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MOTOROLA M68000 FAMILY Programmer's Reference ... - Freescale

MOTOROLA M68000 FAMILY Programmer's Reference ... - Freescale

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Figure<br />

Number<br />

<strong>MOTOROLA</strong><br />

LIST OF FIGURES<br />

Title<br />

<strong>M68000</strong> <strong>FAMILY</strong> PROGRAMMER’S REFERENCE MANUAL<br />

Page<br />

Number<br />

1-1 <strong>M68000</strong> Family User Programming Model....................................................... 1-2<br />

1-2 <strong>M68000</strong> Family Floating-Point Unit User Programming Model........................ 1-4<br />

1-3 Floating-Point Control Register........................................................................ 1-5<br />

1-4 FPSR Condition Code Byte.............................................................................. 1-6<br />

1-5 FPSR Quotient Code Byte ............................................................................... 1-6<br />

1-6 FPSR Exception Status Byte ........................................................................... 1-6<br />

1-7 FPSR Accrued Exception Byte ........................................................................ 1-7<br />

1-8 Status Register............................................................................................... 1-11<br />

1-9 MC68030 Transparent Translation/MC68EC030 Access<br />

Control Register Format................................................................................. 1-12<br />

1-10 MC68040 and MC68LC040 Transparent Translation/MC68EC040<br />

Access Control Register Format .................................................................... 1-13<br />

1-11 Packed Decimal Real Format ........................................................................ 1-16<br />

1-12 Binary Floating-Point Data Formats............................................................... 1-16<br />

1-13 Normalized Number Format........................................................................... 1-18<br />

1-14 Denormalized Number Format....................................................................... 1-18<br />

1-15 Zero Format ................................................................................................... 1-19<br />

1-16 Infinity Format ................................................................................................ 1-19<br />

1-17 Not-A-Number Format.................................................................................... 1-19<br />

1-19 Organization of Integer Data Formats in Address Registers.......................... 1-26<br />

1-18 Organization of Integer Data Formats in Data Registers ............................... 1-26<br />

1-20 Memory Operand Addressing ........................................................................ 1-27<br />

1-21 Memory Organization for Integer Operands................................................... 1-29<br />

1-22 Organization of FPU Data Formats in Memory.............................................. 1-30<br />

2-1 Instruction Word General Format..................................................................... 2-1<br />

2-2 Instruction Word Specification Formats ........................................................... 2-2<br />

2-3 <strong>M68000</strong> Family Brief Extension Word Formats.............................................. 2-21<br />

2-4 Addressing Array Items.................................................................................. 2-23<br />

2-5 No Memory Indirect Action............................................................................. 2-24<br />

2-6 Memory Indirect with Preindex....................................................................... 2-26<br />

2-7 Memory Indirect with Postindex .................................................................... 2-27<br />

2-8 Memory Indirect with Index Suppress........................................................... 2-27<br />

3-1 Intermediate Result Format............................................................................ 3-24<br />

3-2 Rounding Algorithm Flowchart....................................................................... 3-26<br />

3-3 Instruction Description Format ....................................................................... 3-33<br />

B-1 MC68000 Group 1 and 2 Exception Stack Frame ...........................................B-3<br />

B-2 MC68000 Bus or Address Error Exception Stack Frame.................................B-3<br />

B-3 Four-Word Stack Frame, Format $0 ................................................................B-3<br />

B-4 Throwaway Four-Word Stack Frame, Format $1.............................................B-3<br />

ix

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