4
After initialization, the terminal will display:
Hard Reset
Installed SRAM: 256K
Copyright 1995-1996 Motorola, Inc. All Rights Reserved.
ColdFire MCF5204 EVS Debugger V2.1 (Aug xx 1996 xx:xx:xx:)
Enter ‘help’ for help.
dBUG>
If you did not get this response check the setup. Refer to Section 1.10. Note, the date
‘
Aug xx 1996 xx:xx:xx’
may vary in different revisions.
Other means can be used to re-initialize the SBC5204 Computer Board firmware. These means are
discussed in the following paragraphs.
2.2.2.1 RESET Button.
RESET is the red button located in the middle side of the board. Depressing this
button causes all processes to terminate, resets the MCF5204 processor and board logic’s and restarts the
dBUG firmware. Pressing the RESET button would be the appropriate action if all else fails.
2.2.2.2 ABORT Button.
ABORT is the black button located next to RESET button in the middle side of
the board. The abort function causes an interrupt of the present processing (a level 7 interrupt on
MCF5204) and gives control to the dBUG firmware. This action differs from RESET in that no processor
register or memory contents are changed, the processor and peripherals are not reset, and dBUG is not
restarted. Also, in response to depressing the ABORT button, the contents of the MCF5204 core internal
registers are displayed.
The abort function is most appropriate when software is being debugged. The user can interrupt the
processor without destroying the present state of the system.
2.2.2.3 Software Reset Command.
dBUG does have a command that causes the dBUG to restart as if a
hardware reset was invoked. The command is "RESET".
2.2.2.4 USER Program.
The user can return control of the system to the firmware by recalling dBUG via
his/her program. Instructions can be inserted into the user program to call dBUG via the TRAP 15
handler.
2.2.3 System Operation
After system initialization, the terminal will display:
Hard Reset
Installed SRAM: 256K
Copyright 1995-1996 Motorola, Inc. All Rights Reserved.
ColdFire MCF5204 EVS Debugger V2.1 (Aug xx 1996 xx:xx:xx:)
Enter ‘help’ for help.
dBUG>
