PowerPC Microprocessor Family: The Programmer’s Reference Guide
Acronyms and Abbreviated Terms
ASR Address space register
BAT Block address translation
BUID Bus unit ID
CR Condition register
CTR Count register
DAR Data address register
DBAT Data BAT
DEC Decrementer register
DSISR Register used for determining the source of a DSI exception
DTLB Data translation lookaside buffer
EA Effective address
EAR External access register
FPR Floating-point register
FPSCR Floating-point status and control register
GPR General-purpose register
IBAT Instruction BAT
IEEE Institute of Electrical and Electronics Engineers
IU Integer unit
LR Link register
MMU Memory management unit
msb Most significant bit
MSR Machine state register
NaN Not a number
No-Op No operation
OEA Operating environment architecture
PTE Page table entry
PTEG Page table entry group
PVR Processor version register
RISC Reduced instruction set computing
SDR1 Register that specifies the page table base address for virtual-to-physical address translation
SIMM Signed immediate value
SLB Segment lookaside buffe
SPR Special-purpose register
SPRGn Registers available for general purposes
SR Segment register
SRR0 Machine status save/restore register 0
SRR1 Machine status save/restore register 1
TB Time base register
TLB Translation lookaside buffer
UIMM Unsigned immediate value
UISA User instruction set architecture
VEA Virtual environment architecture
XER Register used for indicating conditions such as carries and overflows for integer operations
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