Sun Microsystems Ultra 1 Creator Series Service Manual page 209

Glossary
address A unique location within a computer memory or a peripheral. Reference is
usually made to an address for retrieving or storing data.
APC Audio processor controller. An ASIC responsible for audio processing control.
ASIC Application specific integrated circuit.
BMX Buffered memory crossbar. An ASIC responsible for connecting a 144-bit UPA
data bus, a 288-bit-wide DRAM memory bus, and a 72-bit UPA data bus.
boot A term used to identify the process of reading in initial software to the
computer.
boot PROM In Sun Workstations, contains the PROM monitor program, a command
interpreter used for booting, resetting, low-level configuration, and simple test
procedures.
default A preset value that is assumed to be correct unless changed by the user.
DMA Direct memory access.
DPI Dots per inch.
DPS Data path scheduler. Controls all data flow coordinating the activity of the
BMX chips.
DRAM Dynamic random-access memory. A read/write dynamic memory in which the
data can be read or written in approximately the same amount of time for any
memory location.
DSIMM DRAM Single In-line Memory Module. A small printed circuit card that
contains dynamic random access memory (DRAM) chips.
DTAG Dual tag or data tag.
EMI Electrostatic magnetic interference. Electrical phenomena that directly or
indirectly, contributes to a degradation in performance of an electronic system.
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