User manual

ManualsBrandsMotorola ManualsComputer HardwareCME-12D60

Monitor12 (MON12) User Manual 05/30/01

CONTENTS

START-UP ................................................................................................................................................................ 2

MONITOR PROGRAM............................................................................................................................................. 2

INTRODUCTION.................................................................................................................................................. 2

INITIALIZATION ................................................................................................................................................. 3

COMMAND INTERPRETER ................................................................................................................................ 3

I/O ROUTINES...................................................................................................................................................... 4

UTILITY SUBROUTINES..................................................................................................................................... 4

COMMAND TABLE ............................................................................................................................................. 6

INTERRUPT VECTORS........................................................................................................................................ 6

INTERRUPT VECTOR RAM TABLE ............................................................................................................... 7

OPERATING INSTRUCTIONS................................................................................................................................. 8

INTRODUCTION.................................................................................................................................................. 8

RESET SWITCH................................................................................................................................................ 8

LIMITATIONS .................................................................................................................................................. 8

OPERATING PROCEDURES................................................................................................................................ 8

DEBUGGING MODE ........................................................................................................................................ 8

EVALUATION MODE...................................................................................................................................... 9

MONITOR PROGRAM ......................................................................................................................................... 9

COMMAND LINE FORMAT ............................................................................................................................ 9

MONITOR COMMANDS ........................................................................................................................................10

COMMAND TABLE ............................................................................................................................................11

MONITOR COMMAND DESCRIPTIONS...........................................................................................................12

BF - BLOCK FILL MEMORY....................................................................................................................12

BR - BREAKPOINT SET or CLEAR .........................................................................................................12

BULK - BULK ERASE EEPROM................................................................................................................14

CALL - EXECUTE SUBROUTINE .............................................................................................................14

GO - GO EXECUTE PROGRAM................................................................................................................15

? / HELP - DISPLAY MENU.........................................................................................................................15

LOAD - RECEIVE S-RECORD FILE...........................................................................................................16

MD - MEMORY DISPLAY ........................................................................................................................16

MM - MEMORY MODIFY ..........................................................................................................................17

MOVE - MOVE MEMORY CONTENTS......................................................................................................18

P - PROCEED FROM BREAKPOINT .........................................................................................................18

RD - REGISTER DISPLAY ........................................................................................................................19

RM - REGISTER MODIFY .........................................................................................................................19

T - TRACE ...................................................................................................................................................20

TM - TRANSPARENT MODE....................................................................................................................20

VERIFY - VERIFY MEMORY AGAINST S RECORD................................................................................21

DOWNLOADING PROCEDURES...........................................................................................................................22

APPENDIX A: S-RECORD INFORMATION.........................................................................................................23

Summary of content (26 pages)

