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User’s Manual
IBM PowerPC 750GX and 750GL RISC Microprocessor
gx_preface.fm.(1.2)
March 27, 2006
Page 21 of 377
Terminology Conventions
The following table describes terminology conventions used in this manual and the equivalent terminology
used in the PowerPC Architecture specification.
Instruction Field Conventions
The following table describes instruction field conventions used in this manual and the equivalent conventions
from the PowerPC Architecture specification.
PowerPC Architecture Specification 750GX User’s Manual
Data-storage interrupt (DSI) DSI exception
Extended mnemonics Simplified mnemonics
Fixed-point unit (FXU) Integer unit (IU)
Instruction storage interrupt (ISI) ISI exception
Interrupt Exception
Privileged mode (or privileged state) Supervisor-level privilege
Problem mode (or problem state) User-level privilege
Real address Physical address
Relocation Translation
Storage (locations) Memory
Storage (the act of) Access
Store in Write back
Store through Write through
PowerPC Architecture Specification 750GX User’s Manual
BA, BB, BT crbA, crbB, crbD (respectively)
BF, BFA crfD, crfS (respectively)
D d
DS ds
FLM FM
FRA, FRB, FRC, FRT, FRS frA, frB, frC, frD, frS (respectively)
FXM CRM
RA, RB, RT, RS rA, rB, rD, rS (respectively)
SI SIMM
U IMM
UI UIMM
/, //, /// 0...0 (shaded)