mc68ec060 Freescale Semiconductor, Inc, mc68ec060 Datasheet - Page 11

• Manufacturer Part Number: mc68ec060
• Description: Mc68060 Superscalar 68k Microprocessor Including The Lc060 And Ec060
• Manufacturer: Freescale Semiconductor, Inc

6.1.3.4
6.1.4
6.2
6.3
6.3.1
6.3.2
6.4
6.4.1
6.4.2
6.5
6.5.1
6.5.2
6.5.3
6.6
6.6.1
6.6.1.1
6.6.1.2
6.6.2
6.6.2.1
6.6.2.2
6.6.3
6.6.3.1
6.6.3.2
6.6.4
6.6.4.1
6.6.4.2
6.6.5
6.6.5.1
6.6.5.2
6.6.6
6.6.6.1
6.6.6.2
6.6.7
6.6.7.1
6.6.7.2
6.7
7.1
7.2
7.3
7.4
7.5
7.6
MOTOROLA
Floating-Point Data Formats and Data Types............................................... 6-7
Computational Accuracy ............................................................................. 6-11
Postprocessing Operation........................................................................... 6-15
Floating-Point Exceptions ........................................................................... 6-19
Floating-Point Arithmetic Exceptions .......................................................... 6-22
Floating-Point State Frames ....................................................................... 6-35
Bus Characteristics ....................................................................................... 7-1
Full-, Half-, and Quarter-Speed Bus Operation and BCLK ........................... 7-3
Acknowledge Termination Ignore State Capability ....................................... 7-4
Bus Control Register..................................................................................... 7-4
Data Transfer Mechanism............................................................................. 7-5
Misaligned Operands .................................................................................... 7-9
Floating-Point Instruction Address Register (FPIAR) ................................. 6-7
Intermediate Result................................................................................... 6-12
Rounding the Result ................................................................................. 6-13
Underflow, Round, and Overflow.............................................................. 6-15
Conditional Testing ................................................................................... 6-16
Unimplemented Floating-Point Instructions .............................................. 6-19
Unsupported Floating-Point Data Types................................................... 6-21
Unimplemented Effective Address Exception........................................... 6-22
Branch/Set on Unordered (BSUN)............................................................ 6-24
Signaling Not-a-Number (SNAN) .............................................................. 6-25
Operand Error ........................................................................................... 6-26
Overflow.................................................................................................... 6-28
Underflow.................................................................................................. 6-30
Divide-by-Zero .......................................................................................... 6-32
Inexact Result ........................................................................................... 6-33
Accrued Exception Byte ........................................................................... 6-6
Trap Disabled Results (FPCR BSUN Bit Cleared) ................................. 6-24
Trap Enabled Results (FPCR BSUN Bit Set) ......................................... 6-24
Trap Disabled Results (FPCR SNAN Bit Cleared) ................................. 6-25
Trap Enabled Results (FPCR SNAN Bit Set) ......................................... 6-26
Trap Disabled Results (FPCR OPERR Bit Cleared)............................... 6-27
Trap Enabled Results (FPCR OPERR Bit Set)....................................... 6-27
Trap Disabled Results (FPCR OVFL Bit Cleared) .................................. 6-29
Trap Enabled Results (FPCR OVFL Bit Set) .......................................... 6-29
Trap Disabled Results (FPCR UNFL Bit Cleared) .................................. 6-31
Trap Enabled Results (FPCR UNFL Bit Set) .......................................... 6-31
Trap Disabled Results (FPCR DZ Bit Cleared)....................................... 6-33
Trap Enabled Results (FPCR DZ Bit Set)............................................... 6-33
Trap Disabled Results (FPCR INEX1 Bit and INEX2 Bit Cleared........... 6-34
Trap Enabled Results (Either FPCR INEX1 Bit or INEX2 Bit Set).......... 6-34
M68060 USER’S MANUAL
Bus Operation
Section 7
Table of Contents
xiii