PAGE 1
Monitor12 (MON12) User Manual 05/30/01 CONTENTS START-UP ................................................................................................................................................................ 2 MONITOR PROGRAM ............................................................................................................................................. 2 INTRODUCTION .....................................................................................................................
PAGE 2
Monitor12 (MON12) User Manual 05/30/01 START-UP Applying power to the EVB causes a Power On Reset (POR) to occur. This POR condition causes the MCU and user I/O port circuitry to be reset, and the monitor invoked. Board COM1 port will display the monitor prompt at 9600 baud, 8,n,1: AXIOM MANUFACTURING CME12D60, PRESS KEY TO START MONITOR… At this state the monitor is waiting to start or launch board support utilities.
PAGE 3
Monitor12 (MON12) User Manual 05/30/01 PROGRAM DESCRIPTION The monitor program supplied for the EVB is called MON12. This program is firmware based and communicates via the HC12 Serial Communications Interface (SCI0) port. User must be aware that the monitor will initialize the hardware to operate this port and that user programs can override proper operation of the port to support the monitor.
PAGE 4
Monitor12 (MON12) User Manual 05/30/01 I/O ROUTINES The I/O section of the main module consists of a set of supervisor routines, and three sets of driver routines. The supervisor routines are INIT, INPUT, and OUTPUT. These routines determine which driver subroutine to call to perform the specific action. Each set of driver routines consists of an initialization routine, an input routine, and an output routine. One set of drivers is for the SCI port and these routines are called ONSCI, INSCI, and OUTSCI.
PAGE 5
Monitor12 (MON12) User Manual 05/30/01 OUTLHLF Convert left nibble of accumulator ‘A’ contents to ASCII and output to terminal port. OUTRHLF Convert right nibble of accumulator ‘A’ contents to ASCII and output to terminal port. OUTA Output accumulator A ASCII character. OUTlBYT Convert binary byte at address in index register X to two ASCII characters and output. Returns address in index register X pointing to next byte.
PAGE 6
Monitor12 (MON12) User Manual 05/30/01 COMMAND TABLE The command table consists of three lines for each entry. The first byte is the number of characters in the command name. The second entry is the ASCII command name. The third entry is the starting address of the command module. As and example: FCB FCC FDB 2 'MM' #MEMORY 2 characters in command name ASCII literal command name string Jump address for command module Each command in the Monitor program is a individual module.
PAGE 7
Monitor12 (MON12) User Manual 05/30/01 INTERRUPT VECTOR RAM TABLE Pseudo Vector Number Or Table Offset 00 02 04 06 08 0A 0C 0E 10 12 14 16 18 1A 1C 1E 20 22 24 26 28 2A 2C 2E 30 32 34 36 38 3A 3C 3E HC12 INTERRUPT VECTOR $FFC0 $FFC2 $FFC4 $FFC6 $FFC8 $FFCA $FFCC $FFCE $FFD0 $FFD2 $FFD4 $FFD6 $FFD8 $FFDA $FFDC $FFDE $FFE0 $FFE2 $FFE4 $FFE6 $FFE8 $FFEA $FFEC $FFEE $FFF0 $FFF2 $FFF4 $FFF6 $FFF8 $FFFA $FFFC $FFFE Vector ID UNUSED VECTOR PLL/ CGM LOCK MSCAN TX MSCAN RX MSCAN ERROR PULSE ACC.
PAGE 8
Monitor12 (MON12) User Manual 05/30/01 OPERATING INSTRUCTIONS INTRODUCTION This chapter provides the necessary information to initialize and operate the EVB in a target system environment. Information consists of the control switch description, operating limitations, command line format, monitor commands, and operating procedures. The operating procedures consist of assembly/disassembly and downloading descriptions and examples. RESET SWITCH The EVB provides a user reset switch.
PAGE 9
Monitor12 (MON12) User Manual 05/30/01 EVALUATION MODE The second mode of operation allows the user to evaluate (emulate) user code in a target system environment utilizing the memory of the MC68HC912 MCU. This is accomplished by relocating the code from RAM memory locations (EVB user RAM) to MCU programmable memory locations (Typically $8000 - $FFFF, see MCU user manual). The MCU internal ram and EEprom are also available to the user in this mode.
PAGE 10
Monitor12 (MON12) User Manual 05/30/01 (4) All input commands can be entered either upper or lower case lettering. All input commands are converted automatically to upper case lettering except for downloading commands sent to the host computer, or when operating in the transparent mode. (5) A maximum of 35 characters may be entered on a command line. After the 36th character is entered, the monitor automatically terminates the command entry and the terminal CRT displays the message "Too Long".
PAGE 11
Monitor12 (MON12) User Manual 05/30/01 COMMAND TABLE COMMAND DESCRIPTION BF Block fill memory with data BR [-] [
]...
PAGE 12
Monitor12 (MON12) User Manual 05/30/01 MONITOR COMMAND DESCRIPTIONS BF - BLOCK FILL MEMORY BF where: Lower limit for fill operation. Upper limit for fill operation. Fill pattern hexadecimal value. The BF command allows the user to repeat a specific byte throughout a memory range. If an invalid address is specified, an invalid address message "rom-xxxx" is displayed. (xxxx = invalid address).
PAGE 13
Monitor12 (MON12) User Manual 05/30/01 The SWI instruction cannot be executed in user code because the monitor program uses the SWI vector. Breakpoints can only be used in RAM memory locations. NOTE: Breakpoints should not be set on branch, jump, JSR, or test and branch instructions. Setting a breakpoint on these types of instructions may prevent the Proceed command from operating correctly. COMMAND FORMATS DESCRIPTION BR Display all current breakpoints. BR
Set breakpoint.
PAGE 14
