Motorola MPC750 User Manual page 41

Table iii describes instruction field notation used in this manual.
Table iii. Instruction Field Conventions
The Architecture Specification Equivalent to:
BA,BB,BT crbA, crbB, crbO (respectively)
BF, BFA crfO, crfS (respectively)
0
d
OS ds
FLM FM
FRA,FRB,FRC,FR~FRS
frA, frB, frC, frO, frS (respectively)
FXM CRM
RA, RB, RT, RS
rA, rB, rO, rS (respectively)
SI SIMM
U IMM
UI UIMM
I, II, III 0 ... 0 (shaded)
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MPC750 RISC Microprocessor User's Manual