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DIAGNOSTIC FIRMWARE GUIDE
M68CPU32BUG/D REV 1 6-6
CPU CPU Tests For The MCU CPU
6.4 CPU TESTS FOR THE MCU
CPU tests are a series of diagnostics used to test the CPU portion of the BCC MCU, as listed
below (Table 6-1).
Table 6-1. MCU CPU Diagnostic Tests
Monitor Command Title
CPU A Register Test
CPU B Instruction Test
CPU C Address Mode Test
CPU D Exception Processing Test
The normal procedure for correcting a CPU error is to replace the MCU micro-controller unit.
DIAGNOSTIC FIRMWARE GUIDE
M68CPU32BUG/D REV 1 6-7
CPU A Register Test CPU A
6.4.1 Register Test
CPU32Diag>CPU A
CPU A executes a thorough test of all the registers in the MCU device, including checking for
bits stuck high or low.
EXAMPLE
After the command has been issued, the following line is printed:
A CPU Register test..................Running ---------->
If any part of the test fails, then the display appears as follows.
A CPU Register test..................Running ---------->..... FAILED
(error message)
Here, (error message) is one of the following:
Failed DO-D7 register check
Failed SR register check
Failed USP/VBR/CAAR register check
Failed CACR register check
Failed AO-A4 register check
Failed A5-A7 register check
If all parts of the test are completed correctly, then the test passes.
A CPU Register test..................Running ----------> PASSED
Fr
eescale S
emiconduct
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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- M68CPU32BUG DEBUG MONITOR 1
- USER’S MANUAL 1
- M68CPU32BUG/D 1
- TABLE OF CONTENTS 2
- LIST OF FIGURES 3
- LIST OF TABLES 3
- 1.5 SYSTEM RESTART 5
- CHAPTER 1 5
- GENERAL INFORMATION 5
- 1.1 INTRODUCTION 5
- 1.2 GENERAL DESCRIPTION 5
- 1.3 USING THIS MANUAL 6
- 1.6 MEMORY REQUIREMENTS 7
- CHAPTER 2 9
- DEBUG MONITOR DESCRIPTION 9
- 2.1 INTRODUCTION 9
- Freescale Semiconductor, Inc 10
- 2.6 FUNCTION CODE SUPPORT 13
- CHAPTER 3 16
- DEBUG MONITOR COMMANDS 16
- 3.1 INTRODUCTION 16
- BC Block of Memory Compare BC 17
- BF Block of Memory Fill BF 17
- BS Block of Memory Search BS 19
- BM Block of Memory Move BM 19
- BR Breakpoint Insert BR 20
- BV Block of Memory Verify BV 21
- DU Dump S-Records DU 23
- DC Data Conversion DC 23
- GN Go To Next Instruction GN 25
- GO Go Execute User Program GO 27
- HE Help HE 29
- MA Macro Define/Display MA 31
- MAE Macro Edit MAE 33
- MM Memory Modify MM 35
- MD Memory Display MD 36
- MS Memory Set MS 38
- PF Port Format PF 39
- PA Printer Attached PA 40
- RD Register Display RD 41
- RS Register Set RS 43
- RESET Cold/Warm Reset RESET 44
- RM Register Modify RM 44
- T Trace T 45
- SD Switch Directories SD 45
- TM Transparent Mode TM 48
- 4.2SOURCE PROGRAM CODING 51
- CHAPTER 4 52
- ASSEMBLER/DISASSEMBLER 52
- 4.1 INTRODUCTION 52
- 5.2 SYSTEM CALL ROUTINES 57
- CHAPTER 5 58
- SYSTEM CALLS 58
- 5.1 INTRODUCTION 58
- .ERASLN Erase Line .ERASLN 61
- .OUTSTR .OUTSTR 66
- .SNDBRK Send Break .SNDBRK 68
- .TM_RD Read Timer .TM_RD 70
- .WRITELN .WRITELN 71
- .WRITDLN .WRITDLN 71
- 6.3 UTILITIES 73
- CHAPTER 6 73
- DIAGNOSTIC FIRMWARE GUIDE 73
- 6.1 INTRODUCTION 73
- 6.2 DIAGNOSTIC MONITOR 73
- CPU B Instruction Test CPU B 75
- CPU CPU Tests For The MCU CPU 76
- CPU A Register Test CPU A 76
- CPU C Address Mode Test CPU C 77
- MT Memory Tests MT 78
- MT D Set Bus Data Width MT D 79
- MT A Set Function Code MT A 79
- MT B Set Start Address MT B 80
- MT C Set Stop Address MT C 80
- MT H Random Byte Test MT H 81
- MT E March Address Test MT E 81
- MT F Walk a Bit Test MT F 82
- MT G Refresh Test MT G 82
- MT I Program Test MT I 83
- MT J Test and Set Test MT J 84
- BERR Bus Error Test BERR 84
- APPENDIX A 85
- S-RECORD INFORMATION 85
- A.1 INTRODUCTION 85
- A.2 S-RECORD CONTENT 85
- A.3 S-RECORD TYPES 86
- A.4 S-RECORDS CREATION 86
- C.2 CPU32BUG CUSTOMIZATION 87
- APPENDIX B 87
- SELF-TEST ERROR MESSAGES 87
- B.1 INTRODUCTION 87
- APPENDIX C 88
- USER CUSTOMIZATION 88
- C.1 INTRODUCTION 88
- C.3 CUSTOMIZATION TABLE 90
- C.4 COMMUNICATION FORMATS 93
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