Motorola M68CPU32BUG User Manual Page 67
- Page / 98
- Table of contents
- BOOKMARKS
Rated. / 5. Based on customer reviews
SYSTEM CALLS
M68CPU32BUG/D REV 1 5-22
.STRCMP Compare Two Strings .STRCMP
5.2.18 Compare Two Strings
SYSCALL .STRCMP
TRAP CODE: $0068
An equality comparison is made and a boolean flag is returned to the caller. If the strings are not
identical the flag is $00, otherwise it is $FF.
Entry Conditions:
SP ==> Address of string#1
Address of string#2
Three bytes (unused)
Byte to receive string comparison result
Exit Conditions:
SP ==> Three bytes (unused)
Byte that received string comparison result
EXAMPLE
If A1 and A2 contain the addresses of the two strings.
SUBQ.L #4,A7
Allocate longword to receive result
PEA (A1)
Push address of one string
PEA (A2)
Push address of the other string
SYSCALL .STRCMP
Compare the strings
MOVE.L (A7)+,D0
Pop boolean flag into data register
TST.B D0 Check boolean flag
BNE ARE SAME Branch if strings are identical
SYSTEM CALLS
M68CPU32BUG/D REV 1 5-19
.READSTR Read String Into Variable-Length Buffer .READSTR
5.2.15 Read String Into Variable-Length Buffer
SYSCALL .READSTR
TRAP CODE: $0003
Reads a string of characters from the default input port into a buffer. The first byte in the buffer
defines the maximum number of characters that can be written to the buffer. The buffer’s size
should be no less than the first byte + 2. The maximum number of characters written to a buffer
is 254 characters, making the maximum buffer size 256. On exit, the count byte defines the
number of characters in the buffer. Enter a carriage return (<CR>) and line feed (<LF>) to
terminate the input. The characters echo to the default output port. <CR> is not echoed.
Entry Conditions:
SP ==> Address of input buffer <long>
Exit Conditions:
SP ==> Top of stack
The count byte containing the number of bytes in the buffer.
EXAMPLE
If A0 contains the string buffer address;
PEA (A0)
Push buffer address
TRAP #15
(May also invoke by SYSCALL
DC.W 3
macro (’’SYSCALL .READSTR’’)
NOTE
This routine allows the caller to define the maximum character
input length (254 characters). If more than 254 characters are
entered, then the buffer input is truncated. See Terminal
Input/Output Control character processing as described in Chapter
1.
Fr
eescale S
emiconduct
or
, I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
nc...
- 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
Related products and manuals for TVs & monitors Motorola M68CPU32BUG
(14 pages)© 2020, manymanuals.com. All rights reserved. | 3.387 s |
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Comments to this Manuals