User manual
Table Of Contents
- COVER
- TABLE OF CONTENTS
- CHAPTER 1 GENERAL INFORMATION
- CHAPTER 2 DEBUG MONITOR DESCRIPTION
- CHAPTER 3 DEBUG MONITOR COMMANDS
- CHAPTER 4 ASSEMBLER/DISASSEMBLER
- CHAPTER 5 SYSTEM CALLS
- CHAPTER 6 DIAGNOSTIC FIRMWARE GUIDE
- APPENDIX A S-RECORD INFORMATION
- APPENDIX B SELF-TEST ERROR MESSAGES
- APPENDIX C USER CUSTOMIZATION
- LIST OF FIGURES
- LIST OF TABLES
- Table 2-1. Debugger Address Parameter Format
- Table 2-2. CPU32Bug Exception Vectors
- Table 3-1. Debug Monitor Commands
- Table 4-1. CPU32Bug Assembler Addressing Modes
- Table 5-1. CPU32Bug System Call Routines
- Table 6-1. MCU CPU Diagnostic Tests
- Table 6-2. Memory Diagnostic Tests
- Table B-1. Self-Test Error Messages
- Table C-1. CPU32Bug Customization Area
- Table C-2. MCU SCI Communication Formats
- Table C-3. Rev. A Chip Selection Summary
- Table C-4. Rev. B Chip Selection Summary
- Table C-5. BCC Rev. C Chip Selection Summary
- Table C-6. PFB Rev. C Compatibility
- CHAPTER 1 GENERAL INFORMATION
- CHAPTER 2 DEBUG MONITOR DESCRIPTION
- CHAPTER 3 DEBUG MONITOR COMMANDS
- 3.1 INTRODUCTION
- 3.2 BLOCK OF MEMORY COMPARE
- 3.3 BLOCK OF MEMORY FILL
- 3.4 BLOCK OF MEMORY MOVE
- 3.5 BREAKPOINT INSERT/DELETE
- 3.6 BLOCK OF MEMORY SEARCH
- 3.7 BLOCK OF MEMORY VERIFY
- 3.8 DATA CONVERSION
- 3.9 DUMP S-RECORDS
- 3.10 GO DIRECT (IGNORE BREAKPOINTS)
- 3.11 GO TO NEXT INSTRUCTION
- 3.12 GO EXECUTE USER PROGRAM
- 3.13 GO TO TEMPORARY BREAKPOINT
- 3.14 HELP
- 3.15 LOAD S-RECORDS FROM HOST
- 3.16 MACRO DEFINE/DISPLAY/DELETE
- 3.17 MACRO EDIT
- 3.18 MACRO EXPANSION LISTING ENABLE/DISABLE
- 3.19 MEMORY DISPLAY
- 3.20 MEMORY MODIFY
- 3.21 MEMORY SET
- 3.22 OFFSET REGISTERS DISPLAY/MODIFY
- 3.23 PRINTER ATTACH/DETACH
- 3.24 PORT FORMAT
- 3.25 REGISTER DISPLAY
- 3.26 COLD/WARM RESET
- 3.27 REGISTER MODIFY
- 3.28 REGISTER SET
- 3.29 SWITCH DIRECTORIES
- 3.30 TRACE
- 3.31 TRACE ON CHANGE OF CONTROL FLOW
- 3.32 TRANSPARENT MODE
- 3.33 TRACE TO TEMPORARY BREAKPOINT
- 3.34 VERIFY S-RECORDS AGAINST MEMORY
- CHAPTER 4 ASSEMBLER/DISASSEMBLER
- CHAPTER 5 SYSTEM CALLS
- 5.1 INTRODUCTION
- 5.2 SYSTEM CALL ROUTINES
- 5.2.1 Calculate BCD Equivalent Specified Binary Number
- 5.2.2 Parse Value, Assign to Variable
- 5.2.3 Check for Break
- 5.2.4 Timer Delay Function
- 5.2.5 Unsigned 32 x 32 Bit Divide
- 5.2.6 Erase Line
- 5.2.7 Input Character Routine
- 5.2.8 Input Line Routine
- 5.2.9 Input Serial Port Status
- 5.2.10 Unsigned 32 x 32 Bit Multiply
- 5.2.11 Output Character Routine
- 5.2.12 Output String Using Pointers
- 5.2.13 Print Carriage Return and Line Feed
- 5.2.14 Read Line to Fixed-Length Buffer
- 5.2.15 Read String Into Variable-Length Buffer
- 5.2.16 Return to CPU32Bug
- 5.2.17 Send Break
- 5.2.18 Compare Two Strings
- 5.2.19 Timer Initialization
- 5.2.20 Read Timer
- 5.2.21 Start Timer at T=0
- 5.2.22 Output String with Data
- 5.2.23 Output String Using Character Count
- CHAPTER 6 DIAGNOSTIC FIRMWARE GUIDE
