Example Of Manipulating Variables; Monitoring And Manipulating Memory - Fujitsu MB2147-01 Application Note

To manipulate the value just double-click on the entry and enter in the pop-up window Edit variable a new value.
The radix can be chosen via "D'", "H'", "B'", or "O'".
5.3.1

Example of Manipulating Variables

The following example shows how to intervene in a program.
First use the example C code "Main.c" from above and enter debugging mode. Open "Main.c" in Mix display
mode. Now set a break point at the beginning of the loop in the function wait.
=>( )000C019E: 1704
=>( )000C01A0: 1781
=>( )000C01A2: 0F01
=>(X)000C01A4: C000
=>( )000C01A6: 9B3CC000
=>( )000C01AA: 14C0
=>( )000C01AC: 9B3CC000
000C01B0: 04C0
Now start execution and the debugger will halt on the break point. Next, display variable a, (argument of function
wait).
The value of a should be H'4E200000. Change a to 1 by double clicking to its entry in the watch window.
If you now use step-in for several times, you will note, that the loop is only executed one time, because the
counter i has reached the count of 1 of the comparison argument a.
5.4

Monitoring and Manipulating Memory

To display the MCU memory choose in the debugging mode: ViewMemory. A pop-up window Watch will occur
and ask for the start address to be displayed. Type a hexadecimal number (with leading H') and press
<RETURN>.
A new window occurs which is something like a "Hex-Editor":
To change a memory content just double click on the respecting byte and a new dialog window pops up. In this
window you can specify the address (default is the address of the clicked byte) and the new value. The value can
be entered in hexadecimal, decimal, binary or octal format.
FR Family MB2198-01 Emulating and Debugging Installation Guide, Doc. No. 002-05223 Rev. *A
16: void wait(unsigned int a)
17: {
18: for (i=0; i<a; i++);
LD
ST R4,@-R15
ST RP,@-R15
ENTER #004
LDI:8 #00,R0
LDI:20 #3C000,R12
ST R0,@R12
LDI:20 #3C000,R12
@R12,R0
Monitoring and Manipulating
18