Motorola PowerQUICC II MPC8280 Series Reference Manual page 1428

Least-significant byte (LSB). Byte of least value in an address, register, data
Little-endian. Byte-ordering method in memory where the address n of a
M
Master. Name given to a bus device that has been granted control or
Memory access ordering. Specific order in which the processor performs
Memory controller. Unit whose primary function is to control the external
Memory coherency. Aspect of caching in which it is ensured that an accurate
Memory consistency. Refers to agreement of levels of memory with respect
Memory management unit (MMU). The functional unit that is capable of
Microarchitecture. The hardware details of a microprocessor's design. Such
Mnemonic. The abbreviated name of an instruction used for coding.
Modified state. When a cache block is in the modified state, it has been
Munging. A modification performed on an effective address that allows it to
Glossary-6
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element, or instruction encoding.
word corresponds to the least-significant byte. In an addressed
memory word, the bytes are ordered (left to right) 3, 2, 1, 0, with 3
being the most-significant byte. See Big-endian.
mastership of the bus.
load and store memory accesses and the order in which those
accesses complete.
bus memories and I/O devices.
view of memory is provided to all devices that share system memory.
to a single processor and system memory (for example, on-chip
cache, secondary cache, and system memory).
translating an effective (logical) address to a physical address,
providing protection mechanisms, and defining caching methods.
details are not defined by the PowerPC architecture.
modified by the processor since it was copied from memory. See
MESI.
appear to the processor that individual aligned scalars are stored as
little-endian values, when in fact it is stored in big-endian order, but
at different byte addresses within double words. Note that munging
affects only the effective address and not the byte order. Note also
that this term is not used by the PowerPC architecture.
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