Monitor12 (MON12) User Manual 05/30/01 >BR E000 Only RAM locations breakpoint. rom-E000 0000 0000 0000 0000 > Invalid Address message. >BR 0205 0207 0209 0211 0213 Maximum of four breakpoints cam be set. Full 0205 0207 0209 0211 > Buffer full message. BULK - BULK ERASE EEPROM The bulk command allows the user to erase all internal MCU EEprom locations. A delay loop is built in such that the erase time is about 10ms when running at 8 MHz E clock.
PAGE 15
Monitor12 (MON12) User Manual GO - 05/30/01 GO EXECUTE PROGRAM where:
is the starting address where user program execution (free run in real time). The user may optionally specify a starting address where execution is to begin. Execution starts at the current program counter (PC) address location, unless a starting address is specified. Program execution continues until a breakpoint us encountered, or the EVB reset switch is activated (pressed).
PAGE 16
Monitor12 (MON12) User Manual LOAD - 05/30/01 RECEIVE S-RECORD FILE The LOAD command receives (downloads) object data in S-record format (see Appendix A) from the host terminal computer to the EVB. As the EVB monitor processes only valid S-record data, it is possible for the monitor to hang up during a load operation. If an S-record starting address points to and invalid memory location, the invalid address message "error addr xxxx" is displayed on the Terminal {xxxx = invalid address).
PAGE 17
Monitor12 (MON12) User Manual 05/30/01 >MD 0200 0220 0200 0210 0220 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF ................. ................. ................. >MD 0230 0220 0230 > FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF MM - ................. MEMORY MODIFY where:
is the memory location at which to start display/modify.
PAGE 18
Monitor12 (MON12) User Manual MOVE - 05/30/01 MOVE MEMORY CONTENTS MOVE [] where: Memory starting address. Memory ending address. [] Destination starting address (optional). The MOVE command allows the user to copy/move memory to new memory location. If the destination is not specified, the block of data residing from address1 to address2 will be moved up one byte. Using the MOVE command on EEPROM locations will program EPROM cells.
PAGE 19
Monitor12 (MON12) User Manual RD - 05/30/01 REGISTER DISPLAY The RD command is used to display the current user MCU core registers (PC, x, y, a, b, c, sp). EXAMPLE DESCRIPTION >RD P-0200 Y-798 X-FF00 A-44 B-70 C-C0 S-0054 Display registers > RM - REGISTER MODIFY RM [p, y, x, a, b, c, s] The RM command is used to modify the MCU program counter (P), Y index (Y), X index (X), A accumulator (A), B accumulator (B), C accumulator (C), and stack pointer (S) register contents.
PAGE 20
Monitor12 (MON12) User Manual T - 05/30/01 TRACE T [] where: is the number (in hexadecimal, $1-FF max.) of instructions to execute. The T command allows the user to monitor program execution on an instruction-byinstruction basis. The user may optionally execute several instructions at a time by entering a count value (up to $FF). Execution starts at the current program counter (PC). The PC display with the event message is of the next instruction to be executed.
PAGE 21
Monitor12 (MON12) User Manual >TM 05/30/01 Enter transparent mode. . . . (CTRL)A > Host computer input Task completed. Enter exit command. Exit transparent mode. Refer to the downloading procedures at the end of this chapter for additional information pertaining to the use of the TM command. VERIFY - VERIFY MEMORY AGAINST S RECORD The VERIFY command is similar to the LOAD command except that the VERIFY command instructs the EVB to compare the downloaded S-record data to the data stored in memory.
PAGE 22
Monitor12 (MON12) User Manual 05/30/01 DOWNLOADING PROCEDURES This portion of text describes the downloading procedures. The downloading operation enables the user to transfer information from a host computer to the EVB (or target system memory) using the LOAD command. The VERIFY command is used to compare the S-record data to memory data. Specific downloading procedures are described enabling the user to IBM Personal Computer (PC) host computer system.
PAGE 23
Monitor12 (MON12) User Manual 05/30/01 APPENDIX A: S-RECORD INFORMATION INTRODUCTION The Motorola S-record format was devised for the purpose of encoding programs (object code) or data files in a printable format for transportation between computer systems. This transportation process can therefore be monitored and the S-records can be easily edited.
PAGE 24
Monitor12 (MON12) User Manual 05/30/01 S-RECORD TYPES Eight types of S-records have been defined to accommodate the several needs of the encoding, transportation, and decoding functions. The various Motorola upload, download, and other record transportation control programs, as well as cross assemblers, linkers, and other file creating or debugging programs, utilize only those S-records which serve the purpose of the program.
PAGE 25
Monitor12 (MON12) User Manual 05/30/01 S9030000FC The above format consists of an S0 header record, four S1 code/data records, and an S9 termination record. The S0 header record is comprised of the following character pairs: S0 S-record type S0, indicating a header record. 06 Hexadecimal 06 (decimal 06), indicating six character pairs (or ASCII bytes) follow. 0000 Four-character 2-byte address field, zeroes. 48 44 52 ASCII H, D, and R - "HDR". 1B Checksum of SO record.
PAGE 26
Monitor12 (MON12) User Manual 05/30/01 S9 S-record type S9, indicating a termination record. 03 Hexadecimal 03, indicating three character pairs (3 bytes) follow. 00 00 Four-character 2-byte address field, zeroes. FC Checksum of S9 record. Each printable character in an S-record is encoded in hexadecimal (ASCII in this example) representation of the binary bits which are actually transmitted. For example, the first S1 record above is sent as shown below.