Motorola CPU32 Reference Manual page 6

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6.2.5 Software Breakpoints ........................................................................ 6-8
6.2.6 Hardware Breakpoints ....................................................................... 6-8
6.2.7 Format Error ...................................................................................... 6-9
6.2.8 Illegal or Unimplemented Instructions ............................................... 6-9
6.2.9 Privilege Violations .......................................................................... 6-10
6.2.10 Tracing ............................................................................................ 6-11
6.2.11 Interrupts .........................................................................................6-12
6.2.12 Return from Exception ..................................................................... 6-13
6.3 Fault Recovery ........................................................................................ 6-14
6.3.1 Types of Faults ................................................................................6-16
6.3.1.1 Type I: Released Write Faults ................................................. 6-16
6.3.1.2 Type II: Prefetch, Operand, RMW, and MOVEP Faults .......... 6-17
6.3.1.3 Type III: Faults During MOVEM Operand Transfer ................. 6-17
6.3.1.4 Type IV: Faults During Exception Processing .........................6-18
6.3.2 Correcting a Fault ............................................................................ 6-18
6.3.2.1 (Type I) Completing Released Writes via Software ................ 6-19
6.3.2.2 (Type I) Completing Released Writes via RTE ....................... 6-19
6.3.2.3 (Type II) Correcting Faults via RTE ......................................... 6-19
6.3.2.4 (Type III) Correcting Faults via Software .................................6-20
6.3.2.5 (Type III) Correcting Faults By Conversion and Restart ......... 6-20
6.3.2.6 (Type III) Correcting Faults via RTE ........................................ 6-21
6.3.2.7 (Type IV) Correcting Faults via Software ................................ 6-21
6.4 CPU32 Stack Frames .............................................................................. 6-21
6.4.1 Normal Four-Word Stack Frame .....................................................6-22
6.4.2 Normal Six-Word Stack Frame ........................................................ 6-22
6.4.3 BERR Stack Frame ......................................................................... 6-22
7.1 CPU32 Integrated Development Support .................................................. 7-1
7.1.1 Background Debug Mode (BDM) Overview ...................................... 7-1
7.1.2 Deterministic Opcode Tracking Overview ......................................... 7-2
7.1.3 On-Chip Hardware Breakpoint Overview .......................................... 7-3
7.2 Background Debug Mode (BDM) .............................................................. 7-3
7.2.1 Enabling BDM ...................................................................................7-4
7.2.2 BDM Sources .................................................................................... 7-4
7.2.2.1 External BKPT Signal ................................................................7-4
7.2.2.2 BGND Instruction ...................................................................... 7-4
7.2.2.3 Double Bus Fault ....................................................................... 7-5
7.2.2.4 Peripheral Breakpoints .............................................................. 7-5
7.2.3 Entering BDM .................................................................................... 7-5
MOTOROLA
vi
TABLE OF CONTENTS
(Continued)
Title
SECTION 7
DEVELOPMENT SUPPORT
Page
CPU32
REFERENCE MANUAL