- 6.1 INTRODUCTION
- 6.2 DIAGNOSTIC MONITOR
- 6.2.1 Monitor Start-Up
- 6.2.2 Command Entry and Directories
- 6.2.3 Help (HE)
- 6.2.4 Self Test (ST)
- 6.2.5 Switch Directories (SD)
- 6.2.6 Loop-On-Error Mode (LE)
- 6.2.7 Stop-On-Error Mode (SE)
- 6.2.8 Loop-Continue Mode (LC)
- 6.2.9 Non-Verbose Mode (NV)
- 6.2.10 Display Error Counters (DE)
- 6.2.11 Clear (Zero) Error Counters (ZE)
- 6.2.12 Display Pass Count (DP)
- 6.2.13 Zero Pass Count (ZP)
- 6.3 UTILITIES
- 6.4 CPU TESTS FOR THE MCU
- 6.5 MEMORY TESTS (MT)
- 6.6 BUS ERROR TEST
- APPENDIX A S-RECORD INFORMATION
- APPENDIX B SELF-TEST ERROR MESSAGES
- APPENDIX C USER CUSTOMIZATION
SYSTEM CALLS
M68CPU32BUG/D REV 1 5-6
.CHANGEV Parse Value, Assign to Variable .CHANGEV
If the above code was called with a syscall routine and BUFFER contained ’’1 3’’ in pointer/count
format and POINT contained 2 (longwords), then COUNT would be assigned the value 3, and
POINT would contain 4 (pointing to first character past 3). Note that POINT is the offset of the
buffer start address (not the address of the first character in the buffer) to the next character to
process. In this case, a value of 2 in POINT indicates that the space between 1 and 3 is the next
character to be processed. After calling .CHANGEV, the screen displays:
COUNT = 3
If the above code was called again, nothing could be parsed from BUFFER, so a prompt would
be issued. For example, if the string 5 is entered in response to the prompt.
COUNT = 3? 5<CR>
COUNT = 5
If in the previous example nothing had been entered at the prompt, COUNT would retain its prior
value.
COUNT = 3? <CR>
COUNT = 3
SYSTEM CALLS
M68CPU32BUG/D REV 1 5-3
Table 5-1. CPU32Bug System Call Routines
Function Trap Code Description
.BINDEC $0064 Convert binary to Binary Coded Decimal (BCD)
.CHANGEV $0067 Parse value
.CHKBRK $0005 Check for break
.DELAY $0043 Timer delay function
.DIVU32 $006A Divide two 32-bit unsigned integers
.ERASLN $0027 Erase line
.INCHR $0000 Input character
.INLN $0002 Input line (pointer/pointer format)
.INSTAT $0001 Input serial port status
.MULU32 $0069 Multiply two 32-bit unsigned integers
.OUTCHR $0020 Output character
.OUTLN $0022 Output line (pointer/pointer format)
.OUTSTR $0021 Output string (pointer/pointer format)
.PCRLF $0026 Output carriage return and line feed
.READLN $0004 Input line (pointer/count format)
.READSTR $0003 Input string (pointer/count format)
.RETURN $0063 Return to CPU32Bug
.SNDBRK $0029 Send break
.STRCMP $0068 Compare two strings (pointer/count format)
.TM_INI $0040 Timer initialization
.TM_RD $0042 Read timer
.TM_STR0 $0041 Start timer at T=0
.WRITD $0028 Output string with data (pointer/count format)
.WRITDLN $0025 Output line with data (pointer/count format)
.WRITE $0023 Output string (pointer/count format)
.WRITELN $0024 Output line (pointer/count format)
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eescale S
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