TYAN TOMAHAWK BX Manual page 80

Appendix 2
Glossary
IDE INT
(IDE Interrupt) is a hardware interrupt signal that goes to the IDE.
I/O
Input/Output is the connection between your computer and another piece
of hardware (mouse, keyboard, etc.).
IRQ
An Interrupt Request is an electronic request that runs from a hardware
device to the CPU. The interrupt controller assigns priorities to incoming
requests and delivers them to the CPU. It is important that there is only one
device hooked up to each IRQ line; doubling up devices on IRQ lines can lock
up your system. Happily, Plug and Play operating systems take care of these
details for you.
ISA
stands for Industry Standard Architecture. ISA is a slower 8- or 16-bit
BUS (data pathway).
Latency
is the amount of time that one part of a system spends waiting for
another part to catch up. This is most common when the system sends data
out to a peripheral device, and is waiting for the peripheral to send some data
back (peripherals tend to be slower than onboard system components).
NVRAM
ROM and EEPROM are both examples of Non-Volatile RAM,
memory that holds its data without power. DRAM, in contrast, is volatile.
OEMs
(Original Equipment Manufacturers) like Compaq or IBM package
other companies' motherboards and hardware inside their case and sell them.
parallel port
The
same time (that is, in parallel form, eight bits at the same time).
PCI
stands for Peripheral Component Interconnect. PCI is a 32-bit local bus
(data pathway) which is faster than the ISA bus. Local buses are those which
operate within a single system (as opposed to a network bus, which connects
multiple systems).
PCI PIO
The (PCI Programmable Input/Output) modes are the data
transfer modes used by IDE drives. These modes use the CPU for data
transfer (DMA channels do not). PCI refers to the type of bus used by these
modes to communicate with the CPU.
transmits the bits of a byte on eight different wires at the
80
http://www.tyan.com