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DEBUG MONITOR COMMANDS
M68CPU32BUG/D REV 1 3-22
GN Go To Next Instruction GN
Use the GN command to trace through the subroutine call and display the results.
CPU32Bug>GN<CR>
Effective address: 00006008
Tempory breakpoint at $6004.
Effective address: 00006004 Current PC at $6000.
At Breakpoint
PC =00006008 SR =2700=TR:OFF_S_7_..... VBR =00000000
SFC =0=F0 DFC =0=F0 USP =00003830 SSP* =00010000
D0 =00000004 D1 =00000001 D2 =00000000 D3 =00000000
D4 =00000000 D5 =00000000 D6 =00000000 D7 =00000000
A0 =00000000 A1 =00000000 A2 =00000000 A3 =00000000
A4 =00000000 A5 =00000000 A6 =00000000 A7 =00010000
00006008 2600 MOVE.L D0,D3
CPU32Bug>
DEBUG MONITOR COMMANDS
M68CPU32BUG/D REV 1 3-19
GD Go Direct (Ignore Breakpoints) GD
3.10 GO DIRECT (IGNORE BREAKPOINTS)
GD [<addr>]
Use the GD command to start target code execution. If an address is specified, it is placed in the
target PC. Execution starts at the target PC address. Under the GD command no breakpoints are
inserted.
Once execution of target code begins, control is returned to CPU32Bug by various conditions:
• Press the ABORT switch or RESET switch of the M68300PFB Platform Board
• Execute the .RETURN TRAP #15 function
• Generation of an unexpected exception
EXAMPLE The following program resides at $4000.
CPU32Bug>MD 4000;DI<CR>
00004000 2200 MOVE.L D0,D1
00004002 4282 CLR.L D2
00004004 D401 ADD.B D1,D2
00004006 E289 LSR.L #$1,D1
00004008 66FA BNE.B $4004
0000400A E20A LSR.B #$1,D2
0000400C 55C2 SCS.B D2
0000400E 60FE BRA.B $400E
CPU32Bug>RM D0<CR>
Initialize D0 and start target program:
D0 =00000000 ? 52A9C.<CR>
CPU32Bug>GD 4000<CR>
Effective address: 00004000
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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