User`s manual

Glossary
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Raven The PowerPC-to-PCI local bus bridge chip developed by
Motorola for the PowerPlus architecture (8+ boards). It
provides the necessary interface between the PowerPC 60x,
or 750x bus and the PCI bus, and acts as interrupt controller.
Reduced-Instruction-Set Computer (RISC)
A computer in which the processorÕs instruction set is
limited to constant-length instructions that can usually be
executed in a single clock cycle.
RFI Radio Frequency Interference
RGB The three separate color signals: Red, Green, and Blue.
Used with color displays, an interface that uses these three
color signals as opposed to an interface used with a
monochrome display that requires only a single signal. Both
digital and analog RGB interfaces exist.
RISC See Reduced Instruction Set Computer (RISC).
ROM Read-Only Memory
RTC Real-Time Clock
SBC Single Board Computer
SCSI Small Computer Systems Interface. An industry-standard
high-speed interface primarily used for secondary storage.
SCSI-1 provides up to 5 Mbps data transfer.
SCSI-2 (Fast/Wide) An improvement over plain SCSI; and includes command
queuing. Fast SCSI provides 10 Mbps data transfer on an 8-
bit bus. Wide SCSI provides up to 40 Mbps data transfer on
a 16- or 32-bit bus.
serial port A connector that can exchange data with an I/O device one
bit at a time. It may operate synchronously or
asynchronously, and may include start bits, stop bits, and/
or parity.
SIM Serial Interface Module
SIMM Single Inline Memory Module. A small circuit board with
RAM chips (normally surface mounted) on it designed to fit
into a standard slot.
SIO Super I/O controller