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MOTOROLA M68040 USER’S MANUAL INDEX-3
Bus Error, 3-22, 3-30, 4-12, 7-37, 7-42, 7-43,
9-21
Double Bus Fault, 7-43, 8-8, 8-18
F-Line, A-6, B-10
Format Error, 8-12, 8-28, 9-20
FTRAPcc, 9-20
Illegal Instruction, 8-9
Interrupt, 5-14, 7-29, 7-31, 8-12, 8-20
Memory Management Unit, 8-7
Priority, 8-19
Privilege Violation, 8-10
Reset, 5-11, 7-67, 7-68, 8-17
Trace, 8-10
Trap, 8-8, 8-20
Unimplemented Floating-Point Instruction, 1-2,
9-20
Unimplemented Instruction, 8-9
Explicit Bus Ownership,
see
Bus Arbitration
States
Extended Precision,
see
Data Format
External Bus Arbiter, 5-7, 5-10, 7-45, 7-46, 7-50,
7-53, 7-55, 7-58
EXTEST, 6-3, 6-12
–F–
F-line, A-6, B-10
Fetch Stage,
see
Integer Unit Pipeline
Floating-Point Exceptions, 1-8, 9-3
Arithmetic, 9-24
Branch/Set on Unordered (BSUN), 9-18,
9-25–9-27
Divide by Zero, 9-36
Floating-Point, 9-5
Inexact Result (INEX1 And INEX2), 9-24,
9-36–9-38, 9-42
Multiple Exceptions, 9-25
Operand Error (OPERR), 9-28–9-31
Overflow Exception (OVFL), 9-16, 9-31–9-33,
9-42
Round-Off Error, 9-11
SNAN Exception, 9-27, 9-28
Underflow (UNFL), 9-16, 9-33–9-36, 9-42
Floating-Point Pipeline, 9-1, 9-26
Floating-Point Registers
Floating-Point Status Register (FPSR), 1-8,
9-4, 9-15
AEXC Byte, 9-5; Setting the AEXC, 9-6
EXC Byte, 9-5, 9-13, 9-34, 9-37
Floating-Point Registers
FPCC Byte, 9-4
Quotient Byte, 9-5
Floating-Point Control Register (FPCR), 1-8,
9-3, 9-11, 9-18
ENABLE Byte, 9-3, 9-25; Encodings, 9-3
MODE Byte, 9-3, 9-31, 9-37
Floating-Point Data Register, 9-2, 9-15
Floating-Point Registers
Floating-Point Instruction Address Register
(FPIAR), 1-8, 9-6, 9-32, 9-35, 9-38
Floating-Point State Frames, 7-38, 9-39;
Field Definitions, 9-42, 9-43
Floating-Point Unit (FPU), 1-2, 1-4
Exception Handler, 9-5
Floating-Point State Frame, 7-38
Format $4 Stack Frame, A-5
Integer Pipeline, 10-29
Programming Model, 9-2
Floating-Point User Exception Handler
BSUN, 9-26
Divide by Zero, 9-36
INEX, 9-28, 9-30, 9-32, 9-33, 9-35, 9-37, 9-38
OPERR, 9-29, 9-30
OVFL, 9-32, 9-33
SNAN, 9-28
UNFL, 9-35
Floating-Point Vector Numbers, 9-20
Forced Rounding Precision, 9-13, 9-31, 9-34
Format Error, 8-12, 8-28, 9-20
–H–
Heat Sink, 11-29, 11-31
HIGHZ, 6-3, 6-12
–I–
IEEE Aware Tests,
see
Conditional Tests
IEEE Standard 1149.1,
see
JTAG
Implicit Bus Ownership,
see
Bus Arbitration
States
Indeterminate Condition,
see
Bus Arbitration
Indirect Descriptor,
see
Descriptors
Instruction Execution, 2-5
Instruction Timing, 10-1–10-36
Instruction Prefetches, 4-13
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