEE Institute of Electrical and Electronics Engineers.
in. Inches.
interrupt A means for a device to request service from another device.
interrupt handler A VMEbus functional module that detects interrupt requests generated by
Interrupters and responds to those requests by requesting status and identify
information.
interrupt level The relative priority at which a device can interrupt.
IRQ* Interrupt signal.